The Electromagnetic Spectrum. The electromagnetic (EM) spectrum is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes â the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation.
Top definition. fathom. 1. a unit of mesuring distance that is 6 feet or about equal to the length of a grown man's outstreched arms. 2. to contemplate or think about with effort. 1.the shipwreck is about 10 fathoms down. 2.who but the almighty can fathom the depths of the abyss.
- âBy God!âBelay - âStop that, Now!âBilboes-Leg irons attached to the deck of a ship.Bilge-The dirtiest, smelliest and lowest part of a ship or to talk rubbish.Bilge rat-A rat that lives in the dirtiest, smelliest and lowest part of a ship.