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Explain about the term spatial coherence of Laser.
Spatial coherence:
This coherence is a measure of the correlation among the phases of a light wave at several points’ transverse to the direction of propagation. This coherence tells us how identical the phase of the wave front is. More exactly, the spatial coherence is the cross-correlation in between two points into a wave for all times. When a wave has only one value of amplitude over an infinite length, then this is absolutely spatially coherent.
What is the angular acceleration of the Earth around the Sun? What equation is used to derive it?
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State the uses of Zinc sulphide Zinc sulphide has a lattice constant of 0.596nm . The sulfide ions are quite big (atomic radius 184 pm) relative to the size of the zinc ions (7
Q. Illustrate what is dissimilar between secondary electron image and back scattered electron image? Answer:- Secondary electron images demonstrate topography of a sample.
how CPH is able produce all bosons? Answer; the fermions produce their bosons. Look at the pair production that before of pair there is not boson, however after pair bosons app
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Zehnder's balance This ingenious balance, which is very beneficial for demonstration experiments, can be constructed in a few minutes using pins, razor blade, cork and knitting
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