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### E=hv

Posted: Sat Oct 13, 2018 6:55 pm
In the equation E=hv, I know E stands for energy, but specifically what energy? Like threshold energy or energy of the photons?

### Re: E=hv

Posted: Sat Oct 13, 2018 7:01 pm
E stands for energy per photon.

### Re: E=hv

Posted: Sat Oct 13, 2018 7:07 pm
The equation tells us that E is the energy of light, which is also called a photon.

### Re: E=hv

Posted: Sat Oct 13, 2018 11:02 pm
In this equation, E is the energy of light (photons) in Joules.

### Re: E=hv

Posted: Sat Oct 13, 2018 11:26 pm
What does a photon of energy mean?

### Re: E=hv

Posted: Sat Oct 13, 2018 11:47 pm
Soyoung Park 1H wrote:What does a photon of energy mean?

A photon is the smallest measurable unit of electromagnetic energy (light)

### Re: E=hv

Posted: Sun Oct 14, 2018 1:05 am
Keep in mind that a photon is always positive.

### Re: E=hv

Posted: Sun Oct 14, 2018 1:20 am
I've also seen E=hf once, does anyone know if that is the same as E=hv?

### Re: E=hv

Posted: Sun Oct 14, 2018 9:08 am
Tamera Scott 3L wrote:I've also seen E=hf once, does anyone know if that is the same as E=hv?

v is frequency, so I believe f would just be another way to denote frequency.

### Re: E=hv

Posted: Sun Oct 14, 2018 12:50 pm
E is the energy of light, which is measured in photons. A photon is the quantum of electromagnetic radiation.

### Re: E=hv

Posted: Sun Oct 14, 2018 2:05 pm
Tamera Scott 3L wrote:I've also seen E=hf once, does anyone know if that is the same as E=hv?

I believe that f and v both symbolize frequency. I think that v is just more commonly used in chemistry while f is more preferred in physics.

### Re: E=hv

Posted: Tue Oct 16, 2018 1:12 am
Since electromagnetic radiation acts like particles, E in this equation stands for the energy per photon.

### Re: E=hv

Posted: Tue Oct 16, 2018 12:15 pm
yes, E represents the amount of energy per photon. The units for E is Joules.

### Re: E=hv

Posted: Tue Oct 16, 2018 2:46 pm
Tamera Scott 3L wrote:I've also seen E=hf once, does anyone know if that is the same as E=hv?

v is the symbol for frequency, so both equations are equivalent