Red Lab Laser
physics question?
You find two unlabelled diffraction gratings in your lab. From purchase records, you know that one grating has 5000 lines/cm, while the other has 10 000 lines/cm.
Given the following equipment, describe how you would determine which is the grating with 10 000 lines/cm:
•Red laser
•detection screen
•the two unknown diffraction gratings
describe what difference you would observe.
http://www.physics.smu.edu/~scalise/emmanual/diffraction/lab.html
[Observe the image, see where sin(theta) lies and use the diffraction grating equation mentioned. How does sin(theta) change for different grating constants? Laser light is supposed to be of a single, constant wavelength]
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211mW Red Lab Laser Popping A Balloon
