The brightness of every room made his sensitive eyes squint.

The brightness of every room made his sensitive eyes squint.

The emerging brightness of the new day, while inviting, did nothing to sort out the tangle of thoughts crowding his brain like the line of a snarled fishing reel.

The brightness of the morning was magical.

353), with which he measured the relative brightness of 2784 stars between the North Pole and about - so declination.

She blinked, blinded by the brightness of the morning sun streaming into the catacombs.

The sudden brightness blinded her, and she shielded her eyes.

It was still his, a place for him to escape Ingrid and the brightness of his condo.

It was still his, a place for him to escape Ingrid and the brightness of his condo.

" As the little water-drop poured into a large measure of wine seems to lose its own nature entirely and to take on both the taste and the colour of the wine; or as iron heated red-hot loses its own appearance and glows like fire; or as air filled with sunlight is transformed into the same brightness so that it does not so much appear to be illuminated as to be itself light - so must all human feeling towards the Holy One be self-dissolved in unspeakable wise, and wholly transfused into the will of God.

Stars whose brightness fluctuates are called variable stars.

He returned to the glaring brightness of the condo.

I hope your Christmas Day will be a very happy one and that the New Year will be full of brightness and joy for you and every one.

Of course, he had not gone far when he noticed the brightness of the leaves, and he quickly guessed the cause when he saw the broken jars from which the treasure was still dropping.

There, standing sil­houetted in the brightness behind him stood the pride of the FBI, Jonathan Winston.

She blinked back the flood of brightness and covered her eyes as she slumped back on the sofa.

" Thus the magnitude of the central spot is diminished, and the brightness of the rings increased, by covering the central parts of the object-glass."

He cast his eyes downward, away from the brightness, and saw little except the ground in front of him.

His fine eyes lit up with a thoughtful, kindly, and unaccustomed brightness, but he was looking not at his sister but over her head toward the darkness of the open doorway.

Such a brightness on the face like the light of heaven, and from the blessed Mother's cheek it drops and drops....

The sun knows that you like to see the world covered with beautiful white snow and so he kept back all his brightness, and let the little crystals form in the sky.

or -2/37r:1; so that the brightness in this direction is 4/91r 2 of the maximum at 0=0.

Red lead or triplumbic tetroxide, Pb304, is a scarlet crystalline powder of specific gravity 8.6-9.1, obtained by roasting very finely divided pure massicot or lead carbonate; the brightness of the colour depends in a great measure on the roasting.

Of course, he soon noticed the brightness of the leaves, and discovered the cause, too, when he caught sight of the broken jars and vases from which the melted treasure was still dropping.

Perhaps the best data for a comparison are those afforded by the varying brightness of stars at different altitudes.

I can almost think I see you with your father and mother and little sister, with all the brightness of the beautiful country about you, and it makes me very glad to know how glad you are.

Let us now consider the distribution of brightness in the image of a double line whose components are of equal strength, and at such an angular interval that the central line in the image of one coincides with the first zero of brightness in the image of the other.

But, as will be evident, the bright bands bordering the central band are now not inferior to it in brightness; in fact, a band similar to the central band is reproduced an indefinite number of times, so long as there is no sensible discrepancy of phase in the secondary waves proceeding from the various parts of the same slit.

Early in May, the oaks, hickories, maples, and other trees, just putting out amidst the pine woods around the pond, imparted a brightness like sunshine to the landscape, especially in cloudy days, as if the sun were breaking through mists and shining faintly on the hillsides here and there.

vii., where wisdom, the brightness of the everlasting light, is the source of all that is noblest in human life.

3 the curve of brightness for one component is ABC, and for the other OA'C'; and the curve representing half the combined brightnesses is E'BE.

The brightness (corresponding to B) midway between the two central points AA' is 8106 of the brightness at the central points themselves.

If the angular interval between the components of a double line be half as great again as that supposed in the figure, the brightness midway between is 1802 as against 1.0450 at the central lines of each image.

3 the curve of brightness for one component is ABC, and for the other OA'C'; and the curve representing half the combined brightnesses is E'BE.

At Jan Mayen (8) in 1882-1883 a scale was employed running from 1, taken as corresponding to the brightness of the milky way, to 4, corresponding to full moonlight.

It is, however, not a mere coincidence that the two great kabbalistic text-books, the Bahir and the Zohar (both meaning "brightness"), appear first in the 13th century.

In the Avesta, after the separation of the Iranian stock from the Hindu and the rise of Zoroastrianism, which elevated Ormazd to the summit of the Persian theological system, his role was more distinct, though less important; between Ormazd, who reigned in eternal brightness, and Ahriman, whose realm was eternal darkness, he occupied an intermediate position as the greatest of the yazatas, beings created by Ormazd to aid in the destruction of evil and the administration of the world.

But its brightness was far from comparing with the glorious accounts of its former apparitions.

In the Avesta, after the separation of the Iranian stock from the Hindu and the rise of Zoroastrianism, which elevated Ormazd to the summit of the Persian theological system, his role was more distinct, though less important; between Ormazd, who reigned in eternal brightness, and Ahriman, whose realm was eternal darkness, he occupied an intermediate position as the greatest of the yazatas, beings created by Ormazd to aid in the destruction of evil and the administration of the world.

If the aperture be increased, not only is the total brightness over the focal plane increased with it, but there is also a concentration of the diffraction pattern.

The greatest brightness is at the centre, where dC = 27rp d p, C = 7rR2.

He jumped to his feet flipping light switches and stumbling through both rooms, barely seeing still-sleeping Cynthia through eyes pinched nearly closed against the intrusive brightness.

He retreated toward the bathroom just as the door opened—and just as Dean hit the light switch and rolled to the floor, flooding the room in brightness.

She made her way back and circled the screaming pillar, shielding her eyes against its brightness.

At Hilden's silence, Taran opened his eyes, irritated by the brightness.

