• 0 Posts
  • 75 Comments
Joined 1 year ago
cake
Cake day: July 14th, 2023

help-circle




  • But how do you apply this with Lorentz’ transformation (i.e. relativistic factors)? You cannot approach the speed of light without considering relativism. It is known that p = gamma * m * v where p is momentum, gamma is the gamma factor given by sqrt(1/(1 - (v^2/c^2))), m is mass and v is velocity. If you study the gamma factor, you’ll realize that it approaches infinite as v approaches c, the speed of light. Since we are actually dealing with light here, where v = c we are breaking the equation. Momentum cannot be defined for any mass which moves at the speed of light. It’s asymptotic at that speed.

    Also note that the same goes for E = mc^2. At relativistic speeds, also this equation needs to consider the gamma factor. So those classical equations break down for light.

    The answer is that photons don’t have mass, but they have energy. There is a good explanation a bit further up in this thread on how this is possible.
















  • I have never really been into anime/manga. However, I received the first book of Dragon Ball book back in the 00’s when the comic arrived in Norway as an add on to a Donald Duck magazine. And heck, I was so hooked. I read the book several times, and when the next book came out, I read that several times as well. For the next few years, every time a new book cmae out, I’d read all the books again. It was an amazing journey. I read the full series through dragon ball and dragon ball z as the only manga I ever got hooked on.

    Thanks for all the amazing sleepless nights under the duvet and a flashlight. Dragon Ball holds a very special place for me.