Linked Questions

0
votes
1answer
46 views

Does the fabric of spacetime go through objects? [duplicate]

I've always seen spacetime shown with a ball on top of some cloth that curves around it, and I don't really understand it, since it really only has 2 dimensions and there's some sort of external ...
0
votes
0answers
58 views

Is Earth flat according to Einstein? [duplicate]

I didnt understand how to apply general relativity to Earth. If there is no such a thing as gravity but spacetime bending. Can someone just show, send something to read how gravity works in Earth ...
0
votes
3answers
171 views

Is gravity a force given that it derives from curved massless space-time?

One of the answers to a similar question regarding gravity concluded that gravity is an "observed effect" of the curvature of space-time. I read this (and other answers) to imply that gravity results ...
2
votes
1answer
971 views

Gravity: Why Do things fall to Earth? [duplicate]

If gravity is in reality spacetime geometry why when I drop an object on the surface of the Earth does it fall to the ground? Does spacetime push it?
-2
votes
2answers
86 views

If gravity can be thought of as masses leaving dents on a spacetime 'sheet', what is holding up that sheet? [duplicate]

If the force of gravity can be thought of as masses leaving dents on a sheet of spacetime, what is holding up that sheet?
0
votes
1answer
61 views

What does bent in space-time means exactly? How does mass of an object affect space and time? [duplicate]

I don't understand how does of mass an object for example say earth causes distortion in space and time. I am just new to this field so it is difficult imagine this phenomenon.
0
votes
0answers
46 views

Reason for gravitational force [duplicate]

What is the reason for the existence of gravitational force between two bodies? Why do we say it as an attractive force? What makes any two objects to attract each other?
0
votes
1answer
85 views

Is there a proper explanation for WHY, not how, gravity causes objects to accelerate from a standstill? [duplicate]

I was looking for and could not find a proper explanation for why the accepted model of gravity causes objects to accelerate. Typically the answer is constant force on object equals movement, or ...
28
votes
6answers
5k views

Does the curvature of spacetime theory assume gravity?

Whenever I read about the curvature of spacetime as an explanation for gravity, I see pictures of a sheet (spacetime) with various masses indenting the sheet to form "gravity wells." Objects which are ...
7
votes
5answers
2k views

Alternate layman's metaphors for illustrating curved space-time

The metaphor of a surface (typically a pool table or a trampoline) distorted by a massive object is commonly used as a metaphor for illustrating gravitationally induced space-time curvature. But as ...
0
votes
0answers
58 views

Is gravity just the result of bending the space? [duplicate]

so einstein said that space is a thing and that if you put a heavy object in it it will bend it, just like a trampoline when you jump on it. and he said that gravity is just the result of another ...
-1
votes
1answer
2k views

Why does an apple fall to the ground according to GR? [duplicate]

My understanding is, that according to GR, an apple falls to the ground not because it is being pulled but because it follows the curvature of space, caused by the mass of the Earth. My question is - ...
0
votes
1answer
476 views

Why does the Earth seem to be round in 3D, and what would it look like in 4D?

Sorry but I have read this question How exactly does curved space-time describe the force of gravity? and the answer by joseph f. johnson, where he says: "Newton did not realise that space-time ...
0
votes
3answers
2k views

Is the tide on Earth caused by curvature of spacetime

The tide on Earth appears absolutely whenever the moon is overhead. Is that tide caused by spacetime, re-curvature in space or attraction gravity?
0
votes
2answers
242 views

How does gravity truly work in the bend of spacetime?

If gravity is caused from the bend in space time from a large mass, why do all objects fall towards earths center and not strait down to below earth? Sorry i am not an expert in any fields just trying ...

15 30 50 per page