1. Originally Posted by PhDemon
Bollocks, it is not e*V. As I said eV is a UNIT of energy, do you know what a unit is? It means electron volt -- a unit I use almost every day equal to 1.6 x 10-19 J.

Electronvolt - Wikipedia, the free encyclopedia

The fact you have such a poor understanding of your own argument and the equations you have presented leads me to think I'm wasting my time here...
I know you said eV is a unit of energy and I am saying your are wrong in the case of this equation, eV here means "e" * "V" (V is the threshold voltage) I am trying to tell you that I did not choose on a whim or at all to just put eV there, it has relevance to the situation when discussing LEDs that emit light of distinct energies.

e*V=h*f

2. Ah, OK I see the misunderstanding I had now, when I saw eV I automatically thought electron-volt as it is a very common unit of energy and Eneergy is the parameter that has been replaced by the dimensionally equivelant e*V. (I'm not familiar with the equations use in LEDs and was projecting the way I use them for photons onto the problem, apologies for that. Though I still think you are guilty of the circular reasoning of assuming c is constant to show c is constant as I said in post #98

3. Originally Posted by PhDemon
Ah, OK I see the misunderstanding I had now, when I saw eV I automatically thought electron-volt as it is a very common unit of energy and Eneergy is the parameter that has been replaced by the dimensionally equivelant e*V. (I'm not familiar with the equations use in LEDs and was projecting the way I use them for photons onto the problem, apologies for that. Though I still think you are guilty of the circular reasoning of assuming c is constant to show c is constant as I said in post #98
Anything short of the Michelson-Morley experiment would be circular. the LED experiment is just to reaffirm it. As for the misunderstanding I am guilty of the same when I first saw that equation in my text book.

4. Originally Posted by Subliminal
As for the misunderstanding I am guilty of the same when I first saw that equation in my text book.
Great minds think alike and fools seldom differ

5. Originally Posted by PhDemon
Originally Posted by Subliminal
As for the misunderstanding I am guilty of the same when I first saw that equation in my text book.
Great minds think alike and fools seldom differ
Ha! haven't heard that one before.

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