100/(2n) Half-life (abbreviated t1â2) is the time required for a quantity to reduce to half its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo, or how long stable atoms survive, radioactive decay.
Baby names meanings search results: The name Kellan is a baby boy name. The name Kellan comes from the Gaelic origin. In Gaelic The meaning of the name Kellan is: Slender; fair.he name Kellan is a baby boy name. The name Kellan comes from the Gaelic origin. In Gaelic The meaning of the name Kellan is: Slender; fair.
What does Evan mean? [ 2 syll. e-van, ev-an ] The baby boy name Evan is also used as a girl name, but the use for boys is much more common. It is pronounced in English as EHV-ahN â . Evan is used chiefly in the Scottish, English, and Welsh languages, and it is derived from Celtic and Hebrew origins. The name is an Anglicized form of Iefan, which is from Ieuan (Old Welsh).