Thread: pulsating universe

What the hell are you talking about now?

Why don't you tell me what 2 + 2 is without saying 4.

The bending of spacetime is what causes gravity. For a more thorough explanation, you will have to complete at least an undergraduate mathematics course.

The person who wrote your beloved website has clearly not studied General Relativity.

Surely, gravity cannot "bend space". It is geometrically impossible.

What on Earth can that mean? It has been shown by experiment that spacetime does bend. This person seems to be living in the 19th century when people thought space was Euclidian.

It has also been shown by experiment that the aether does not exist. Please do not ignore this for the third time.

Originally Posted by Xei

What the hell are you talking about now?

Why don't you tell me what 2 + 2 is without saying 4.

1+1+1+1

The bending of spacetime is what causes gravity. For a more thorough explanation, you will have to complete at least an undergraduate mathematics course.

What causes the bending of space-time? Gravity? LOL. Nice explanation you got there.

Sadly, there is no more to the explanation than this. That's my point.You claim there is, I ask you to show it. You can't, because it simply doesn't exist. I've studied mathematics at university, but I really fail to see any connection at all with the explanation of gravity. Please do enlighten me.

What on Earth can that mean? It has been shown by experiment that spacetime does bend. This person seems to be living in the 19th century when people thought space was Euclidian.

What is space-time? What is it made of? How can it possibly bend? What makes it bend? Time doesn't even exist to start with.

It has also been shown by experiment that the aether does not exist. Please do not ignore this for the third time.

If aether didn't exist, what do light waves travel on then? On nothingness? All waves need a medium to travel on.

What causes the bending of space-time? Gravity? LOL. Nice explanation you got there.

Nice strawman! LOL!

Four-momentum bends spacetime.

Sadly, there is no more to the explanation than this. That's my point.You claim there is, I ask you to show it. You can't, because it simply doesn't exist. I've studied mathematics at university, but I really fail to see any connection at all with the explanation of gravity. Please do enlighten me.

You've studied mathematics at university? What, as part of your sandwich retail course?

You haven't studied general relativity at any rate.

What is space-time? How can it possible bend? Time doesn't even exist to start with.

You're going to have to explain why it's impossible for it to bend.

If aether didn't exist, what do light waves travel on then? On nothingness? All waves need a medium to travel on.

Holy crap...

Aether has been experimentally discounted. Got that yet?? No matter how many vague arguments you try to conjure up, nothing is going to change that fact.

So, what do light waves travel on then? If you know so much about science, it shouldn't be hard to answer this simply question...

Originally Posted by Xei

Four-momentum bends spacetime.

Four-momentum is used for calculation. Not for bending of space-time. LOL

Four-momentum is used for calculation. Not for bending of space-time. LOL

You really don't know what you're talking about, do you?

Four-momentum is a property of objects. Just like mass or velocity. You asked me what property causes spacetime to bend. Four-momentum is the answer.

So, what do light waves travel on then? If you know so much about science, it shouldn't be hard to answer this simply question...

Electromagnetic radiation is self-propogating and has the ability of being able to travel through vacuum.

Photons are the particles responsible for light. Why does a particle need a medium to travel through?

I repeat again; your vague intuitions are of no consequence anyway. Why should your human brain have any sort of ability to cope with these exotic concepts completely outside of biological experience? The plain solid fact that you can't argue away is that there is unambiguous experimental evidence for relativity.

Geezus, I can't stand to read this. Xei, you're wrong. Gravity is the bending of spacetime, but that's caused by a local concentration of mass/energy. Not 4-momentum.

Chayba, the mechanism by which the presence of mass bends spacetime is currently unknown to science. However, the connection between mass and the bending itself has been experimentally verified. If you want to learn more, I suggest you study differential geometry. It's not for laymen.

Also, your notion that waves require a medium is wrong. Maxwell's equations demand that an accelerating charge in a vacuum (or near vacuum) needs to send out a wave of energy. This is simply a matter of mathematics. Pure logic. If you want to refute something, you're going to have to refute Maxwell's equations. Good. Fucking. Luck.

Also, all of your wave examples have had a longitudinal component. Have you ever heard of transverse waves?

It's also already generally accepted in science that vacuum doesn't exist.

Originally Posted by drewmandan

Geezus, I can't stand to read this. Xei, you're wrong. Gravity is the bending of spacetime, but that's caused by a local concentration of mass/energy. Not 4-momentum.

Chayba, the mechanism by which the presence of mass bends spacetime is currently unknown to science.

LOL! So all this time, Xei was just pulling stuff out of his ass?