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What does the word LASER stand for ?...

What does the word LASER stand for ?

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LASER stands for Light Amplification by
Stimulated Emission of Radiation.
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PRADEEP-PHYSICAL WORLD AND MEASUREMENT-Very short Answer Questions
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  6. What is the smallest mass measured indirectly so far?

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  9. What is the order of mass fo uiverse.

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  10. Which technique is used for measuring age of rocks, fossils etc.

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  14. What is the difference between inertial mass and gravitational mass of...

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  15. Which is the world's most accurate clock ? What is its accuracy?

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  18. What is the order of mass of universe ?

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  19. What is the smallest mass measured indirectly so far?

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  20. Wlidt is the shortest time interval measured indirectly so far ?

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