On 8/21/2025 10:35 PM, Alan Grayson wrote:
Yes, really. Just like a photon emitted here and absorbed there when here and there are receding from one-another, p is less there than it was here. You're such a troll.On Thursday, August 21, 2025 at 10:30:35 PM UTC-6 Brent Meeker wrote: On 8/21/2025 6:19 PM, Alan Grayson wrote:Two related questions; if photons lose energy as the universeexpands, where does the lost energy go?You didn't answer my question as to where the energy of a ball goes if you throw it into a moving car.I did. The two situations aren't comparable since the ball's kinetic energy is completely consumed when it comes to rest when being caught by the observer at rest, but not completely consumed when still moving when caught by the moving observer. So the energy isn't really "lost" in the latter case, just not consumed. That's one way to look at it, and you offered another, so I didn't think the issue was unresolved. AGAnd second; why don't the wave lengths of material particles, such as electrons, also decrease in energy as well, under thesame circumtance? AGThey do. The de Broglie wave length is h/p.Really? Has anyone theorized that the electron's wavelength becomes longer as the universe expands, which would require p to decrease? AG
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