Does gravity exist at very, very small scales?

Does gravity exist at very, very small scales? Stay tuned all week as we answer more of your #quantum questions for World Quantum Day!
#askfermilab #WorldQuantumDay #physics #gravity

[DJ_Force]

I have bad news. The one force you are familiar with isn't really a force.

[hadensnodgrass]

Gravity is negligible at scales of micron or smaller. Charge and fluid dynamics have a much stronger effect on those scales. Gravity is many order of magnitude smaller than the other "fundamental" forces.

[samuelmartin]

Gravity is real. I gravitate towards attractive redheads.

[Lastindependentthinker]

It is an acceleration. Though it is also a dilation according to Einstein. If Bucky Balls are made of 50 carbon atoms and can have both particle and wave-like qualities. And 1 grain of fine sand has 43 Septillion atoms. An experiment I would like to see is atoms stacked until they lose their wave/particle qualities.

[davidsicking]

The actual pull of gravity is dependent on the masses as well as separation. And so lack of masses is major. After all a micro black hole would supposedly have noticeable force just outside the event horizon. What masses and separations were involved in your experiments.

[davidvictory]

What are you guys standing in front of?
Is it part of a quantum computer? I don't know that's why I'm asking

[FalconTheFries]

Will scientists ever consider the possibility that their current version of theory of gravity is fundamentally wrong?

[nefariouspurplebadger]

If gravity didn’t work at small scales, then stars would never have formed form clouds of gaseous hydrogen and helium

[Packedburrito]

Imagine all empty space as a water like substance and blackholes as a 3d sink drain. Now apply quantum mechanics.

[ChrisBullock]

Hmm have you tested a gravity well to see the difference?

[samuelmartin]

Gravity by any other name is still Gravity.

[georgesiadis]

The force that you are familiar with ??? ... guess what.... :-D

[realms]

knowing nothing about quantum mechanics, wouldn't this bias the probability of every particle in a certain direction?

[williamstearns]

Seems like it should. Gravity effects photons, so why wouldn’t it also effect quantum particles, even if it’s effect is negligible compared to other forces?

[robert-zjef]

I think there must be a mass larger than sub- atomic scale for gravity to develop.

[mrdeanvincent]

Yes gravity still exists at the tiniest scales, but at subatomic scales the other forces become significantly stronger than gravity. This is partly due to mass and distance.

[mariogastelum]

you can not test gravity if you are in a gravity field like Earth's gravity field. you would have to go far from earth to test gravity at mcron scale.

[feezer]

Gravity is a reeeaaally weak force but has massive range. On a subatomic scale, the strong and weak nuclear forces dwarf the effects of gravity in terms of raw power but they only work in a microscopically small range.

Gravity probably exists on those tiny scales but wouldn't actually have much impact. As soon as you look at things smaller than Planck Scale (be it distance, time, mass, etc.) new rules take over and different forces become the shapers of that realm.

On an everyday human scale, gravity shapes our landscape and how we interact with the universe. In the subatomic world, it would barely impact anything.

But that also makes it incredibly hard to experimentally prove at that scale. I doubt it would rock the foundations of science to prove gavity exists at Planck Scales but it's important to know and it would be incredible to discover it doesn't exist subatomically.

[jinfin]

Newton gravity vs einstein gravity pls explain

[joshuabradshaw]

It's nonintrinsic. You should get better at the other forces to realize gravity is a result not a cause...