Planck's law In 1880, André-Prosper-Paul Crova published a diagram of the three-dimensional appearance of the graph of the strength of thermal radiation as a function of wavelength and temperature. He determined the spectral variable by use of prisms. He analyzed the surface through what he called "isothermal" curves, sections for a single temperature, with a spectral variable on the abscissa and a power variable on the ordinate. He put smooth curves through his experimental data points. They had one peak at a spectral value characteristic for the temperature, and fell either side of it towards the horizontal axis. Such spectral sections are
What Is a Rumpletilskin? What Is a Rumpletilskin? What Is a Rumpletilskin? is the first and only album by hip hop group Rumpletilskinz, released on July 13, 1993, on RCA Records and produced by the group's producer, R.P.M. The album failed to make it to any of the "Billboard" charts, but two singles did, "Attitudes" and "Is It All Right?" Both made it to #24 on the Hot Rap Singles. This release received extensive national independent retail promotion through Poindexter International Marketing & Promotions, which was employed by RCA Records. It was also one of the first projects managed by James "DJ Ras J"