AMA | September 2024

8089.882 - 8111.141 Sean Carroll

If you have a charge minus one particle like the electron, you're guaranteed to have a charge plus one particle antiparticle like the positron. But particles like gravitons and photons carry no conserved quantities that could be negative, so they don't really have antiparticles. Jeff Babon says, it's been very interesting listening to your views on entropy and the heat depth of the universe.