For closed systems with no external source or sink of energy, the first law of thermodynamics states that a system's energy is constant unless energy is transferred in or out by mechanical work or heat, and that no energy is lost in transfer. This means that it is impossible to create or destroy energy.
Grogan Name Meaning. reduced Anglicized form of Gaelic O Ã³ âgrugain grÃºgÃ¡in Descendantâ, of grugan grÃºgÃ¡n a personal name from a âdiminutiveâ, âofâ.grug GrÃºg anger fierceness Reduced ANGLICIZED Form âof gaelic Oâ, Ã³ gruagain gruagÃ¡in descendant of gruagan gruagÃ¡n a âpersonalâ. name from a diminutive of gruag hairlick on a circle in the chart to view Grogan birth and death records. An unusually short lifespan might indicate that your ancestors lived in harsh conditions. A short lifespan might also indicate health problems that were once prevalent in your family.
Curiously, in addition to the Old English word gÄr meaning spear; GÄr also has a corresponding rune (á¸) in the (Old English) Anglo-Saxon futhorc, which again has the meaning spear (and is transliterated into the modern letter G).ther surnames derived from Gerard and Gerald include: Gerrard, Garratt, Garret, Garred, Garrad, Garrard, Garrod, Jarrett, Jarratt, Jarrard, and Jerrold.