|MLA Citation:||Bloomfield, Louis A. "Question 919"|
How Everything Works 16 Jan 2018. 16 Jan 2018 <http://howeverythingworks.org/print1.php?QNum=919>.
In contrast, a fluorescent lamp tries to produce light without heat. It collides electrons with mercury atoms to produce an atomic emission of ultraviolet light. This ultraviolet light is then converted to visible light by the layer of white phosphor powders on the inside of the lamp's glass envelope. In principle, this whole activity can be performed without creating any thermal energy. However, many unavoidable imperfections cause the lamp to convert some of the electric energy it consumes into thermal energy. Nonetheless, the lamp only becomes warm rather than hot.