1. Which band of the electromagnetic spectrum have:
1. the longest wavelength?
2. the shortest wavelength?
3. the greatest amount of energy?
4. the least amount energy?
5. wavelengths just below what humans can see?
6. wavelengths just above what humans can
see?
1. Radio
2. Gamma
3. Gamma
4. Radio
5. Infrared
6. UV

2. ReviewReview
Infrared light
Night vision
Thermal imaging

3. Visible LightVisible Light
ROY G BIV
Red has the longest
wavelength, lowest
energy
Violet has the
shortest wavelength,
highest energy

6. Visible LightVisible Light
Every object absorbs
some visible light and
reflects some visible
light
Mirrors reflect almost
all visble light

7. Visible LightVisible Light
In order for you to see
an object, visible light
must be reflected off it
And meet your eye

8. Visible LightVisible Light
White reflects all
colors (ROY G BIV)
Black absorbs all
colors (ROY G BIV)
Red?
Reflects only red

9. Visible LightVisible Light
It is possible
to bend
visible light
waves in
such a way:
1.That the
object itself
looks bent
Refraction

10. Visible LightVisible Light
2. The object
appears to be in a
different place

12. Visible LightVisible Light
3. The object may
not be visible at all!

13. Water Tank
Incident wave
Reflected wave
Transmitted wave
Refracted wave