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                   brief explanation on wave optics

4 years ago


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                                        Electron microscopes can make images of individual atoms, but why will a visible-light microscope never be able to? Stereo speakers create the illusion of music that comes from a band arranged in your living room, but why doesn't the stereo illusion work with bass notes? Why are computer chip manufacturers investing billions of dollars in equipment to etch chips with x-rays instead of visible light?

The answers to all of these questions have to do with the subject of wave optics. So far this book has discussed the interaction of light waves with matter, and its practical applications to optical devices like mirrors, but we have used the ray model of light almost exclusively. Hardly ever have we explicitly made use of the fact that light is an electromagnetic wave. We were able to get away with the simple ray model because the chunks of matter we were discussing, such as lenses and mirrors, were thousands of times larger than a wavelength of light.

Huygens' principle

Huygens considered light to be a wave. He envisioned a wave crest advancing by imagining each point along the wave crest to be source point for small, circular, expanding wavelets, which expand with the speed of the wave. The surface tangent to these wavelets determines the contour of the advancing wave.
5 months ago

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my SC rank is 2717 and AIR is 40592 . Will get a seat in NITK? And on which rank is the seat alloted for SC students?
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Yaswanth Sai 4 months ago
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Soneel Verma 4 months ago
NITK is NIT karnataka ie Suratkal in manglore
PRAVEEN C NAIK 4 months ago
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Riddhi Gupta 2 months ago
Well I can contact on most of the Sunday's too but please give a satisfying reply...on second handed book … Need them urgently..
Riddhi Gupta 2 months ago
If you are confident within youu and have scored/prepared well this time, then you can try once more.
Vijay Mukati 4 months ago
Yes why not, and if you want to pursue your degree at some other equally reputed institution, then I may suggest to visit the official websites of a few reputed and esteemed institutions to ...
Ayushmaan Vardhan 4 months ago
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komalpreet one year ago
to make concent
komalpreet one year ago
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