Just some minor notes: At 9:26 AM 11/18/4, Jones Beene wrote: > ...This is a very small >amount of energy but with a mass, and a frequency, and >a wavelength equivalent. Mass equivalent: >1 eV/c = 1.783 x 10^-36 kg.
The above is a typo and should be 1 eV/(c^2) = 1.783 x 10^-36 kg. > >For comparison, the typical atmospheric O2 molecule >has a kinetic energy of about 0.03 eV. To convert a >particle's energy in electronvolts into its >temperature in Kelvin, multiply by 11,605. Another >important correlation of the electron volt is with >wavelength and frequency: >1 eV/hc = 806.6 mm-1 The above is neither a wavelength nor a frequency, and appears to be an accidental inversion. >From Plank's law E = h*nu, we have frequency nu = E/h = (1 eV)/h = 2.418x10^14 Hz = 241.8 THz >1 eV/h = 241.8 Thz terahertz. Right for frequency, but wavelength lambda is lambda = h/p = h/(E*c) = h*c/E = h*c/(1 eV) = 1.2398x10^-6 m or, since we already know frequency nu, we can just say lambda = c/nu = 1.2398x10^-6 m. Regards, Horace Heffner