They emerged into the morning sun, and Xander shielded his delicate eyes from the brightness.

a man-like form (Yahweh) surrounded by a rainbow brightness.

When light proceeding from a small source falls upon an opaque object, a shadow is cast upon a screen situated behind the obstacle, and this shadow is found to be bordered by alternations of brightness and darkness, known as " diffraction bands."

An interesting exception to the general rule that full brightness requires the existence of the first zone occurs when the obstacle assumes the form of a small circular disk parallel to the plane of the incident waves.

Within the rectangle formed by pairs of consecutive dark lines, and not far from its centre, the brightness rises to a maximum; but these subsequent maxima are in all cases much inferior to the brightness at the centre of the entire pattern (=o, n =o).

So long as there is no sensible discrepancy of phase there can be no sensible diminution of brightness as compared with that to be found at the focal point itself.

We may compare the brightness with that in the direction 0=0.

The subsequent revivals of brightness forming the bright rings are necessarily of inferior brilliancy as compared with the central disk.

If appears that the maximum brightness in the first ring is only about 5 1 1 of the brightness at the centre.

The mean brightness varies as z3 (or as r3), and the integral found by multiplying it by zdz and integrating between o and co converges.

It may be instructive to contrast this with the case of an infinitely narrow annular aperture, where the brightness is proportional to Jo 2 (z).

The mean brightness varies as .51; and the integral f J02(z)zdz is not convergent.

The visibility of a star is a question of brightness simply, and has nothing to do with resolving power.

(7) If B m denote the brightness of the mth lateral image, and Bo that the central image, we have amp 'cosx' dx= a d (1) (-) m7r B.: Bo= a+d am?r sin' a4 d (1).

a+d If B denotes the brightness of the central image when the whole of the space occupied by the grating is transparent, we have Bo:B =a2:(a+d)2, and thus (2).

The light stopped by the opaque parts of the grating, together with that distributed in the central image and lateral spectra, ought to make up the brightness that would be found in the central image, were all the apertures transparent.

Babinet, the brightness of a lateral spectrum is not affected by an interchange of the transparent and opaque parts of the grating.

If we now suppose half the grating cut away, so as to leave 1000 lines in half an inch, the dispersion will not be altered, while the brightness and resolving power are halved.

Such a conclusion would be in the face of the principle of energy, which teaches plainly that the retardation in question leaves the aggregate brightness unaltered.

This was first suggested by Thomas Young, who showed that the rays producing the bows consisted of two systems, which, although emerging in parallel directions, traversed different paths in the drop. Destructive interference between these superposed rays will therefore occur, and, instead of a continuous maximum illumination in the direction of minimum deviation, we should expect to find alternations of brightness and darkness.

The brightness of the image is sometimes in creased by silvering the glass; and on removing a small portion of the silver the observer can Object see the image with part of the pupil while he sees the paper through the unsilvered aperture with the remaining part.

The disk 32 operates the wire gauze screens for equalizing the brightness of the two stars under observation.

Dr Chase's measures with the Yale heliometer indicated for it, in 1894, a parallax of about o" � 035; 2 and it must, accordingly, be of nearly four times the total brightness of Sirius, while its aerial lustre exceeds seventyfold that of the solar photosphere.

26, for "in our image" certainly suggests a being equal in brightness and in capacities to the angels - a view which, as we know, became the favourite one in apocryphal and Haggadic descriptions of the Adam before the Fall.

Similarly in Baba batra, 58a, we read, "he was of extraordinary beauty and sun-like brightness."

With the first instrument of this kind, having objectives of 1 5 inch aperture, he measured the brightness of 4260 stars, including all stars down to the 6th magnitude between the North Pole and - 30° declination.

That this should have been due to the process of dissipation does not seem possible in so short a period; we must therefore consider either that the earlier accounts are greatly exaggerated, or that the brightness of the comet is subject to changes from some unknown cause.

5 According to Stansfield there are three companion lines on either side of a central line, which consists of two lines of unequal brightness.

It is much shorter than the typical instruments described, so that the maximum brightness of image is obtained.

When dressed and dyed they should have regular, close and bright curl, varying from a small to a very large one, and if of equal size, regularity, tightness and brightness, the value is comparatively a matter of fancy.

The extent to which it renders aurora invisible depends, however, so much on the natural brightness of the aurora - which depends on the time and the place - and on the sharpness of the outlook kept, that it is difficult to gauge it.

In auroral displays the brightness often varies greatly over the illuminated area and changes rapidly.

The halo diminishes in brightness from the centre outwards, and is probably due to the diffraction of light.

This scene has all the happy brightness of the early Galilean ministry which St Mark records.

Notwithstanding this difference in the brightness of the objects, we were able with this reflecting telescope to see whatever we have hitherto discovered with the Huygenian, particularly the transits of Jupiter's satellites and their shadows over his disk, the black list in Saturn's ring, and the edge of his shadow cast on his ring.

Others, however, are periodic, that is to say, the sequence of changes is repeated at regular intervals, and it is thus possible to predict when the maximum and minimum brightness will occur.

The varying brightness, ranging from the ninth to the second magnitude, was recognized in 1639 by John Phocylides Holwarda, and in 1667 Ismael Boulliau (1605-1694) established a periodicity of 333 days.

The different maxima differ considerably in brightness; thus in 1906 (the brightest maximum since 1779) the second magnitude was reached, but in other years (as in 1868) it has failed to reach the fifth magnitude.

The recognition of stars is primarily dependent on their brightness or " magnitude "; and it is clear that stars admit of classification on this basis.

There is reason to believe that all the stars of this class are binary systems, and that the variations of brightness are determined by the different aspects presented by the two component stars during the period of revolution.

" Kepler's " nova in Ophiuchus broke out in 1604 and attained a brightness greater than that of Jupiter; it likewise gradually waned, and disappeared after about fifteen months.

