8.3 Diffraction

Question 1

diffraction

Answer 1

the bending or spreading out of light as it passes through a narrow opening or around an obstacle

Question 2

single slit diffraction

Answer 2

When light passes through a narrow opening, the light waves seem to spread out (diffract)

(The opening must be the size of the wavelength or smaller to see true diffraction)

Question 3

slit lens system

Answer 3

If a lens is placed between a narrow slit and a screen, a pattern is observed consisting of a bright central light fringe with alternating dark and bright fringes on each side

Question 4

interference

Answer 4

when waves interact with each other, the displacements of the waves add together

Question 5

double split experiment

Answer 5

showed that the diffracted rays of light emerging from 2 parallel slits can interfere with one another

Question 6

diffraction gratings

Answer 6

A tool used to separate light of different wavelengths with high resolution