Celsius: Gwahaniaeth rhwng fersiynau

'''Celsius''' yw graddfa uned fesur ar gyfer tymheredd<ref name="AKA">{{cite web |url=http://www.britannica.com/EBchecked/topic/101689/Celsius-temperature-scale |title=Celsius temperature scale |quote=Celsius temperature scale, also called centigrade temperature scale, scale based on 0&nbsp;° for the freezing point of water and 100&nbsp;° for the boiling point of water at 1&nbsp;atm pressure. |accessdate=19 February 2012 |publisher=[[Encyclopædia Britannica]]}}</ref><ref>{{Cite web|url = http://chemistry.about.com/od/temperature/a/Celsius-Versus-Centigrade.htm |title = What Is the Difference Between Celsius and Centigrade?|date = December 15, Rhagfyr 2014|accessdate = March 16, Mawrth 2015|website = Chemistry.about.com|publisher = About.com|last = Helmenstine|first = Anne Marie}}</ref>. Fel uned o'r International Systems of Units (SI) mae'n cael ei ddefnyddio ymhob gwlad ar draws y byd heblaw am Unol Daleithiau America a Liberia. Fe'i enwir ar ôl yr astromegydd o [[Sweden]], [[Anders Celsius]] (1701–1744), a datblygodd graddfa tebyg ar gyfer mesur tymheredd. Yr enw swyddogol ar yr uned fesur oedd y ''Centigrade'' ond newidiwyd hyn yn 1948 mewn teyrnged i'w sefydlydd, Anders Celsius. Daw'r enw centigrade o'r Lladin ''centum'' a olygir 100 a ''gradus'' a olygir camau.