Another interesting feature is that, where the two components differ in brightness, the fainter component is often the one possessing the greater mass.

Thus each cluster seems to consist of two kinds of stars, which we may distinguish as bright and faint; the bright stars are all approximately of one standard size, and the faint stars of another standard size and brightness.

(If only the relative orbit is known, the sum of the masses can be determined; but if absolute positions of one component have been observed, both masses can be determined separately.) But even when, as in most cases, the parallax is unknown or uncertain, the ratio of the brightness to the mass can be accurately found.

There are many stars, however, of which the brightness is less than that of the sun in proportion to the mass.

Brightness is particularly deceptive; thus Canopus, the second brightest star in the heavens, has probably a parallax of less than 0.01 ", and so also has Rigel.

But notwithstanding the great variety of intrinsic brightness of the stars, the ratio of the number of stars of one magnitude to the number of the magnitude next lower (the " star-ratio ") is a guide to the uniformity of their distribution.

If the stars were all of the same intrinsic brightness it is evident that the comparison of the number of stars of successive magnitudes would show directly where the decreased density of distribution began.

Actually we know that the intrinsic brightness varies very greatly, so that each increase of telescopic power not The table, which is based on over 130,000 stars, shows that along the galactic circle the stars are scattered nearly three times more thickly than at the north and south poles of the Galaxy.

Thus the figure represents a section the (ideally simplified) uni verse cut perpendicular to C P' D the planes AB and CD between which the stars are contained, 1 This number is the 3/2th power of the ratio of the brightness of stars differing by a unit magnitude.

The Milky Way is not of uniform brightness, so that we are perhaps nearer to some parts of it than to others, but it is everywhere very distant from the sun.

Kapteyn finds that magnitude for magnitude, the absolute brightness of the solar stars is only one-fifth of that of the Sirian stars, so that in the mean they must be at less than half the distance.

there will be a gradual increase of brightness in the penumbra from total darkness at the edge next the geometrical shadow to full illumination at the outer edge.

A thing is no longer, as Plato once thought, hot or hard or bright by partaking in abstract heat or hardness or brightness, but by containing within its own substance the material of these qualities, conceived as air-currents in various degrees of tension.

He had all the natural gifts an orator could desire - a commanding presence, a graceful though somewhat theatrical bearing, an eye of piercing brightness, and a voice of the utmost flexibility.

Etymologically the word "silver" probably refers to the shining appearance or brightness of the metal.

It has no sharp boundary, its brightness diminishes rapidly as we recede from the limb, and such structure as it shows consists of long streaks or filaments extending outwards from the limb in broad curved sweeps.

When the slit of the spectroscope is set across a spot, it shows, as might be expected, a general reduction of brightness as we pass from the photosphere to the penumbra; and a still greater one as we pass to the umbra.

Apart then from absorption there will be a discontinuous change in brightness in the apparent disk at that value of the angular radius d which corresponds to tangential emission from the upper lever r' of this mirage-forming region.

No certain guide has been found to tell which stars are nearest to us; both brightness and large proper motion, though of course increased by proximity, are apparently without systematic average relation to parallax.

A star is said to rise one unit in magnitude when the logarithm of its brightness diminishes by 0.4.

It cannot be shown that on Greek soil Apollo originally had the meaning of a sun-god; in Homer, Aeschylus and 'Plato, the sun-god Helios is distinctly separated from Phoebus Apollo; the constant epithet cfoi(30s, usually explained as the brightness of the sun, may equally well refer to his physical beauty or moral purity; XvKrJyEV11S has already been noticed.

He attempted no detailed discussion of planetary theory; but his catalogue of 1 080 stars, divided into six classes of brightness, or " magnitudes," is one of the finest monuments of antique astronomy.

The need is urgent of fixing a scale, and defining standards of actinic brightness; but it has not yet been successfully met.

That this is not a necessary characteristic of light was discovered by Christian Huygens, who found that, whereas a stream of sunlight in traversing a rhomb of spar in any but one direction always gives rise to two streams of equal brightness, each of these emergent streams is divided by a second rhomb into two portions having a relative intensity dependent upon the position with respect to one another of the principal planes of the faces of entry into the rhombs - the planes through the axes of the crystals perpendicular to the refracting surfaces.

Arago in 1811 found that in the case of white light and with moderately thin plates the transmitted light is no longer white but coloured, a variation of brightness but not of tint being produced when the polarizer and analyser being crossed are rotated together, while the rotation of the analyser alone produces a change of colour, which passes through white into the complementary tint.

The brightness is at its maximum along its central line, called the axis of the light.

Along this axis the brightness continually increases as the sun is approached.

So long as the exit pupil is completely filled the brightness of the image will be approximately equal to that of free vision.

If, however, we fix the points lying towards the margin of the field of view, the diaphragm gradually cuts off more and more of the rays which were necessary to fill the pupil, and in consequence the brightness gradually falls off to zero.

But since no rays are lost in this transmission (apart from the slight loss due to reflection) the brightness of the image point in the water is as large as that in air, although the apertures have become less.

In the case of the brightness of large objects obviously the whole pencil is involved, and hence the clearness is the squares of these values, i.e.

In immersion-systems a very much greater aggregate of rays is used in the representation than is possible in dry-systems. In addition to a considerable increase in brightness the losses due to reflection are avoided; losses which arise in passing to the back surface of the cover-slip and to the front surface of the front lens.

When this occurs the greatest brightness will be obtained if the corresponding diaphragms of the two systems coincide; i.e.

His marriage brought much brightness into his life, a naturalness into his style and a greater attention to the picturesque.

He cast his eyes downward, away from the brightness, and saw little except the ground in front of him.

She blinked back the flood of brightness and covered her eyes as she slumped back on the sofa.

He jumped to his feet flipping light switches and stumbling through both rooms, barely seeing still-sleeping Cynthia through eyes pinched nearly closed against the intrusive brightness.

