Space/Science — HabitableZone

Space/Science » in reply to Why isn't light speed infinite?

mind-bending assertion about lightspeed

I'm still reeling from something I read weeks ago in Brian Greene's The Elegant Universe, namely Einstein's assertion that all objects in the universe are always moving at lightspeed, if one combines it's motion through space and it's "motion" through time.

So...if a photon, moving by definition at lightspeed, hasn't aged a bit since its creation, then to the photon, wouldn't its own speed seem infinite? Huge distances travelled and no time elapsed...

And I seem to recall reading a few weeks ago about physicists who'd slowed down a photons velocity, and had hopes of stopping one in its tracks...anyone have more info on that? (Seems to me I read about it in a computer mag, the article stating that the research could revolutionize computing...)

Log in or register to post.

The whole thread (13 posts)