Spectral sentence example
We cannot here do more than refer to the spectral type of the sun.
Can it really be possible that a spectral, supernatural hound lurks on the barren moor?
Figure 1. Spectral changes spaced a minute apart during enzyme catalysis in crystals of E. coli amine oxidase.
We also investigate the effect of self-consistency in the self-energy within the GW approximation on the spectral function and total energy.
The FT spectrographs take advantage of a new, large-format CCD which allows very broad spectral coverage in a single exposure.Advertisement
A few CDS catalogs do not contain celestial coordinates; spectral line wavelength lists are the obvious example.
Sixteen objects (31 %) have a power-law continuum with spectral indices -2.3 - -0.9 that flatten to -1.1 - 0.0 at 20.
Earlier work established the potential for estimating spectral irradiance from multi-band data using a neural network technique (Milton et al., 2000 ).
For stations at in the Irminger Basin, a model based on phytoplankton photosynthetic responses to changes in spectral irradiance was the most accurate.
It measures spectral global irradiance between 280 and 600 nm with a step size of 0.5 nm and a resolution of 1 nm.Advertisement
Due to their narrow spectral lines, they also act as a high-resolution probe of gas kinematics in outflow regions and active galactic nuclei.
The benefit is a dramatic reduction in spectral leakage, enabling any measure of zero padding to be used.
Among the kelp forests and the rock lobsters and the nudibranchs, spectral hulks cast eerie shadows.
When the Normalize option is checked, the spectral magnitudes are adjusted so that power is conserved.
The integration is done in frequency partitions that use the midpoints between adjacent spectral peak frequencies.Advertisement
Synchrotron infrared spectroscopy allowed the chemisorption bonds of both surface modifiers and reactant molecules to be probed with high spectral resolution.
It also has the spectral signature of a miniature bipolar outflow.
The peaks arise because the denominator will approach zero at sinusoidal frequencies, resulting in exceedingly sharp spectral peaks.
Both the spectral and time-interval profiles have the units of frequency, and together they can explain most pitch perceptions.
In particular, the work will employ spectral diagnostics developed for solar physics research to understand what is going on in the tokamak plasmas.Advertisement
It is often said that ghostly processions and spectral monks dressed in white habits haunt the track.
The measurement of black body temperature therefore links the primary spectral radiance and irradiance scales to primary detector scales.
Since the energy response and spectral resolution of the two grating assemblies differ, separation of the output may be important for some observers.
Eurotherm's System 21 uses a spectral fingerprint sensor to measure coating thickness on substrates.
Caltech have a Virtual Planetary Laboratory aimed at reproducing possible spectral signatures to help the Terrestrial Planet Finder program.Advertisement
Unlike LASCO, it will make measurements and images between 2 and 10 solar radii with high spectral and spatial resolution.
Explain the physical cause of the spin-orbit splitting of energy levels (and therefore spectral lines ).
So it accelerate in a differnt way then spectral features themself.
The functions listed below are the results of our collaborative research on human cone spectral sensitivities and luminance sensitivity.
In Figure 5, the energy period lies in the middle of the power spectral density.Advertisement
From the black sky A2 observations background spectral file were derived.
Disp A three character code indicating the dispersion used to determine the mk spectral type, or a quality for the spectral type.
This database illustrates searching for spectral properties based on (inter alia) chemical substructure searches.
Atomic spectra generally consist of many sharp lines which, in the absence of spectral overlap, appear symmetrical.
Combine a guided trip with a hunt for spectral tarsier at dusk for value for money.Advertisement
Errors in estimating this white noise variance are translated to errors in scale of the AR spectral values.
A statistical comparison of the spectral width with the flow reversal boundary has been conducted using three years of data.
As a step towards removing this difficulty we notice that the energy of a vibration such as is represented by a spectral line has the peculiarity of being unable to exist (so far as we know) without suffering dissipation into the ether.
High accuracy filter radiometers are used in thermal and optical metrology, for temperature measurements, photometry, and derivation of spectral emission.
Use the reflectance curves illustrating the spectral response patterns of these two categories to help explain your answer.Advertisement
Spectral sensitivities of human cone visual pigments determined in vivo and in vitro.
Eurotherm 's System 21 uses a spectral fingerprint sensor to measure coating thickness on substrates.
A spectral feature near 10 microns is evidence for small amorphous silicate grains.
Note that spectral leakage to other bins will reduce the power reported for each component.
The NL SF algorithm adds full spectral factorization so that both the AR and MA roots will lie within the unit circle.Advertisement
Explain the physical cause of the spin-orbit splitting of energy levels (and therefore spectral lines).
Disp A three character code indicating the dispersion used to determine the MK spectral type, or a quality for the spectral type.
Gliding spectral lines can be recreated by gradual reduction of the time gaps between the events.
The spectral peak count will be half the signal subspace value.
Spectral transmittance can be measured at either selected wavelengths or by using a scanning technique at regular intervals.Advertisement
Again the music is suggestive of an unfamiliar terrain toward which these sirens draw the unwary through spectral waves.
Spectral analysis showed that cardiac vagal tone was increased by beta blocker therapy, even under conditions of stress.
Serengeti's patented "Spectral Control System" selectively filters the various wavelengths of light, giving truer, clearer color perception.
Spectral karyotyping (SKY), an advanced method of screening chromosomes for numeric and structural abnormalities, is used to evaluate pediatric tumors.