The emerging brightness of the new day, while inviting, did nothing to sort out the tangle of thoughts crowding his brain like the line of a snarled fishing reel.

There, standing sil­houetted in the brightness behind him stood the pride of the FBI, Jonathan Winston.

He retreated toward the bathroom just as the door opened—and just as Dean hit the light switch and rolled to the floor, flooding the room in brightness.

She made her way back and circled the screaming pillar, shielding her eyes against its brightness.

At Hilden's silence, Taran opened his eyes, irritated by the brightness.

She blinked, blinded by the brightness of the morning sun streaming into the catacombs.

They emerged into the morning sun, and Xander shielded his delicate eyes from the brightness.

He returned to the glaring brightness of the condo.

The sudden brightness blinded her, and she shielded her eyes.

adjust brightness, contrast, or color, within selected areas.

By the 19th century astronomers had developed the technology to objectively measure a star's brightness.

brightness of these energy-saving lamps makes all other ESL reflectors look outmoded.

brightness of these bulbs depends on the number of watts they have.

brightness of the star to fade below the naked eye visibility.

brightness of sun on snow.

For example, you may wish to adjust brightness, contrast, or color, within selected areas.

It's worth noting that more can be done to tweak brightness using external programs - ones that are popular for bona fide reasons.

But the perceived brightness of an object is a function of the receiver.

Dimmer: a switch or dial designed to raise or lower the brightness of a light fixture.

Monitor Does the screen have easily adjustable brightness and contrast controls?

The period of the pulsation pattern is directly related to the star's intrinsic brightness.

This will keep stellar brightness near normal, with some minor color shift.

A dusty envelope made the apparent brightness of the star to fade below the naked eye visibility.

Students will understand how a binary star system's orbit can cause changes in the observed brightness of the system.

Things I like: The gorgeous screens, play them at maximum brightness for maximum effect!

brightness adjustment is used to lighten dark photographs or darken bright ones.

It features an impressive 8ms response time, 1000:1 contrast ratio, 550 cd/m2 brightness and is HD Ready with HDCP compliant HDMI connections.

Using two lamps, two color wheels and dual illumination channeling, the F3 achieves up to 5500 ANSI lumens brightness on screen.

For uniform surface brightness sources, an aperture with an area of 1 square arcsec is used.

If the exposure times, atmospheric transparency or sky brightness have varied, then data must be ` normalized ' before combination.

The choice of EPIC operation mode depends primarily on the target's X-ray brightness.

All three galaxies possess a central bulge of similar brightness.

calcined clays generally provide the best brightness, titanium dioxide extension and dry hide.

Increase the brightness says the cardinal from another page but nobody does.

No color or brightness information was provided in the original catalog for these two entries.

Adjust the focus of the substage condenser for maximum brightness of the central field of view.

Since the first use I've noticed a difference in the texture of my skin as well as brightness.

He derived the distances from inverse square law of brightness: clusters farther away should appear dimmer.

Brightness of the image is controlled with a light dimmer fitted to the illuminator.

Fully multi coated optics deliver optimum brightness and color fidelity.

Osborne needed small, lightweight, high brightness, low power lighting fixtures able to run off one 13 Amp ring main!

galaxyuring surface brightness profiles in elliptical galaxies Click here to see the project Surface brightness of galaxies for further information.

This generates high brightness beams of energetic gamma rays, protons, neutrons, and heavy ions.

The ThinkVision L171p's flat, matte screen minimizes glare and reflection without detracting from the display's high brightness score.

It will increase the brightness of the image, but will also make the image grainy, hence ' last resort ' .

intrinsic brightness.

krypton bulb for extra brightness (make sure you're nowhere near Superman ).

Louvreunny days the brightness may be excessive; external louvers help to mitigate this.

lumen brightness with ultra-quiet fan noise.

lumens of brightness.

Luminance Signal - That portion of the NTSC color television signal which contains the luminance Signal - That portion of the NTSC color television signal which contains the luminance or brightness information.

matronly figure in silhouette, framed by the brightness of the gas-lit hall.

noonday brightness.

The steps of the stairs are required to have nosings that contrast in brightness with the rest of the stair.

om observations of sources beyond these brightness limits are not allowed.

The sensational brightness of these energy-saving lamps makes all other ESL reflectors look outmoded.

The UT maximum of the integrated column brightness does not necessarily correspond to the maximum in electron precipitation.

There is a brightness control, and a removable filter to increase brightness for monochrome printing.

All models have the benefit of multi-coated optics and phase coated prisms for extra brightness and clarity.

Crop, rotate, correct brightness and remove red-eye with a click of a button.

rerunning the test in manual mode and adjusting the flash brightness.

reticle brightness.

rheostat brightness control.

self-acting mechanism which controls brightness of the device as a function of ambient light.

And infra-red sensors pick up signals from the hand-held remote control units used to manually adjust the lighting brightness.

Setting a higher sensitivity ensures sufficient brightness even when a high-speed shutter is being used.

skewness of the pixel brightness distribution varies over the image.

To make things easier, the brightness slider can be used to adjust the tint of the color defined by the RGB sliders.

I'm driving into gently falling snowflakes that are drifting slowly toward me, emerging from gray gloom into the brightness of my headlights.

substage condenser for maximum brightness of the central field of view.

tweak brightness using external programs - ones that are popular for bona fide reasons.

Perhaps the best data for a comparison are those afforded by the varying brightness of stars at different altitudes.

353), with which he measured the relative brightness of 2784 stars between the North Pole and about - so declination.

a man-like form (Yahweh) surrounded by a rainbow brightness.

It is, however, not a mere coincidence that the two great kabbalistic text-books, the Bahir and the Zohar (both meaning "brightness"), appear first in the 13th century.

