I don't understand physics so this is credible to me
what I want to know is where do all these stock photos and movies and tv shows get those awesome sharpies that allow you write on windows so crisply? whenever i write on a window with a sharp it always looks like shit.
I want satisfying movie sharpies.
Admetus@sopuli.xyz 3 weeks ago
The famous equation includes momentum so I always chuckle when they only show E=mc2
lvxferre@mander.xyz 3 weeks ago
You certainly know it, but sharing it for the ones who don’t:
The full equation is
E² = (pc)² + (m₀c²)²
where E, p, c, m₀ are respectively: energy, momentum, the speed of light, inertial mass. The(pc)²
part is kind of a big deal, because otherwise massless particles (like photons) would have no energy.If p = 0, then the equation simplifies into that famous E=mc².
Karyoplasma@discuss.tchncs.de 3 weeks ago
What I think is funny is that if you assumed E=mc^2 for all particles, then that would mean that red light is lighter than blue light.
Karyoplasma@discuss.tchncs.de 3 weeks ago
Einstein initially did write:
Does the inertia of a body depend upon its energy-content?, 1905
which got re-arranged to E=mc^2. Although he was aware that this doesn’t apply to systems in motion or mass-less particles such as photons.