i meant the equation which i have now attached in this postThat's it. You need to use this more general equation, which works for all particles, including massless photons:
[tex] E^2 = mc^4 + p^2c^2 [/tex]
(p is the momentum of the particle.)
What does your calculator say if you type in 0/0? What does it say if you take the square root of -1?try typing 1/0 into a calculator - its undefined. if you think about it this way, even if you had an infinite number of "zeros" you cannot get 1 - hence its not infinity but undefined.
likewise with 0/0, you might think that the answer is infinity as the other guys said there are many answers - infinite answers not just infinity. 1 x 0 is 0. 2 x 0 is 0. 3 x 0 is 0 and so on using this same logic.
so back to my original question, although its been answered, using that particular equation, photons must have an undefined amount of energy
If you just ask the question, what is 0/0, there are an infinite number of answers, but that doesn't mean that your equation for the energy of a massless particle has an infinite number of answers, it just means that you need to determine the answer some other way.i just realised i misunderstood your point. i think we meant the same thing. 0/0 is indeterminate because it has an infinite number of answers - i.e. any real number. what i meant to say is that it is not enough to say the answer is 1, 0, or infinity