# The Law of Reflection states

```2/28/2013
Mr. Sudbury
Reflection is when a wave reaches a boundary
between two media, some or all of the wave
bounces back.
The reflection creates a virtual image. Called
a virtual image because the light doesn’t start
there.
In a plane mirror image size and distance is
equal to the true size and distance of the
object.
Mr. Sudbury
The Law of Reflection states that the angle of
incidence is equal to the angle of reflection.
a) convex mirror makes the image appear smaller.
B) concave mirror makes the image appear larger.
1
2/28/2013
The colors we see are from rays of the light
reflecting off of the object.
The color that something appears to be is
because it reflects that λ of light.
Newton passed sunlight (white light) through
a prism and saw the color spectrum
(ROYGBIV).
Refraction – The change in direction of a wave as it
crosses a boundary between two media in which
the wave travels at different speeds.
When light waves travel through a different
medium. Their speed changes, so they bend.
2
2/28/2013
The separation of light into colors according
to their frequency.
Rainbows
EM Spectrum (freq, wavelenght)
Velocity
Transparent vs opaque
Diffraction
Rays
Polarization
Color
Reflection
Refraction
3
```