It is only after the service of consecration and the mass are finished that the consecrating prelate asperses and blesses the mitre and places on the head of the newly consecrated bishop, according to the prayer which accompanies the act, " the helmet of protection and salvation," the two horns of which represent " the horns of the Old and New Testaments," a terror to " the enemies of truth," and also the horns of " divine brightness and truth " which God set on the brow of Moses on Mount Sinai.

" As the little water-drop poured into a large measure of wine seems to lose its own nature entirely and to take on both the taste and the colour of the wine; or as iron heated red-hot loses its own appearance and glows like fire; or as air filled with sunlight is transformed into the same brightness so that it does not so much appear to be illuminated as to be itself light - so must all human feeling towards the Holy One be self-dissolved in unspeakable wise, and wholly transfused into the will of God.

vii., where wisdom, the brightness of the everlasting light, is the source of all that is noblest in human life.

Red lead or triplumbic tetroxide, Pb304, is a scarlet crystalline powder of specific gravity 8.6-9.1, obtained by roasting very finely divided pure massicot or lead carbonate; the brightness of the colour depends in a great measure on the roasting.

When light proceeding from a small source falls upon an opaque object, a shadow is cast upon a screen situated behind the obstacle, and this shadow is found to be bordered by alternations of brightness and darkness, known as " diffraction bands."

An interesting exception to the general rule that full brightness requires the existence of the first zone occurs when the obstacle assumes the form of a small circular disk parallel to the plane of the incident waves.

The linear dimension of the diffraction pattern is inversely as that of the aperture, and the brightness at corresponding points is as the square of the area of aperture.

Within the rectangle formed by pairs of consecutive dark lines, and not far from its centre, the brightness rises to a maximum; but these subsequent maxima are in all cases much inferior to the brightness at the centre of the entire pattern (=o, n =o).

If the aperture be increased, not only is the total brightness over the focal plane increased with it, but there is also a concentration of the diffraction pattern.

So long as there is no sensible discrepancy of phase there can be no sensible diminution of brightness as compared with that to be found at the focal point itself.

We may go further, and lay it down that there can be no considerable loss of brightness until the difference of phase of the waves proceeding from the nearest and farthest parts of the aperture amounts to X.

We may compare the brightness with that in the direction 0=0.

or -2/37r:1; so that the brightness in this direction is 4/91r 2 of the maximum at 0=0.

Let us now consider the distribution of brightness in the image of a double line whose components are of equal strength, and at such an angular interval that the central line in the image of one coincides with the first zero of brightness in the image of the other.

The brightness (corresponding to B) midway between the two central points AA' is 8106 of the brightness at the central points themselves.

If the angular interval between the components of a double line be half as great again as that supposed in the figure, the brightness midway between is 1802 as against 1.0450 at the central lines of each image.

But, as will be evident, the bright bands bordering the central band are now not inferior to it in brightness; in fact, a band similar to the central band is reproduced an indefinite number of times, so long as there is no sensible discrepancy of phase in the secondary waves proceeding from the various parts of the same slit.

The greatest brightness is at the centre, where dC = 27rp d p, C = 7rR2.

The subsequent revivals of brightness forming the bright rings are necessarily of inferior brilliancy as compared with the central disk.

If appears that the maximum brightness in the first ring is only about 5 1 1 of the brightness at the centre.

" Thus the magnitude of the central spot is diminished, and the brightness of the rings increased, by covering the central parts of the object-glass."

The mean brightness varies as z3 (or as r3), and the integral found by multiplying it by zdz and integrating between o and co converges.

It may be instructive to contrast this with the case of an infinitely narrow annular aperture, where the brightness is proportional to Jo 2 (z).

The mean brightness varies as .51; and the integral f J02(z)zdz is not convergent.

Under these conditions there is no doubt that the star would appear to be fairly resolved, since the brightness of its external ring system is too small to produce any material confusion, unless indeed the components are of very unequal magnitude.

The visibility of a star is a question of brightness simply, and has nothing to do with resolving power.

If, however, as in practice, the light be heterogeneous, the source of finite area, the obstacles in motion, and the discrimination of different directions imperfect, we are concerned merely with the mean brightness found by varying the arbitrary phase-relations, and this is obtained by simply multiplying the brightness due to a single aperture by the number of apertures (n) (see Interference Of Light, § 4).

(7) If B m denote the brightness of the mth lateral image, and Bo that the central image, we have amp 'cosx' dx= a d (1) (-) m7r B.: Bo= a+d am?r sin' a4 d (1).

a+d If B denotes the brightness of the central image when the whole of the space occupied by the grating is transparent, we have Bo:B =a2:(a+d)2, and thus (2).

The light stopped by the opaque parts of the grating, together with that distributed in the central image and lateral spectra, ought to make up the brightness that would be found in the central image, were all the apertures transparent.

Babinet, the brightness of a lateral spectrum is not affected by an interchange of the transparent and opaque parts of the grating.

From the value of B.: Bo we see that no lateral spectrum can surpass the central image in brightness; but this result depends upon the hypothesis that the ruling acts by opacity, which is generally very far from being the case in practice.

If we now suppose half the grating cut away, so as to leave 1000 lines in half an inch, the dispersion will not be altered, while the brightness and resolving power are halved.

Such a conclusion would be in the face of the principle of energy, which teaches plainly that the retardation in question leaves the aggregate brightness unaltered.

This was first suggested by Thomas Young, who showed that the rays producing the bows consisted of two systems, which, although emerging in parallel directions, traversed different paths in the drop. Destructive interference between these superposed rays will therefore occur, and, instead of a continuous maximum illumination in the direction of minimum deviation, we should expect to find alternations of brightness and darkness.

The establishment of Singh Sabhas, of Sikh newspapers, and the spread of education have largely tended in the same direction, but the strict ethical code of Sikhism and the number of its obligatory divine services have caused many to fall away from the faith: nor does the austere Sikh ritual appeal to women, who generally prefer Hinduism with its picturesque material worship and the brightness of its innumerable festivals.

