posted by physics .
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! =]
I know this is in your text. Are you studying your text, going through 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).