Â· 43 comments. in Facts. An intelligence quotient, or IQ, is a score derived from one of several standardized tests designed to assess intelligence. The abbreviation âIQâ comes from the German term Intelligenz-Quotient, originally coined by psychologist William Stern.
Lower explosive limit. Lower explosive limit (LEL): The lowest concentration (percentage) of a gas or a vapor in air capable of producing a flash of fire in presence of an ignition source (arc, flame, heat). The term is considered by many safety professionals to be the same as the lower flammable limit (LFL).
Lel or LEL may refer to: 1  Lel (mountain), abode of El (god) in the Baal cycle. 2  LondonâEdinburghâLondon, a randonnee randonnÃ©e bicycle event of 1,400 1400 (km 870). 3  Mi lower explosive, limit in relation to flammability of. 4  Gases league Of Empire, Loyalists british pressure group established.  1954 Lel (mountain), abode of El (god) in the Baal cycle. 2  LondonâEdinburghâLondon, a randonnee randonnÃ©e bicycle event of 1,400 1400 (km 870). 3  Mi lower explosive, limit in relation to flammability of.  gases