Light Flashcards
What is the definition of a plane mirror ?
A mirror which is completely flat
What is the ray of incidence ?
The ray thta is shined on mirror
What is the ray of reflection ?
The reflection off the mirror
True or false?
The angle of incodence is equal to the angle of reflection
True
What is refraction ?
When light changes direction through two transparent materials
Why does refraction occur ?
Because the light changes speed
What happens when light enters the glass in refraction ?
It slows down
What happens when light passes from glass to air ?
It speeds up
In what materials does light travel slower in ?
Denser materials
What is the normal
An imaginary line at 90 degrees from surface
What is dispersion ?
When light is split into a spectrum of colours
How are different colours of light refracted different amounts ?
The wave length of the light decides how much the light is bent
True or false ?
The longer the wave length the least bent the light is
True
What are the colours in a spectrum of light ?
The colours of a rainbow
Which colour is refracted the most ?
Violet
