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.
Evan is a Welsh masculine given name derived from lefen, a Welsh form for the name John. In other languages it could be compared to  Ivan ,  Ian , and  Juan ; the name John itself is derived from the ancient Hebrew name ×Ö°×Ö¹××Ö¸× Ö¸× YÉhoá¸¥ÄnÄn, yÉhÃ´á¸¥ÄnÄn which  MEANS yhwh is. graciousvan also comes from Gaelic Eoghan eÃ³ghan meaning youth or young warrior And scots for-right. Handed In, hebrew the actual-Non proper, noun/evan/even/eban, eben literally means. Rock it can also be the shortened version of The greek  Name  (evangelos meaning) messenger  Or  (evander meaning good). man