light and waves Flashcards
red is the…
least refracted colour
violet is the…
most refracted colour
internal refraction only occurs when…
light is going from more dense to less dense materials
the more dense a material is the…
smaller the critical angle
constructive interference
is when the waves collide(meet in phase)
destructive interference
is when the waves interfere but move apart(meet out of phase)
when light passes from a denser medium to a less dense medium, it …
bends away from the medium(both speed and wavelength also increase, but frequency doesn’t change)
critical angle
The angle of incidence that produces
an angle of refraction of 90°
Increasing the distance between the laser and the grating…
decreases the distance between the observed maxima
diffraction and interference prove that light is…
a wave
line spectra and the photoelectric effect prove that light is…
a particle
both waves and particles(for light) have…
refraction and reflection
continues spectrum
only theoretical as a full rainbow has never been seen before
emission lines
black background with lines of color going through it
absorption lines
rainbow with black lines going through it
