Recent content by sqljunkey

I heard dTau measures time for the person traveling on a worldline. If the person traveling on that world line chalked marks on the world line every 1 minute, would those intervals be the same distance from each other?

so if I added the c^2 terms back into the final equations from peterdonis at post #10 I would get "ticks" per second? and then if I wanted to calculate time at r for the clock, standing on earth, I would take the doppler blueshift off, and just calculate the gravitational shift at r?

Wouldn't the clock tick slower as it gets closer to the person standing on Earth though? https://en.wikipedia.org/wiki/Gravity_Probe_A

I was wondering what someone standing far away from a planet with mass would see if he drops a clock towards the mass. And then vice versa if I was standing on the planet, what would I see. would I see the clock tick fast and then slow as it approaches? Thanks!

If I had a chart of Cartesian coordinates and it had four axis's, t, x, y and z, how would I induce motion of a test particle by curving those axis's ? If the test particle was standing still and only moving in the t axis, how do i get it to move in the other axis's, x, y, z. I can understand a...

Hi, What would happen if I set L in this equation to zero? I can have an L that is zero right?

Where can I find numerical relativity source code?

How does general relativity shows the conservation of energy. Because I was reading and listening to something today that touched on this subject. It almost seems as though if you scale GR to larger sizes it stops working and turns into an incomplete law of nature like Newton's laws of gravitation.

PeterDonis many experiments found that GR is incorrect. This is just another one that was published on BBC.

Hello can someone help me understand the difference between Spacelike timelines and the two others found in Carroll page 71?

well i feel like in SR we can talk about length contraction okay but in GR it seems like taboo or something. Idk much about the difference between timelike worldlines or spacelike worldlines. But I mean eitherway it sounds like equivalent. But okay I need to go to bed to go to work tomorrow.

I don't see how this is any harder than it should be, if the clock comes back and is off, that distance changed. Because certainly if I traveled with that clock the whole round trip, inside it, the speed of light would have not changed. If I made the clock big enough. I didn't say global...

Well okay, let us do like the twins, two clocks; one goes around a very massive object, and comes back to me, I'm very very far away with the other clock. I picked one. Now we know that in all frames c is the speed of light. Now if that clock is off by one millisecond, something happened.

Well does it make any difference which way I pick. What I want to know is does the clock slow down as it gets closer to a mass?

But you can imagine me making two clocks right, same height, and I throw one into a black hole and one stops ticking. Then I will know.