Before the moment when she saw the book, she hadn't wanted to connect the spectral figure of her mind with the very real man before her.
The sources exhibit a very wide range of spectral hardness, with interstellar absorption identified as a major influence.
He appears as a great man with stag antlers crowning his head, sometimes leading a pack of spectral hounds.
We can detect these small motions by looking at the Doppler shift in spectral lines emitted by atoms in the solar surface.
Colors in brackets, "  ", are assumed from the spectral classification.
A white light corona is the sum of all the coronae contributions from each spectral color.
The spectral leakage increases since zero padding introduces a discontinuity in the data stream.
The spectral and total emissivity can then be calculated using the above equations.
The bell-shaped curve forms a " spectral envelope " .
For damped exponentials, the ordering is by energy spectral density at the peak frequency.
The objective is to measure up- and downward spectral irradiances in the wavelength range between 295 and 1700 nm.
This usually means the measurement of spectral transmittance, spectral reflectance, spectral radiance factor or spectral fluorescence.
Table 1 lists a number of mass spectral cracking patterns.
An important feature added to the discussion by Adams is the different behaviour of spectral lines 880 860' 840' 820' 800 780' 760 740' 720' 700 0 consider first a frictionless fluid.
If we regard the sun as one of the stars, the first four questions we should seek to answer are its distance from its neighbours, proper motion, magnitude and spectral type.
There ensued a general classification of the stars by Secchi into four leading types, distinguished by diversities of spectral pattern; and the recognition by Huggins of a considerable number of terrestrial elements as present in stellar atmospheres.
The privileges of the old fraternities were not formally abolished until 1835; and the substantial remains or spectral forms of some are still visible in other towns besides London.
The present writer drew attention to this difficulty as far back as 1881, 1 when he pointed out that the different intensities of different spectral lines need not involve the consequence that in an enclosure of uniform temperature the energy is unequally partitioned between the corresponding degrees of freedom.
Lord Rayleigh,' who has also investigated vibrating systems giving series of lines approaching a definite limit of " root," remarks that by dynamical reasoning we are always led to equations giving the square of the period and not the period, while in the equation representing spectral series the simplest results are obtained for the first power of the period.
Thus a monochromatic image of the sun, formed of a great number of successive images of the spectral line employed, will be built up on the plate.
The very high dispersion (index for red light = 2.402, for blue light = 2.460) gives it the wonderful " fire " or display of spectral colours.
Further, auroras are often possessed of rapid motion, so that conceivably spectral lines may receive small displacements in accordance with Doppler's principle.
Let it be supposed that two positive lenses of equal curvature powers are made out of these two glasses, then in order to represent the combined dispersion of the two together the two 0µ's for each spectral region may be added together to form 0'µ as in the line below, and then, on again expressing the partial z'µ in terms of L'µ (C to F) we get the new figures in the bottom row beneath the asterisks.
If both the bodies are luminous, especially if they do not differ much in brilliancy, the motion of revolution is shown by a periodic doubling of the lines of the spectrum; when one body is moving towards us and the other away their spectral lines are displaced (according to Doppler's principle) in opposite directions, so that all the lines strong enough to appear in both spectra appear double; when the two bodies are in conjunction, and therefore moving transversely, their spectra are merged into one and show nothing unusual.
More usually, however, only one component is sufficiently luminous for its spectrum to appear; its orbital motion is then detected by a periodic change in the absolute displacement of its spectral lines.
It has been shown by means of spectroscopic observations that the green colour of the elytra, &c., is due to the presence of chlorophyll; and that the variations of the spectral bands are sufficient, after the lapse of many years, to indicate with some certainty the kind of leaves on which the insects were feeding shortly before they were killed.
Man and the actual universe kept on reasserting their rights and claims, announcing their goodliness and delightfulness, in one way or another; but they were always being thrust back again into Cimmerian regions of abstractions, fictions, visions, spectral hopes and fears, in the midst of which the intellect somnambulistically moved upon an unknown way.
The irregularities incidental to use of the spots are escaped by comparing the relative Doppler displacements of the same spectral line as given by the receding and advancing limbs of the sun.
Some of the former are to be seen at the limb on most occasions; they may hang for days about the same place; they reach altitudes of which the average is perhaps 20,000 m., and show the spectral lines of hydrogen and helium.
Since identification of spectral lines is a matter of extreme refinement, any cause which may displace lines from their normal places, or otherwise change their features, must be examined scrupulously.
In observing with strong systems it is therefore necessary cautiously to distinguish between spectral and real marks.
In order to bring a spectral line upon the camera slit, the slit is widely opened and the plane mirror (f) rotated until the line is seen.
Several estimates have been made which agree well together; whether direct use is made of known parallaxes, or comparison is made with binaries of well-determined orbits of the same spectral type as the sun, in which therefore it may be assumed there is the same relation between mass and brilliancy (Gore), the result is found that the sun's magnitude is - 26.5, or the sun is Io n times as brilliant as a first magnitude star; it would follow that the sun viewed from a Centauri would appear as of magnitude 0.7, and from a star of average distance which has a parallax certainly less than o 1 ", it would be at least fainter than the fifth magnitude, or, say, upon the border-line for naked-eye visibility.
C. Vogel published a modification of Secchi's scheme of stellar diversities, and gave it organic meaning by connecting spectral differences with advance in " age."