Indeed, it's doesn't have "weight" per se, but don't forget that it still has momentum, and therefore can exert pressure as it bounces off something like a mirror. Photon pressure on the earth at noon is about equal to the gravitational force of one layer of hexane.
One of the freakiest designs I ever saw for a fusion bomb was a tritium rod encased in a shell of plutonium.
When the fission step was triggered, photons would press in on the tritium rod and the fusion stage would ignite purely from photon pressure... not heat... *pressure*.
One of the freakiest designs I ever saw for a fusion bomb was a tritium rod encased in a shell of plutonium.
When the fission step was triggered, photons would press in on the tritium rod and the fusion stage would ignite purely from photon pressure... not heat... *pressure*.
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