An electromagnetic pulse (EMP) is an intense burst of electromagnetic (EM) energy caused by an abrupt, rapid acceleration of charged particles, usually electron s. An EMP can contain energy components over a large part of the EM spectrum, from very-low-frequency ( VLF) radio to ultraviolet ( UV) wavelength s. A lightning strike produces a localized EMP that gives rise to large electrical current s in nearby wires.
Definition of italic. 1  1a : of or relating to a type style with characters that slant upward to the right (as in âthese words are italicâ) â compare romanb : of or relating to a style of slanted cursive handwriting developed in the 15th and 16th centuries. 2  2 capitalized : of or relating to ancient Italy, its peoples, or their Indo-European languages.
The definition of an icon is a graphic representation of something, a person or thing that is symbolic or is a noted figure. 1  An example of an icon is the home or finder icon on your computer.  An example of an icon is a beautiful celebrity who is the best example of the western ideal of beauty.