E=hv vs E=hf


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Catherine Bubser 2C
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E=hv vs E=hf

Postby Catherine Bubser 2C » Sun Nov 01, 2020 1:36 pm

Why is frequency denoted as v in the first equation? I understand that these are the same equation and was curious as to why some equations use v.

Charisma Arreola 2F
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Re: E=hv vs E=hf

Postby Charisma Arreola 2F » Sun Nov 01, 2020 1:48 pm

I think it is just a matter of what is given in a test or problem.

Isabella Cortes 2H
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Re: E=hv vs E=hf

Postby Isabella Cortes 2H » Sun Nov 01, 2020 1:50 pm

I believe that E=hv is occasionally denoted as E=hf to avoid confusion as v can also mean velocity for other equations.

Nicole Attiq 3D
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Re: E=hv vs E=hf

Postby Nicole Attiq 3D » Sun Nov 01, 2020 1:57 pm

The v is the greek letter "nu". Like the previous person said, we only use the second equation so as to not confuse velocity with frequency. However, most of the time we use the equation with the nu.

Gwendolyn Hill 2F
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Re: E=hv vs E=hf

Postby Gwendolyn Hill 2F » Sun Nov 01, 2020 2:01 pm

I personally prefer to use f when I'm writing down problems, just because I don't want to get mixed up between the v for frequency and the V for velocity

Gian Boco 2G
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Re: E=hv vs E=hf

Postby Gian Boco 2G » Sun Nov 01, 2020 4:48 pm

I think the distinction is based mostly on context.

Ralph Zhang 2L
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Re: E=hv vs E=hf

Postby Ralph Zhang 2L » Sun Nov 01, 2020 4:50 pm

The "v" is technically not a v, it is a Greek letter. If they use f for frequency then its probably to differentiate itself based on the context.

Justin Zhang_1A
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Re: E=hv vs E=hf

Postby Justin Zhang_1A » Sun Nov 01, 2020 4:52 pm

V stands for velocity, and the symbol for frequency is the Greek letter nu, which is like an italicized v, so sometimes f is used to avoid confusion.

Irene Nguyen 2J
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Re: E=hv vs E=hf

Postby Irene Nguyen 2J » Sun Nov 01, 2020 4:55 pm

I believe it's for better visual distinction as frequency (v as in nu) and velocity (v) share the same character. There's a symbol (a fancier looking v, honestly) to distinguish between the two, but the forum won't let me use it in a post :)

Ansh Patel 2I
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Re: E=hv vs E=hf

Postby Ansh Patel 2I » Sun Nov 01, 2020 4:57 pm

Hi! I believe it is just by preference; Using v (Greek letter, not velocity) and f is interchangable.

Jacob Schwarz-Discussion 3I
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Re: E=hv vs E=hf

Postby Jacob Schwarz-Discussion 3I » Sun Nov 01, 2020 11:29 pm

They just don't want to confuse it with velocity so sometimes they use E=hf

Ariana Flores 3F
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Re: E=hv vs E=hf

Postby Ariana Flores 3F » Sun Nov 01, 2020 11:33 pm

Like others have said, there is no difference!

Kiara Phillips 3L
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Re: E=hv vs E=hf

Postby Kiara Phillips 3L » Thu Nov 05, 2020 8:22 pm

Use whatever one you prefer, they are interchangeable!

Brian Bui 3H
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Re: E=hv vs E=hf

Postby Brian Bui 3H » Thu Nov 05, 2020 8:43 pm

As others said, they are interchangeable! However v (Greek letter) for frequency has a little curve on the left while v for velocity is just straight, if that helps. Very nit-picky details!

Michelle Nguyen 3F
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Joined: Wed Sep 30, 2020 10:03 pm

Re: E=hv vs E=hf

Postby Michelle Nguyen 3F » Fri Nov 06, 2020 9:24 pm

The difference usually depends on the context of the problem. Sometimes when v is used as velocity, f is used for frequency.

Gicelle Rubin 1E
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Re: E=hv vs E=hf

Postby Gicelle Rubin 1E » Sat Nov 07, 2020 6:34 pm

Brian Bui 2A wrote:As others said, they are interchangeable! However v (Greek letter) for frequency has a little curve on the left while v for velocity is just straight, if that helps. Very nit-picky details!


Thanks for this! I probably would not have noticed that tiny detail.


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