Recent content by kyle1320

Oook. I did label this with a [ B] tag. If you want to formalize things to help explain then feel free. I wouldn't really know where to start. Clearly I'm misunderstanding something fundamental here but it'd be nice to figure out what it is without needing courses in electromagnetics

Ok but if it is similar, shouldn't it stand to reason that the gravitational changes will propagate in all dimensions, including orthogonal to the spatial dimensions / in time only? So at a future point in time, the effect can be measured even if the object has since moved?

Perhaps my confusion is from thinking of the time dimension as similar to the physical dimensions. The concept of four-velocities made a lot of things make sense to me, but I suppose it isn't something that can be generally applied to other concepts like gravity.

So is the warping of "spacetime" really just warping of the spatial dimensions (that propagates outward at the speed of light)? And the effects of warped time only come as a result of something traveling through that warped space?

Can you explain more in what ways "they do"? I understand that "the place" isn't absolutely defined, so how would this be resolved?

Fair enough. Then suppose you have some mass in motion. The effect I'm suggesting could be measured as a "trail" left behind by the object, as its gravitational effect propagated through time in its old position. To be clear, I'm not asking about the propagation in space. I'm asking whether the...

I've been thinking about gravity. If mass contracts spacetime, can the warping effects be measured in time as well as spatial distance? For example -- say you had some matter that suddenly disappeared (please ignore the "how"). Measured in a fixed position, would the gravitational effect drop...

The ship and the fly are the cars, and the highway is the shore, as it is a stationary point of reference as to the velocity of the 2 cars.

"As Galileo observed, if a ship is moving relative to the shore at velocity v, and a fly is moving with velocity u as measured on the ship" "where s is the velocity of the fly relative to the shore."

Sorry for the double post, but: s = v+u / 1+(vu/c^2) s = actual velocity of fly (car 1) v = actual velocity of ship (car 2) u = velocity of fly (car 1) as calculated on ship (car 2) c = speed of light so: .5 = .5+u / 1+(.5u/1^2) .5 = .5+u / 1+.5u u = 0 So to each other, the...

-REMOVED- weird. I only took general physics, didn't even know about that. I just still have a lot of questions from that class. :P

Suppose 2 cars are on a highway going toward each other, each at half the speed of light. Can the driver of one car see the other car as it is going towards him, past him, and away from him? I imagine as the other car was coming towards him, it would get blue shifted out of the visible spectrum...

Hi, so imagine this: You have (for this theoretical situation) an entirely massless barber's pole. When it spins, the speed of the of the circumference of the pole is less than the speed the line appears to travel up (or down) the side of the barber's pole. If you were to spin the pole, could...