Gravity at atomic levels, first time post

In summary, pan believes that space-time could potentially have a critical mass where it would not bend, similar to how a bowling ball or cannon ball will not bend a trampoline. However, he does not know of any theories which introduce a mass cutoff in the source of gravity.
  • #1
Peter Pan
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I have very little training in the area of Physics, but enough to understand most of what is said on this forum. This is a first time post.

My question has to do with gravity on an atomic level. This question is for those of you familiar with trying to combine all four natural forces.

First these are a few things I understand to be true:
1 Gravity is the weakest of the 4 natural forces.
2 The current problem with the unified field theory is combining all 4 forces into one equation.
3 We can currently combine strong nuclear force, weak nuclear force, and electromagnetism into one equation.
4 Gravity is actually the result of a body of mass bending space-time.

My question is this…
Is space-time elastic and if so does it have a critical mass needed to bend it?

For instance if a bowling ball or a cannon ball is set on a trampoline, the trampoline will bend. But, if a grain of sand is set on a trampoline it will not bend the material. Could this example parallel real space-time? A star has enough mass to curve space-time, while and atom or a particle does not. I believe that if this is the case, that a lot of the problems due to using gravity on an atomic level would be solved.

This may not be a new idea. I have not the foggiest. Please lead me to any research already done on the subject or give me your own expertise on the subjuct.

Thank you,
Pan
 
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  • #2
In general relativity, any amount of mass-energy will curve spacetime. It is not really correct to think of spacetime curvature as "elasticity".

I don't know any theories which introduce a mass cutoff in the source of gravity. It would be very difficult to construct a theory, to explain in any kind of natural way how individual atoms do not gravitate, but a large collection of individual atoms does gravitate. Moreoever, we have no evidence of such a cutoff.
 
  • #3
A small correction: no. 3 is not correct, you can combine electromagnetism and the weak nuclear force intgo the electroweak theory, but you cannot combine this with the strong nuclear force which is explained by quantum chromodynamics, though QCD and the electroweak theory make-up what is known as the stadard mnodel (to be unifired into some yet-unknown 'grand unified theory').

In general relativity there is no minimum mass required to bend space-time. General relativity cannot howver be the full picture as it is incompatible with quantum theory, so how exactly v.small masses affect space-time is unkown, though seeing as the curvature of space-time is what virtually defines mass in GR yu'd have to ask the menaing of a mass that doesn't cause such curvature.
 
  • #4
though seeing as the curvature of space-time is what virtually defines mass in GR

I did not know that, is there any further reading you can point me to
 
  • #5
Originally posted by Peter Pan
My question is this…
Is space-time elastic and if so does it have a critical mass needed to bend it?

For instance if a bowling ball or a cannon ball is set on a trampoline, the trampoline will bend. But, if a grain of sand is set on a trampoline it will not bend the material.
That CAN be true, but it isn't always true, In a trampoline, a grain of sand will most certainly push down the trampoline, just by an amount too small to measure. Springs can be coiled with a force pushing the coils together, which is where the initial force required to move them comes from. Its part of the equation for force on a spring. But not all springs act that way.

Interesting possibility though (sorry, but I can't comment on the validity of it - out of my field).
 

FAQ: Gravity at atomic levels, first time post

1. What is gravity at the atomic level?

Gravity at the atomic level refers to the force of attraction between particles such as atoms and subatomic particles. This force is responsible for holding together the structure of matter and plays a crucial role in shaping the universe.

2. How does gravity work at the atomic level?

At the atomic level, gravity works through the interaction between mass and energy. According to Einstein's theory of general relativity, mass and energy are equivalent and create a curvature in the fabric of space-time, which causes objects to be attracted to each other.

3. Is gravity the same at the atomic level as it is on a larger scale?

Yes, the fundamental principles of gravity remain the same at the atomic level and on a larger scale. However, the effects of gravity may vary depending on the mass and proximity of the objects involved.

4. How is gravity measured at the atomic level?

Gravity at the atomic level is measured using specialized instruments, such as the Cavendish balance, which can detect the tiny gravitational forces between objects. Scientists also use mathematical models and simulations to study the effects of gravity on atomic particles.

5. Can gravity be manipulated at the atomic level?

Currently, there is no known way to manipulate gravity at the atomic level. However, scientists are constantly researching and experimenting with new technologies and theories that may one day allow us to control gravity on a smaller scale.

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