- #1
Aspchizo
- 26
- 0
In case I'm wrong, the formula for energy of a photon is E=hf.
Or E=hc/λ, because f=c/λ.
Basically the second formula is just in case you don't know frequency so it crams the equation for that into the equation for energy.
When I use E=hc/λ the units I get are...
kg*m2/s3
What I did was... A photon of red light, has a wavelength of like 700nM, so...
(6.626×10-34kg*m2/s2) (3x108m/s) / 7×107m
= 2.84×1019kg*m2/s3
I thought the answer would be in Joules, which is kg*m2/s2, so I must be missing something... Why the extra unit of time.
Or E=hc/λ, because f=c/λ.
Basically the second formula is just in case you don't know frequency so it crams the equation for that into the equation for energy.
When I use E=hc/λ the units I get are...
kg*m2/s3
What I did was... A photon of red light, has a wavelength of like 700nM, so...
(6.626×10-34kg*m2/s2) (3x108m/s) / 7×107m
= 2.84×1019kg*m2/s3
I thought the answer would be in Joules, which is kg*m2/s2, so I must be missing something... Why the extra unit of time.