Reflection, Refraction, Dispersion, and Diffraction

a ray of light of sound bounces off new medium and travels back through original medium at the same but opposite orientation

Light waves or sound travel through new medium. Speed is unique to medium traveled through c=3 x 10^8 m/s

n=c/v c= speed of light in a vacuum v= speed of light in the medium n>1 always for medium except: nair=1 nwater=1.33

N1sin=N2sin angle of refraction> angle of incidence (light bend away from normal and travels faster) when light travels into a material with a higher index, it bends towards the normal

There is no bend of the object in the new medium

toward= lifeguard runs along sand then into water at angle

frequency is always constant when moving between medium

Angle of refraction of 90 degrees

light is traveling from a material with a high n toward a material with a lower n -the angle of incidence is relatively large

long wave length, does not change speed or bend as much when passes into a new medium compared to shorter wave lengths like violet

light passing through a prism are broken up and dispersed into their wavelength (create rainbow)

Waves encounter a barrier with a small hole/opening -wave through opening go through and others go back

waves that are parallel are amplified and become greater (peaks)

waves that cancel out and have a smaller amplitude

light = maxima (constructive) dark = minima (destructive)

A(sin) = m*lambda

When two apertures are present minima and maximum are much more in an order D(sin)=n*lambda -minima occur halfway from maxima