Showing 1-5 out of 5
Lec34.pdf-Blackbody Radiation Curves http://common...
Lec34.pdf-Blackbody Radiation Curves http://commons.wikimedia.org/wiki/File:BlackbodySpectrum_loglog_150dpi_en.png ! Different
Lec34.pdf-Blackbody Radiation Curve...
Lec34.pdf-Blackbody Radiation Curves http://commons.wikimedia.org/wiki/File:BlackbodySpectrum_loglog_150dpi_en.png ! Different
Page 1
Blackbody Radiation Curves
http://commons.wikimedia.org/wiki/File:BlackbodySpectrum_loglog_150dpi_en.png
!
Different temperatures produce different EM spectra at equilibrium
!
Every colour sees an intensity boost, with increasing temperature
!
Blue end sees the most change, so the peak shifts towards shorter
λ
Page 2
Cosmic microwave background
!
Holmdel Horn Antenna: Bell Telephone Laboratories, designated a National
Historic Landmark in 1988
!
1965: while using this antenna, Penzias and Wilson discovered the
microwave background radiation that permeates the universe.
http://en.wikipedia.org/wiki/File:Horn_Antenna-in_Holmdel,_New_Jersey.jpeg
Page 3
Thermal Radiation (cnt’d)
so we can identify from the integrals: