Theory of Heat by Max Planck - 1957, Second edition. Introduction to Theoretical Physics". Graphs and charts throughout. Translated by Henry L Brose. Planck's law describes the spectral density of electromagnetic radiation emitted by a black body in thermal equilibrium at a given temperature T, when there is no net flow of matter or energy between the body and its environment. Condition: Hardcover is in very good condition. Light brown.cloth with gilt titles to spine. Pages have slight foxing, tanning and minor thumbing. Previous owner's to front endpaper and Boards have some moderate edge wear, with slight bumping to corners and minor bumping to spine ends. 301 pages, dimension: 22.0 x 15.0 cm. Please see photos for detail. Ship with tracked and full insure.