The brightness of the image is sometimes in creased by silvering the glass; and on removing a small portion of the silver the observer can Object see the image with part of the pupil while he sees the paper through the unsilvered aperture with the remaining part.

The disk 32 operates the wire gauze screens for equalizing the brightness of the two stars under observation.

Montanari in 1669 to fluctuate in brightness.

Dr Chase's measures with the Yale heliometer indicated for it, in 1894, a parallax of about o" � 035; 2 and it must, accordingly, be of nearly four times the total brightness of Sirius, while its aerial lustre exceeds seventyfold that of the solar photosphere.

26, for "in our image" certainly suggests a being equal in brightness and in capacities to the angels - a view which, as we know, became the favourite one in apocryphal and Haggadic descriptions of the Adam before the Fall.

Similarly in Baba batra, 58a, we read, "he was of extraordinary beauty and sun-like brightness."

With the first instrument of this kind, having objectives of 1 5 inch aperture, he measured the brightness of 4260 stars, including all stars down to the 6th magnitude between the North Pole and - 30° declination.

But its brightness was far from comparing with the glorious accounts of its former apparitions.

That this should have been due to the process of dissipation does not seem possible in so short a period; we must therefore consider either that the earlier accounts are greatly exaggerated, or that the brightness of the comet is subject to changes from some unknown cause.

5 According to Stansfield there are three companion lines on either side of a central line, which consists of two lines of unequal brightness.

It is much shorter than the typical instruments described, so that the maximum brightness of image is obtained.

When dressed and dyed they should have regular, close and bright curl, varying from a small to a very large one, and if of equal size, regularity, tightness and brightness, the value is comparatively a matter of fancy.

The extent to which it renders aurora invisible depends, however, so much on the natural brightness of the aurora - which depends on the time and the place - and on the sharpness of the outlook kept, that it is difficult to gauge it.

In auroral displays the brightness often varies greatly over the illuminated area and changes rapidly.

At Jan Mayen (8) in 1882-1883 a scale was employed running from 1, taken as corresponding to the brightness of the milky way, to 4, corresponding to full moonlight.

The halo diminishes in brightness from the centre outwards, and is probably due to the diffraction of light.

This scene has all the happy brightness of the early Galilean ministry which St Mark records.

Notwithstanding this difference in the brightness of the objects, we were able with this reflecting telescope to see whatever we have hitherto discovered with the Huygenian, particularly the transits of Jupiter's satellites and their shadows over his disk, the black list in Saturn's ring, and the edge of his shadow cast on his ring.

Stars whose brightness fluctuates are called variable stars.

Others, however, are periodic, that is to say, the sequence of changes is repeated at regular intervals, and it is thus possible to predict when the maximum and minimum brightness will occur.

The varying brightness, ranging from the ninth to the second magnitude, was recognized in 1639 by John Phocylides Holwarda, and in 1667 Ismael Boulliau (1605-1694) established a periodicity of 333 days.

The different maxima differ considerably in brightness; thus in 1906 (the brightest maximum since 1779) the second magnitude was reached, but in other years (as in 1868) it has failed to reach the fifth magnitude.

The recognition of stars is primarily dependent on their brightness or " magnitude "; and it is clear that stars admit of classification on this basis.

There is reason to believe that all the stars of this class are binary systems, and that the variations of brightness are determined by the different aspects presented by the two component stars during the period of revolution.

" Kepler's " nova in Ophiuchus broke out in 1604 and attained a brightness greater than that of Jupiter; it likewise gradually waned, and disappeared after about fifteen months.

Another interesting feature is that, where the two components differ in brightness, the fainter component is often the one possessing the greater mass.

Thus each cluster seems to consist of two kinds of stars, which we may distinguish as bright and faint; the bright stars are all approximately of one standard size, and the faint stars of another standard size and brightness.

(If only the relative orbit is known, the sum of the masses can be determined; but if absolute positions of one component have been observed, both masses can be determined separately.) But even when, as in most cases, the parallax is unknown or uncertain, the ratio of the brightness to the mass can be accurately found.

There are many stars, however, of which the brightness is less than that of the sun in proportion to the mass.

Brightness is particularly deceptive; thus Canopus, the second brightest star in the heavens, has probably a parallax of less than 0.01 ", and so also has Rigel.

But notwithstanding the great variety of intrinsic brightness of the stars, the ratio of the number of stars of one magnitude to the number of the magnitude next lower (the " star-ratio ") is a guide to the uniformity of their distribution.

This depends on the law of progression in the number of stars as the brightness diminishes.

If the stars were all of the same intrinsic brightness it is evident that the comparison of the number of stars of successive magnitudes would show directly where the decreased density of distribution began.

Actually we know that the intrinsic brightness varies very greatly, so that each increase of telescopic power not The table, which is based on over 130,000 stars, shows that along the galactic circle the stars are scattered nearly three times more thickly than at the north and south poles of the Galaxy.

Thus the figure represents a section the (ideally simplified) uni verse cut perpendicular to C P' D the planes AB and CD between which the stars are contained, 1 This number is the 3/2th power of the ratio of the brightness of stars differing by a unit magnitude.

The Milky Way is not of uniform brightness, so that we are perhaps nearer to some parts of it than to others, but it is everywhere very distant from the sun.

Kapteyn finds that magnitude for magnitude, the absolute brightness of the solar stars is only one-fifth of that of the Sirian stars, so that in the mean they must be at less than half the distance.

there will be a gradual increase of brightness in the penumbra from total darkness at the edge next the geometrical shadow to full illumination at the outer edge.

A thing is no longer, as Plato once thought, hot or hard or bright by partaking in abstract heat or hardness or brightness, but by containing within its own substance the material of these qualities, conceived as air-currents in various degrees of tension.

He had all the natural gifts an orator could desire - a commanding presence, a graceful though somewhat theatrical bearing, an eye of piercing brightness, and a voice of the utmost flexibility.

