1. Physics
2. Light, Vision & Optics
3. Propagation of Light
4. Light Diffraction
5. Grating
6. 17873

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

When a grating is used with light that has a wavelength of 621 nm, a third-order maximum is formed at an angle of 18.0°. How many lines per centimeter does this grating have?
answer in lines/cm