2.90 x 10° nm · K Find the wavelength (in mm) of maximum intensity of the cosmic microwave background radiation observed today. Hint: Use Wien's law, Amay T mm What band of the electromagnetic spectrum is that in? (Examine the figure.) Visible light
2.90 x 10° nm · K Find the wavelength (in mm) of maximum intensity of the cosmic microwave background radiation observed today. Hint: Use Wien's law, Amay T mm What band of the electromagnetic spectrum is that in? (Examine the figure.) Visible light
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Transcribed Image Text:2.90 x 106 nm : K
Find the wavelength (in mm) of maximum intensity of the cosmic microwave background radiation observed today. ( Hint: Use Wien's law, Amay
mm
What band of the electromagnetic spectrum is that in? (Examine the figure.)
Visible light
Short wavelengths
Long wavelengths
4 x 107 5x 107 6x 107 7x 10meters
(400 nm) (500 nm) (600 nm) /(700 nm)
Wavelength (meters)
10 12
10 10
10
104
102
1
102
104
Gamma-
Micro-
Ultra-
violet
X-ray
Infrared
Radio
ray
wave
UHF VHF FM
AM
Opaque
Visual
window
Radio
window
Transparent
Short
Wavelength
Long
b
O microwave
O gamma ray
O ultraviolet
o o o
Opacity of
Earth's atmosphere
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