E46Fanatics - View Single Post

cowmoo32 · 10-18-2011, 10:10 AM

Asking what is vibrating is like asking through what does a light wave propagate, or, What is the aether? I still have a hard time wrapping my head around the fact that spacetime isn't a physical entity, per se, but a metric of curvature. It is a purely mathematical construct, like a wavefunction. I started a fairly lengthy discussion on the physics forums with that very question and it seems there still isn't a definitive answer outside of the mathematical description. Well, it actually started with me asking just what light really is, but that led to a discussion on spacetime.

http://physicsforums.com/showthread.php?t=510107

10-18-2011, 10:10 AM	#490
cowmoo32 drunken science Join Date: Jul 2003 Location: Raleigh, NC Posts: 5,512 My Ride: Trek 1.2 View My Garage	Asking what is vibrating is like asking through what does a light wave propagate, or, What is the aether? I still have a hard time wrapping my head around the fact that spacetime isn't a physical entity, per se, but a metric of curvature. It is a purely mathematical construct, like a wavefunction. I started a fairly lengthy discussion on the physics forums with that very question and it seems there still isn't a definitive answer outside of the mathematical description. Well, it actually started with me asking just what light really is, but that led to a discussion on spacetime. http://physicsforums.com/showthread.php?t=510107 __________________ flickher