Etymologically the word "silver" probably refers to the shining appearance or brightness of the metal.

It has no sharp boundary, its brightness diminishes rapidly as we recede from the limb, and such structure as it shows consists of long streaks or filaments extending outwards from the limb in broad curved sweeps.

When the slit of the spectroscope is set across a spot, it shows, as might be expected, a general reduction of brightness as we pass from the photosphere to the penumbra; and a still greater one as we pass to the umbra.

Apart then from absorption there will be a discontinuous change in brightness in the apparent disk at that value of the angular radius d which corresponds to tangential emission from the upper lever r' of this mirage-forming region.

No certain guide has been found to tell which stars are nearest to us; both brightness and large proper motion, though of course increased by proximity, are apparently without systematic average relation to parallax.

A star is said to rise one unit in magnitude when the logarithm of its brightness diminishes by 0.4.

It cannot be shown that on Greek soil Apollo originally had the meaning of a sun-god; in Homer, Aeschylus and 'Plato, the sun-god Helios is distinctly separated from Phoebus Apollo; the constant epithet cfoi(30s, usually explained as the brightness of the sun, may equally well refer to his physical beauty or moral purity; XvKrJyEV11S has already been noticed.

He attempted no detailed discussion of planetary theory; but his catalogue of 1 080 stars, divided into six classes of brightness, or " magnitudes," is one of the finest monuments of antique astronomy.

The need is urgent of fixing a scale, and defining standards of actinic brightness; but it has not yet been successfully met.

That this is not a necessary characteristic of light was discovered by Christian Huygens, who found that, whereas a stream of sunlight in traversing a rhomb of spar in any but one direction always gives rise to two streams of equal brightness, each of these emergent streams is divided by a second rhomb into two portions having a relative intensity dependent upon the position with respect to one another of the principal planes of the faces of entry into the rhombs - the planes through the axes of the crystals perpendicular to the refracting surfaces.

Arago in 1811 found that in the case of white light and with moderately thin plates the transmitted light is no longer white but coloured, a variation of brightness but not of tint being produced when the polarizer and analyser being crossed are rotated together, while the rotation of the analyser alone produces a change of colour, which passes through white into the complementary tint.

The brightness is at its maximum along its central line, called the axis of the light.

Along this axis the brightness continually increases as the sun is approached.

So long as the exit pupil is completely filled the brightness of the image will be approximately equal to that of free vision.

If, however, we fix the points lying towards the margin of the field of view, the diaphragm gradually cuts off more and more of the rays which were necessary to fill the pupil, and in consequence the brightness gradually falls off to zero.

But since no rays are lost in this transmission (apart from the slight loss due to reflection) the brightness of the image point in the water is as large as that in air, although the apertures have become less.

In the case of the brightness of large objects obviously the whole pencil is involved, and hence the clearness is the squares of these values, i.e.

In immersion-systems a very much greater aggregate of rays is used in the representation than is possible in dry-systems. In addition to a considerable increase in brightness the losses due to reflection are avoided; losses which arise in passing to the back surface of the cover-slip and to the front surface of the front lens.

When this occurs the greatest brightness will be obtained if the corresponding diaphragms of the two systems coincide; i.e.

His marriage brought much brightness into his life, a naturalness into his style and a greater attention to the picturesque.

Crop, rotate, correct brightness and remove red-eye with a click of a button.

I tried to compensate for this by rerunning the test in manual mode and adjusting the flash brightness.

The NVRS also offers windage and elevation control and adjustable reticle brightness.

An overnight charge will allow a full 8 hours use with rheostat brightness control.

Automatic Brightness Control - In display devices, the self-acting mechanism which controls brightness of the device as a function of ambient light.

And infra-red sensors pick up signals from the hand-held remote control units used to manually adjust the lighting brightness.

Setting a higher sensitivity ensures sufficient brightness even when a high-speed shutter is being used.

It operates by considering how the skewness of the pixel brightness distribution varies over the image.

To make things easier, the Brightness slider can be used to adjust the tint of the color defined by the RGB sliders.

I 'm driving into gently falling snowflakes that are drifting slowly toward me, emerging from gray gloom into the brightness of my headlights.

Excessive brightness can result in a two-dimensional, washed-out look with reduced color saturation.

The astronomer specialized in studying themagnitudeof stars are classifying their brightness.

The astronomerspecializedin studying the magnitude of stars and classifying their brightness.

The astronomer specialized in studying the magnitude of stars and classifying their brightness.

Can display high brightness, sharp contrast and crisp detail images.

The better LCDs have displays that allow you to sit farther to the side, instead of being locked directly in front of the screen for best viewing angle without color brightness dimming or shifting.

The best way to choose a plasma TV is to compare brightness, contrast, picture quality and viewing angles of different TVs in a store.

However, there is a question about how long LCD TVs last, since the brightness of the screen fades over time.

The screen also loses brightness over time and you will need a bulb replacement every couple years that will cost about $250.

For maximum brightness and quality, choose a binocular with 40mm or higher.

Look for Bak4 glass to ensure brightness and quality of image.

For gaming: you want a higher brightness, minimal delay in the action taking place on screen once you've hit a key or entered a command and minimal ghosting taking place when the action is rapid-fire.

For editing photos: you're going to require extreme color accuracy, an excellent viewing, good level of brightness on the whites.

The colors and the brightness shouldn't change as your angle changes.

Others just let you change the brightness and contrast.

Color palettes in Bohemian style decorating are deep and rich without too much brightness.

Whatever lighting system you decide on use dimmers so that you can adjust the brightness.

The brightness of the red will cause your lips to comfortably look larger and fill in the additional area you have drawn.

Tooth Whitening - bleaching teeth for overall brightness or to even out the color.

Under a cappuccino colored lip gloss: The color shone through just enough to add some brightness without overwhelming.

Under nude lipstick: Since lipstick is thicker, it took away a most of the brightness of the color, just made the nude a little more, um, flirty?

