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May 24, 2015

Homework Help: physics

Posted by physics on Thursday, March 12, 2009 at 4:59pm.

pleaase help me with this,
i'm very bad in physics, and i mostly don't understand any of this stuff...can anyone explain as well as show me how to do this

Monochromatic light from a helium-neon laser (wavelength=632.8 nm) shines at a right angle onto the surface of a diffraction grating that contains 130 960 lines/m. Find the angle at which one would observe the first-order maximum

Thank you VERY much! =]

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