1. What is the use of pinhole? Is it necessaryto use it ?2. Define beam splitter.3. Why we use He-Ne laser to track the path of invisible laser like Nd:YAG laser?4. What are the advantages of alignment?

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Answered: 1. What is the use of pinhole? Is it…

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1. What is the use of pinhole? Is it necessary to use it ? 2. Define beam splitter.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter34: Frontiers Of Physics

Section: Chapter Questions

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The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.

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1. What is the use of pinhole? Is it necessary
to use it ?
2. Define beam splitter.
3. Why we use He-Ne laser to track the path of invisible laser like Nd:YAG laser?
4. What are the advantages of alignment?

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