B How Are Images of Gravity Dips in Space Created Without a Sense of Direction?

[mpresic]

I think of it as a dimple in space but that's wrong too. It is probably impossible to visualize gravity as a curvature in space-time. The general theory is a consequence of the absolute differential calculus of Levi - Civita. this mathematics allows scientists to use relativity without the brains limited experiences and perceptions to "visualize" it.

 

[David Lewis]

Now what I imagine on why there is a pull between atoms, molecules, and objects is because everything is vibrating.

Gravity always attracts, whereas electric and magnetic forces may either attract or repel. A theory of force fields would need to explain that.

 

[sukalp]

Will you say this video is a pretty well explanation of geodesics as you previously explained?



I understand why they use Riemann geometry because there is no mass in space as oppose to planet or star, so it makes sense why they use two different types of geometry to figure it out.

this video seems to me like ray of light traveling across mountain and making some spring

 

[sukalp]

first of all let's talk in fundamental terms
mass is a quantity of matter present inside body.
everything is just made up of matter and matter has some quantity.
That quantity of matter presented inside our body is mass attracted by force
what is that force?
it is gravity
that is called weight
gravity is a force that attracts other bodies due to mass .

if matter is more,more mass,more weight,more gravity.in this sense i can say mass,weight,matter,gravity are directly proportional to each other.question on gravity does weight depends on gravity?
yes weight depends upon gravity and gravity is particular force only called force of gravity

 

[phinds]

this video seems to me like ray of light traveling across mountain and making some spring

I don't know what geometry you are thinking of but there is zero possibility that the curves shown could be "ray of light traveling across a mountain"

 

[A.T.]

Will you say this video is a pretty well explanation of geodesics as you previously explained?

Check out the this link for a clearer explanation of how those geodesics relate to gravity:

http://www.relativitet.se/spacetime1.html

 

[David Lewis]

For the 2d images, perhaps they can tell us it's a shorthand, but then show us an actual 3d image and explain how "Riemann geometry" works.

The 3D model could incorporate time as one of the dimensions. Unlike space, you are unavoidably moving through time no matter what. Also, a spacetime interval is the same in all reference frames.

 

[Dale]

Closed pending moderation

Edit: some speculative posts have been deleted and the thread is closed.