Energy of photon [ENDORSED]

$E=hv$

diana_calderon_4L
Posts: 64
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Energy of photon

When it comes to energy of a photon, there is a specific equation to calculate it right??

Chem_Mod
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Re: Energy of photon

Yes, E = hv or E = hc/$\lambda$.

Catherine Kim 3K
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Re: Energy of photon

Yes! You would use E=hv

g orloff 1J
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Re: Energy of photon

use E=hv for energy of a photon

Henry_Phan_4L
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Re: Energy of photon

Chem_Mod wrote:Yes, E = hv or E = hc/$\lambda$.

How did you get that second equation?

Yiting_Gong_4L
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Re: Energy of photon

When would we use E=ch/wavelength instead of E=hv, vice versa?

ryanhon2H
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Re: Energy of photon  [ENDORSED]

Henry_Phan_3B wrote:
Chem_Mod wrote:Yes, E = hv or E = hc/$\lambda$.

How did you get that second equation?

You substitute for v in E=hv to get E=hc/λ

Use the light equation c = vλ, solve for v to get v = c/λ, and substitute back into E=hv for v

NatBrown1I
Posts: 62
Joined: Fri Sep 28, 2018 12:17 am

Re: Energy of photon

Depending on the specific variables that you have you can use either the equation:
E= hv
or
E = hc/ lambda

The second equation is just a combination of the first equation and lambda = c/v.