Hence one of the best methods of determining the magnifying power of a telescope to measure the diameter of the emergent pencil of rays, after the FIG.
On the other hand, if the emergent streams overlap and the common part be examined, it is found to have all the properties of common light.
In order to isolate a polarized pencil of rays with a rhomb of Iceland spar, it is necessary to have a crystal of such a thickness that the emergent streams are separated, so that one may be stopped by a screen.
In general a stream of plane-polarized light undergoes no change in traversing a plate of an uniaxal crystal in the direction of its axis, and when the emergent stream is analysed, the light, if originally white, is found to be colourless and to be extinguished when the polarizer and analyser are crossed.
telescope has been adjusted to focus upon a star, and to divide the diameter of the object-, glass by the diameter of the emergent pencil.
If 1 2 and 1 1 be the thicknesses traversed by the extreme rays, and a denote the width of the emergent beam, the dispersion is given by 0 Sµ 0 2 - 11)/a, or, if t i be negligible, 0 = Sµt/a (6) The condition of resolution of a double line whose components subtend an angle 0 is that 0 must exceed X/a.
5-10, 14 f., belonging to the year 605, and representing the emergent power of the Chaldaeans as a divine scourge of the faithless people; (b) Woes against the Chaldaeans, presupposing not only tyrannous rule over many peoples, but the beginning of their decline and fall, and therefore of date about J40 B.C. (ii.
As the sun rises, the rays enter the prisms more and more obliquely, and the angle of minimum deviation increases; but since the emergent ray makes the same angle with the refracting edge as the incident ray, it follows that the parhelia will remain on the parhelic circle, while receding from the inner halo.
If this axis be parallel or perpendicular to the primitive plane of polarization, the emergent beam remains plane polarized; it is circularly polarized if the axis be at 45° to the plane of polarization, and in other cases it is elliptically polarized with the axes of the elliptic path parallel and perpendicular to the axis of the plate.
Plane polarized light gives in general two streams of unequal intensity when examined with a rhomb, and for certain positions of the crystal there isonly one emergent stream.
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.
There are, however, certain crystals that with a moderate thickness give an emergent stream of light that is more or less completely polarized.
The Singleplayer and Co-op modes are truly emergent and unpredictable.
The latter benefited the emergent middling tenantry more than they did the rural and urban poor.
Whilst on their wintering grounds in coastal British Columbia, the birds mainly eat roots and tubers of emergent plants on tidal flats.
For an ischemic stroke, initial emergent treatment focuses on restoring blood flow to the brain.
Even though the information presented here is geared toward a planned hospitalization, the communication tips will also prove helpful to parents when their child's hospitalization is emergent.
If the hospital admission was emergent, the parents should notify the insurance company as soon as possible.
While acid-washes and completely ripped apart jeans aren't as emergent in modern fashion, skinny jeans have made a huge comeback and have gone from the runway to retailer.
The emergent technology of e-VLBI is set to revolutionize radio astronomy.
coherence in microtubules: a neural basis for emergent consciousness?
emergent phenomena define " levels " .
emergent literacy: The role of empirical evidence.
emergent behavior far beyond their individual capacities.
emergent findings are discussed, together with their implications for practice development.
But the sentence also suggests newly emergent meanings, not yet clearly understood.
The overall nature of the organism is then emergent from the sum of these local functions.
The open waters hold a range of aquatic plant species, with emergent swamp around the margins, backed by a species- rich fen.
These are significant developments that may contribute to supporting children's emergent literacy and numeracy.
modality ' zone ' framework of ' modalities of emergent identity ' will be presented.
In the process, they are shifting the emphasis from genes and fitness to emergent order as a primary source of evolutionary novelty.
parlance of complexity theory, cyberspace is an emergent phenomena, something that is more than the sum of its parts.
DIY 3 projects are aimed at both emergent and experienced practitioners and will take place in London and the South East.
Group Members understand the importance of the emergent housing agenda, particularly in relation to sustainable community regeneration within diverse neighborhoods.
The emergent adults feed on newly planted saplings in a new clear felling.
tubers of emergent plants on tidal flats.
The larvae are aquatic, feeding below the surface on the submerged parts of emergent vegetation.
However, it is also possible that some emergent therapies have an inbuilt resistance to empirical verification and its obvious corollary: falsification.
The resolving power and the width of the emergent beam fix the optical character of the instrument.
If this axis be parallel or perpendicular to the primitive plane of polarization, the emergent beam remains plane polarized; it is circularly polarized if the axis be at 45Ã‚° to the plane of polarization, and in other cases it is elliptically polarized with the axes of the elliptic path parallel and perpendicular to the axis of the plate.
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