GEOG 2110L Lecture Notes - Radiant Energy, Electromagnetic Spectrum, Shortwave Radio
Document Summary
Energy: the ability or capacity to do work on some form of matter. * potential energy: the potential to do work; energy at rest. * heat energy: the sum total of all molecular motion of an object. * radiant energy: emitted by all objects with a temperature (t ) > 0 k = (-273 c) * first law of thermodynamics: in all physical & chemical changes, energy is neither created nor destroyed, but it may be converted from one form to another (law of. * second law of thermodynamics: when energy is changed from one form to another, some of the useful energy is always degraded to lower-quality, more dispersed and less useful energy. * light, heat, radio, x-rays, etc. all part of the electromagnetic spectrum or radiation * *all objects with a t > 0 k emit radiation. * hotter the emitting body, the shorter the wavelength.