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.
Sienna Name Meaning and History. From the Italian city of Siena, which gave its name to a reddish shade of brown. The name itself is possibly influenced by the word sienna, meaning orange-red. Pronounced: SEE en uh. Origin of Sienna Name. Latin. Gender of Sienna. Girl. Analysis of Sienna