“Principles of Modern Physics.”

“Principles of Modern Physics.”

1. Black-Body Radiation

   • In Thermal Equilibrium
   • Independent of the material
   • Distributed across all wavelengths
   • As Temperature Increases
     • Maximum goes towards shorter wavelengths

2. Planck’s Hypothesis

   • Energy is quantized
   • Photons
     • Integer múltiples of the Planck's constant

3. Electromagnetic Spectra of a Black-Body

   • Ultra-Violet
   • Infrarred
   • Visible Spectrum
   • X-rays
   • Radio Waves
   • Uses normal distribution

4. Planck’s law

   • Wien’s displacement law
     • Maximum of the Spectral Distribution for a given temperature
   • Stefan-Boltzmann Law
     • Total power emitted by unit area
   • Kirchhoff’s law for radiant flux
     • Monochromatic absorption equals monochromatic emission
   • As función of
     • Wavelength
     • Wavenumber
     • Frequency
   • In units of
     • Power per unit area
     • Power per unit frequency
     • Photons per unit area per unit wavelength
     • Power per sterradian

5. Leighton, R.B., 1959. “Principles of Modern Physics.” McGraw-Hill, pp. 60-65.