Quanta/s vs Einstein/s. what is the difference?

[eooxx]

could someone please explain to me the difference (if there is one) between quanta/s and einstein/s?
i'm doing some photochem calculations and the sources I've looked at seem to use both these units. some are from the 50's so maybe its a time period thing like optical density (past) and absorbance (more recent)?

 

[SpectraCat]

could someone please explain to me the difference (if there is one) between quanta/s and einstein/s?
i'm doing some photochem calculations and the sources I've looked at seem to use both these units. some are from the 50's so maybe its a time period thing like optical density (past) and absorbance (more recent)?

Have a look here:

http://en.wikipedia.org/wiki/Einstein_(unit)

and see if that answers your questions. If not, then come back and ask more specific questions.

 

[energydady]

ok, einstein use frame where no particle can reach speed of light (means his theory applied until particle reach light speed) and quanta is about light particles. so, it starts where einstein stop.