Let me see if I got this right. A photon has no rest mass, and it travels at the speed of light. Knowing the wavelength of the photon will give us the momentum using the De Broglie relation. Now can we say that the momentum of the photon is = relativistic mass of the photon X the speed of light and from that know the relativistic mass, whatever that is?
My other question, take an electron instead. If we know the wavenumber of the electron how do we calculate the speed of the electron.
thanx for your reply
2. Homework Equations
3. The Attempt at a Solution
My other question, take an electron instead. If we know the wavenumber of the electron how do we calculate the speed of the electron.
thanx for your reply
2. Homework Equations
3. The Attempt at a Solution