black-body radiation
31thermal radiation — noun The electromagnetic radiation emitted from a body as a consequence of its temperature; increasing the temperature of the body increases the amount of radiation produced, and shifts it to shorter wavelengths (higher frequencies) in a manner… …
32Discovery of cosmic microwave background radiation — Bell Labs Horn Antenna in Crawford Hill, NJ In 1965 while using the Horn Antenna, Penzias and Wilson stumbled on the microwave background radiation that permeates the universe. This article concerns the accidental discovery of cosmic microwave… …
33electromagnetic radiation — noun radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge • Syn: ↑electromagnetic wave, ↑nonparticulate radiation • Hypernyms: ↑radiation • Hyponyms: ↑actinic… …
34nonparticulate radiation — noun radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge • Syn: ↑electromagnetic radiation, ↑electromagnetic wave • Hypernyms: ↑radiation • Hyponyms: ↑actinic… …
35cosmic background radiation — noun (cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin • Syn: ↑CBR, ↑cosmic microwave background radiation, ↑CMBR, ↑cosmic microwave… …
36Black supremacy — is a racist [ [http://dictionary.reference.com/browse/racist The word racist hatred or intolerance of another race or other races.] ] ideology based on the assertion that black people are superior to other racial groups.NatureIn Killing Rage:… …
37Black pepper — Pepper plant with immature peppercorns Scientific classification Kingdom: Plantae …
38Black-tailed prairie dog — At Wichita Mountains Wildlife Refuge …
39cosmic background radiation — Astron. electromagnetic radiation coming from every direction in the universe, considered the remnant of the big bang and corresponding to the black body radiation of 3 K, the temperature to which the universe has cooled. Also called cosmic… …
40Planck radiation — Electromagnetic radiation which is in the state of thermal equilibrium at some temperature T. Quantum statistics of bosons results in spectrum of distribution of energy to be described by Planck s black body radiation formula …
