A half-life is based on the decay rate of a particular isotope of a given element. It is a natural characteristic of that given radionuclide, and it is the amount of time it takes for a sample of it to decay to the point where half of it is gone and half the original sample remains.
English Meaning: The name Shepherd is an English baby name. In English the meaning of the name Shepherd is: Shepherd. Shakespearean Meaning: The name Shepherd is a Shakespearean baby name.In Shakespearean the meaning of the name Shepherd is: The Winter's Tale' The reputed father of Perdita is an old shepherd in the play.SoulUrge Number: 1. Expression Number: 11.n English the meaning of the name Shepherd is: Shepherd. Shakespearean Meaning: The name Shepherd is a Shakespearean baby name. In Shakespearean the meaning of the name Shepherd is: The Winter's Tale' The reputed father of Perdita is an old shepherd in the play. SoulUrge Number: 1. Expression Number: 11.
Callum /cal-lum/ [2 sylls.] as a boys' name means dove. Callum is a version of Calum (Scottish, Gaelic, Latin): transcription of Columba. Callum is also a form of Colum (Irish, Gaelic). See also Cal.hown below is the baby name popularity of Callum for boys. Callum was first listed in 2008 and reached its apex position of #729 in the U.S. in the year 2014. (Top 1000 Baby Names Records, 2014).