It adds brightness and shine to otherwise dull looking lips.

Using Photoshop you can edit a picture's brightness or contrast, superimpose someone into a photo, adjust the color and hue, as well as change the output mode and format.

Digital image editing software makes it easy to adjust the brightness and contrast of a photo, remove red eye, or apply special filters that can help compensate for poor image quality.

The brightness of the flower is relieved by touches of white, or frequently by a white stripe across the centre of the lower petals, which are very full and rounded.

It is tender in many gardens, and especially in cold wet soils, but is useful for its brightness during summer when planted in May or June.

Dead strings are strings that have lost their tone, their brightness and their feel.

You can also get an amplifier with effects, such as brightness, already built in.

They take a little time to reach their full brightness when first switched on, and the quality of light produced by these bulbs can vary from one manufacturer to another.

To maintain the brightness of the fabric, turn the pajamas inside out prior to washing them.

Adjust the brightness control all the way up and turn the contrast all the way down.

Bright Yellow flip ups heighten contrast and give you brightness and visual acuity.

They provide maximum brightness and good visual acuity.

The Zebra photochromic lens changes brightness depending on the intensity of the sun.

Polarized lenses cut the glare and reduce brightness by 90%.

Fishing and driving are ideal for these sunglasses because the polarized lenses reduce glare and minimize brightness.

The makeup of regular sunglass lenses doesn't enable them to break down the horizontally polarized light, so while the brightness of the sun isn't so unbearable and you may have UV protection, you still get the glare off of the water.

The lenses react to UV light, darkening in brighter light, and lightening as the brightness diminishes.

The hard coat scratch resistance is the final finish on the lens.The Q4 polarized gray and smoke lenses reduce brightness without distorting color.

Some people may even find it nice to slip on a lightly tinted pair of readers when doing computer work because of the screen's brightness.

You can adjust the screen's brightness and add headphones, which I would suggest since the single speaker doesn't put out the sound as well as the older systems did.

The "sun" icon on the left adjusts the brightness (DS Lite only).

There are four levels of brightness and each tap cycles through a successive level.

The rich palate formed in traditional Sauvignon Blanc style with lemon-grapefruit brightness, granite minerals, and turning round with buttery vanilla and again with honeydew melon, apricots, and fragrant honeysuckle.

This small flashlight can use any AAA size battery, and will work well on lithium, alkaline, and rechargeable batteries, as well as on li-Ion 10440 3.7 V when you need extra brightness.

You can define the brightness of the light as well as the frequency of the strobe effect.

From the off position there are two head positions, P1 and P2, which define the brightness of the light when it is turned on.

At full output the brightness of the light is approximately 150 lumens, which makes the LF2 flashlight one of the brightest flashlights currently available in this size and category.

Featuring a 3.5-inch capacitive touch screen, the iPhone 4 has a 960 x 640 resolution, 326 pixels-per-inch, 800 to 1 contrast ratio, 500 cd/m2 brightness, and oleophobic coating on the front and back.

Normal visual development is the change from just responding to simple brightness or high contrast, toward the organization of details into patterns and the ability to apply meaning to an object or picture.

Most newborns can focus on and follow moving objects, distinguish the pitch and volume of sound, see all colors and distinguish their hue and brightness, and start anticipating events, such as sucking at the sight of a nipple.

The active energy of yang is the brightness of day with its bustling activity, vivid colors and intense sounds.

Consider a hint of gold to give hair a subtle brightness.

Adding blonde hair highlights to a medium shade will give it a dash of brightness, or you can choose a new blonde shade for your entire style.

You can expect to be back in the chair at least once a month to touch up any outgrowth, and plan on investing in a whitening shampoo as well to maintain the brightness of you platinum tresses at home.

There are plenty to choose from, but the key is to select a color or pattern that adds just a touch of brightness and contrast to your look.

The batteries used to power these candles range from small watch batteries to large C- or D-cells, depending on the size and brightness of the candle itself.

Because of the brightness of the yellow color, canary diamonds are sometimes referred to as lemon or lemon drop stones as well, but beyond the different names, there is a deeper symbolism for these yellow gems.

It is extremely strong and much more durable than gold, and its luminescent brightness helps enhance the color and clarity of diamonds in the band.

The brilliant brightness of platinum - generally brighter than white gold, silver, or other white metals - paired with the distinctive princess diamond cut creates a bold yet simplistic design.

Furthermore, the technology is still new enough that its longevity remains to be seen, and the screen's brightness may fade over time.

Like LCD televisions, however, their brightness may fade and other problems could develop as the sets age.

Check the brightness regularly with a UV light meter, which costs approximately $130.

Replace bulbs when the brightness is under 70 percent.

Brightness indicates how bright an image will appear on your computer monitor.

The majority of monitors available at big box electronics stores have a brightness level of 300.

Fortunately, there's not a huge difference in brightness levels between super cheap and expensive computer monitors.

However, regardless of how much you pay for a cheap flat panel computer monitor, it's a good idea to adjust the brightness to a level you are comfortable with.

The prep school look was in contrast to the messy brightness so prevalent and its footwear was distinguished by penny loafers.

The shoes' brashness and brightness make them irresistible to a variety of "Chucks" fans, including rockers, skaters and rebellious souls.

Use 100+ brightness level 24-pound paper rather than copy paper.

If you have a demure plaid skirt with shades of red in it, try that on too (thought be careful of clashing shades or brightness overload!).

In a culture where the popular image of a fairy is one of brightness and laughter, dark fairies may seem like a contradiction in terms.

At least 70 percent of subjects had increased facial brightness.

The designer offers each background in various shades of brightness so that you can select the one that works best for your webpage design.

Under these conditions there is no doubt that the star would appear to be fairly resolved, since the brightness of its external ring system is too small to produce any material confusion, unless indeed the components are of very unequal magnitude.