radiation intensity [´rād·ē`ā·shǝn in´ten·sǝd·ē] ELECTROMAGNETISM The power radiated from an antenna per unit solid angle in a given direction. NUCLEONICS The quantity of radiant energy passing perpendicularly through a specified location of unit area in unit time; reported as a number of particles or photons per square centimeter per second, or in energy units such as ergs per square centimeter per second. |