Energy of photon  [ENDORSED]


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diana_calderon_4L
Posts: 64
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Energy of photon

Postby diana_calderon_4L » Thu Oct 18, 2018 9:12 pm

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

Postby Chem_Mod » Thu Oct 18, 2018 9:21 pm

Yes, E = hv or E = hc/.

Catherine Kim 3K
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Joined: Fri Sep 28, 2018 12:26 am

Re: Energy of photon

Postby Catherine Kim 3K » Thu Oct 18, 2018 9:21 pm

Yes! You would use E=hv

g orloff 1J
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Re: Energy of photon

Postby g orloff 1J » Thu Oct 18, 2018 9:25 pm

use E=hv for energy of a photon

Henry_Phan_4L
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Re: Energy of photon

Postby Henry_Phan_4L » Sun Oct 21, 2018 7:48 pm

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



How did you get that second equation?

Yiting_Gong_4L
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Joined: Fri Sep 28, 2018 12:25 am

Re: Energy of photon

Postby Yiting_Gong_4L » Sun Oct 21, 2018 7:55 pm

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

ryanhon2H
Posts: 60
Joined: Fri Sep 28, 2018 12:28 am

Re: Energy of photon  [ENDORSED]

Postby ryanhon2H » Sun Oct 21, 2018 9:02 pm

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



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

Postby NatBrown1I » Sun Nov 04, 2018 11:06 pm

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.


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