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Originally Posted by shadowind  I don't get how energy is mass, e=mc squared I know, but isn't the basic unit for energy kg * Meters squard divided by seconds squard, with out mass what is energy, isn't it just nothing over seconds squard? If we break apart the equation its kilograms * ((meters/seconds)*(meters/seconds)) which works, but i don't get the idea of pure energy. Yeah, I can see how ideas are just chemicals and electrical moments in the brain, but pure energy I don't get, rearrange the equation we get M=E/c squard im confuzeled. |
Ok, I think it goes like this:
Power = Force*Dist ---> e.g. Newton-Meters or Watts
Force = Mass*Accel
Power = Mass*Accel*Dist/Time
Accel = Dist/(Time*Time)
Power = Mass*Dist*Dist/(Time*Time*Time)
Energy = Power*Time ---> e.g. Kilowatt-Hours or Joules
Energy = Mass*Dist*Dist*Time/(Time*Time*Time)
Energy = Mass*Dist*Dist/(Time*Time)
Energy = Mass*(Dist/Time)*(Dist/Time)
Veloc = Dist/Time
Energy = Mass*Veloc*Veloc
The real genius of Einstein was that he realized you can plug the speed-of-light constant into the "Veloc" part of that equation to get the final result:
E=mc^2
in other words, "Energy is mass", or "Mass is energy" -- they are one in the same because the speed of light never changes.
Cool
So then ideas have mass. Yeah, we're on the same "wavelength" on that part.