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September 20, 2014

September 20, 2014

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

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! =]

- physics -
**bobpursley**, Thursday, March 12, 2009 at 5:57pmI know this is in your text. Are you studying your text, going thru the examples? From your questions, I get the impression your are not, just looking for formulas to plug and compute. Physics is much more gedunken that that.

d * sinTheta= m * lambda

where d is line spacing (1/130860), m is the order (m-1 here).

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