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.
Meaning of Kellan. Irish name. In Irish, the name Kellan means-powerful. Other origins for the name Kellan include-Irish, Gaelic, Gaelic.The name Kellan is most often used as a boy name or male name.Irish Name Meaning-powerful. Origin-Ireland.ther origins for the name Kellan include-Irish, Gaelic, Gaelic.The name Kellan is most often used as a boy name or male name.
The name Evan is of Welsh origin. The meaning of Evan is G-d is gracous. It is also of Scottish origin, where its meaning is born of the yew tree, youth and Hebrew origin, where its meaning is stone, rock. Evan is used as both a boys and girls name. It consists of 4 letters and 2 syllables and is pronounced E-van.