881224
Refraction
- Refraction is the bending of light rays when
moving across a surface between two mediums
- e.g water to air
- or Air to glass
- e.g water to air
- When light speeds up, the angle of
refraction is larger than the angle of
incidence. if the light slows down it
is smaller
- light speeds up when going
through an object with more
transparency
- light slows down when going
through an object with less
transparency
- Light goes faster in air than it does in
water
- light speeds up when going
through an object with more
transparency
- As the light rays exit the material, it goes back to its normal
speed, so it comes out at the same angle it went in at, but its
target has changed.
- Lasers can be used as a more definite light source
- Next time you are in the bath,put a
pencil half vertically into your bath, what
happens?
- Now try at different
angles!
- Now try at different
angles!
- The difference in angles for different
object is called a refractive index
- Each object has its own, and we can use these to predict how much the angles
will change
- Each object has its own, and we can use these to predict how much the angles
will change
Want to create your own Mind Maps for free with GoConqr? Learn more.