Abstract

The total number of photons emitted by a black body in thermodynamical equilibrium is found to be 1.5×10¹¹×T³ photons per sec. per cm². The total number of photons emitted by the sun in a period of about 20,000 years equals the total number of protons and neutrons contained in the sun.

© 1938 Optical Society of America

Radiation Laws Describing the Emission of Photons by Black Bodies

A. G. Worthing
J. Opt. Soc. Am. 29(2) 97-100 (1939)

Photon occupation numbers in black body radiation

L. Mandel
J. Opt. Soc. Am. 69(7) 1038-1039 (1979)

The Brightness of the Twilight Sky and the Density and Temperature of the Atmosphere

E. O. Hulburt
J. Opt. Soc. Am. 28(7) 227-236 (1938)

Selected Ordinates for Luminosity Computations*

David L. MacAdam
J. Opt. Soc. Am. 28(5) 163-166 (1938)

On the Calculation of Absorption Coefficients of Daylight in Natural Waters

R. T. Young
J. Opt. Soc. Am. 28(4) 95-99 (1938)