Review Blackbody Radiation

1
Review Blackbody Radiation
2
The electromagnetic spectrum
Infrared (IR)
3
The electromagnetic spectrum
Ultraviolet (UV)
Infrared (IR)
4
The electromagnetic spectrum
X rays
Infrared (IR)
Ultraviolet (UV)
5
The electromagnetic spectrum
Radio waves, Radar and microwaves
Infrared (IR)
X rays
Ultraviolet (UV)
6
The electromagnetic spectrum
Ultraviolet (UV)
Infrared (IR)
X rays
Radio waves, radar and microwaves
7
The electromagnetic spectrum
Ultraviolet (UV)
Infrared (IR)
X rays
Radio waves, Radar and microwaves
8
The electromagnetic spectrum
0.4 ??m
1 m
0.7 ??m
0.00003 ??m
300 ??m
Ultraviolet (UV)
Infrared (IR)
X rays
Radio waves, Radar and microwaves
9
The electromagnetic spectrum
Terrestrial radiation
Solar radiation
1 m
0.4 ??m
0.7 ??m
300 ??m
0.00003 ??m
Ultraviolet (UV)
Infrared (IR)
X rays
Radio waves, Radar and microwaves
10
The electromagnetic spectrum
280 K
5800 K
Terrestrial radiation
Solar radiation
1 m
0.4 ??m
0.7 ??m
300 ??m
0.00003 ??m
Ultraviolet (UV)
Infrared (IR)
X rays
Radio waves, Radar and microwaves
11
Emissions of a blackbody

• Use the applet energy curves to review
• Stefan-Boltzmann Law
• Wiens Law