Kris1120 said:Homework Statement
White light is spread out into its spectral
components by a diffraction grating.
If the grating has 2469 lines/cm, at what
angle does red light of wavelength 635 nm
appear in first order?
Answer in units of ◦.
Homework Equations
sin(theta) = m([tex]\lambda[/tex] /d)
The Attempt at a Solution
theta = inverse sin [( 1 * 635 e-9 m) / 24.69 m} = 1.4735 e -6 degrees
Kris1120 said:I see... its 1 / 2469 cm! Thank you!
A diffraction grating is an optical device consisting of a large number of parallel, equally spaced slits or grooves etched into a surface. It is used to separate and disperse light into its component wavelengths, similar to a prism.
A diffraction grating works by causing constructive and destructive interference of light waves as they pass through the slits or grooves. This results in the separation of the light into its component wavelengths, creating a spectrum.
The purpose of using a diffraction grating with red light is to separate and analyze the different wavelengths of red light, as well as any other colors present in the light source. This can provide valuable information about the composition and properties of the light source.
Red light is affected by a diffraction grating in the same way as any other color of light. It is dispersed into its component wavelengths, with longer wavelengths (such as red) being diffracted at a larger angle than shorter wavelengths (such as blue).
Yes, a diffraction grating can be used to create a specific color of light by selectively filtering out certain wavelengths of light. By adjusting the spacing and number of slits on the grating, specific colors and wavelengths can be emphasized or blocked.