Related Words

Ionizing Radiation: Very high energy electromagnetic radiation that strips electrons away from their normal locations in atoms and molecules.

Radiation Hybrid: A hybrid cell containing small fragments of irradiated human chromosomes. Maps of irradiation sites on chromosomes for the human, rat, mouse, and other genomes provide important markers, all . . . View Full Definition

Radiational Cooling: The cooling of the earth's surface and the adjacent air. Although it occurs primarily at night, it happens when the earth's surface suffers a net loss of heat due to outgoing radiation.

Radiational Tide: Periodic variations in sea level primarily related to meteorological changes such as the semi daily (solar) cycle in barometric pressure, daily (solar) land and sea breezes, and seasonal (an . . . View Full Definition

Terrestrial Radiation: Long wave radiation that is emitted by the earth back into the atmosphere. Most of it is absorbed by the water vapor in the atmosphere, while less than ten percent is radiated directly into space.

Radiation Fog: Fog that is created when radiational cooling at the earth's surface lowers the temperature of the air near the ground to or below its dew point. Formation is best when there is a shallow sur . . . View Full Definition

Radiation: The process by which energy is propagated through any medium by virtue of the wave motion of that medium. Electromagnetic radiation, which emits heat and light, is one form. Sound waves are another.

Anti-Radiation Missile (ARM): An anti-radiation missile is able to guide itself to destroy a radar using the signal transmitted by the radar. Destruction of the radar or intimidation of the operators is the most positive . . . View Full Definition

Adaptive Radiation: The development of a variety of species from a single ancestral form; occurs when a new habitat becomes available to a population. Evolutionary pattern of divergence of a great many taxa fro . . . View Full Definition

Electromagnetic Radiation: Also called radiation, it is waves of energy propagated though space or through a material media.