All Questions
12
questions
4
votes
6
answers
1k
views
How does general relativity theory explain gravitational pull? [duplicate]
I watched some videos on YouTube that explain why gravity is not a force,
according to general relativity theory.
I can wrap my head around the idea that spacetime can be curved due to a massive mass,
...
- 141
0
votes
2
answers
429
views
Why is gravity not a force? [duplicate]
Gravitation is the mutual attraction of masses, yet Einstein showed it is how spacetime is curved by mass and how mass moves in relation to this curvature. Why then do we still consider gravitation a &...
- 510
3
votes
2
answers
368
views
Confusion about near-identical terms: gravity, gravitation, gravitational force - are they all the same?
As my other questions also point out, I study this for fun. I am in no university yet.
as the title (hopefully summarizes), my question is this:
is these words(or terms,) the same?
gravity
...
- 398
0
votes
0
answers
63
views
If there are no gravity under the general theory of relativity, how can we be attracted to massive objects (from the side)?
Watching this video, it is explained that there are no force of gravity under the general theory of relativity, but a force made by objects moving through spacetime.
The example made in this video to ...
- 131
4
votes
5
answers
1k
views
If gravity isn’t a force how does it cause motion? [duplicate]
In general relativity, gravity is the effect of curving space-time caused by mass and is described as an acceleration.
So what exactly is causing this pull towards the earth?
Is a force not required ...
- 340
-1
votes
3
answers
179
views
Is gravity a force? Can there be a new BETTER theory for it? [closed]
what I'm asking is simple in look, but actually, it goes into depth and is complicated. Can there be a new better theory for gravity? and how and why is it not a force? it seems like the theory's the ...
- 27
1
vote
3
answers
280
views
Why is gravity generally defined as the consequence of a curve rather than a pull? [closed]
This question is asking to better understand the semantics of mainstream physics. My assumption being there is a specific narrative behind the preferred term. In any case, it seems like an essential ...
- 261
0
votes
2
answers
279
views
Are all the matter & the force fields part of spacetime?
I have checked at these below:
Is matter a continuous part of the field of space-time?
Is spacetime all that exists?
What I could understand is that particles are different kinds of local ...
- 73
55
votes
4
answers
3k
views
GR and my journey to the centre of the Earth
[General Relativity] basically says that the reason you are sticking to the floor right now is that the shortest distance between today and tomorrow is through the center of the Earth.
I love ...
- 643
2
votes
1
answer
1k
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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?
- 203
8
votes
5
answers
3k
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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 ...
- 5,145
81
votes
17
answers
59k
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How exactly does curved space-time describe the force of gravity?
I understand that people explain (in layman's terms at least) that the presence of mass "warps" space-time geometry, and this causes gravity. I have also of course heard the analogy of a blanket or ...
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