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mitrasoumya
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Is there any experimental proof which shows that the force of gravity works at Planck length? Has it been verified already? Is it verifiable?
Plank length is approximately TWENTY ORDERS OF MAGNITUDE smaller than anything we can currently measure, so no. BUT ... there is nothing special about the plank length in that regard, any more than there's anything special about the meter or the foot.mitrasoumya said:Is there any experimental proof which shows that the force of gravity works at Planck length? Has it been verified already? Is it verifiable?
We can observe the effect of the Earth's gravitational field on neutrons. Does that count?Biker said:Do we even have the accuracy and precision to measure the force of gravity at atomic level? I would be actually really surprised if we do.
But how can we say that so confidently about something we haven't been able to measure as yet.phinds said:Plank length is approximately TWENTY ORDERS OF MAGNITUDE smaller than anything we can currently measure, so no. BUT ... there is nothing special about the plank length in that regard, any more than there's anything special about the meter or the foot.
Plank length is the shortest meaningful distance and therefore it IS special.weirdoguy said:Because there is no reason to think that Planck length is special. If there is no reason, why should we think it is special? There are other "planck units", like Planck resistance, which I read here (didn't calculate it myself) is about 30 ohms. Why should we think it's special?
mitrasoumya said:Plank length is the shortest meaningful distance and therefore it IS special.
you are giving it too much importancemitrasoumya said:Plank length is the shortest meaningful distance and therefore it IS special.
But the "mainstream" is incomplete, and therefore leaves gaps that have to be filled by some or other hypothesis. The assumption that gravity acts at Planck length is still an assumption. And all assumptions tend to limit our imagination. The "obviousness" of objects falling down, the idea of absolute space and absolute time were all assumptions that have been proved wrong by proof.Drakkith said:That's only true for certain quantum theories of gravity. All of which are hypothetical and are not currently accepted as mainstream theories.
mitrasoumya said:But the "mainstream" is incomplete, and therefore leaves gaps that have to be filled by some or other hypothesis.
mitrasoumya said:assumption that gravity acts at Planck length is still an assumption.
davenn said:you really need to listen to what the others are telling you
Yes. And that implies that the force would become infinite at plank length! Which perhaps has no observational evidence.Drakkith said:All known fundamental forces become stronger at shorter distances.
mitrasoumya said:Yes. And that implies that the force would become infinite at plank length!
That's just ridiculous. The Plank Length is not zero, you know.mitrasoumya said:Yes. And that implies that the force would become infinite at plank length!
That is a very common misconception, so common that we even have an Insights article about it: https://www.physicsforums.com/insights/hand-wavy-discussion-planck-length/mitrasoumya said:Plank length is the shortest meaningful distance and therefore it IS special.
It is 0.000000000000000000000000000000000016 mphinds said:The Plank Length is not zero.
And yet you treated it like zero. Do you not see the contradiction?mitrasoumya said:It is 0.000000000000000000000000000000000016 m
The Planck length is a fundamental unit of length in the study of quantum mechanics. It is defined as the distance at which quantum effects of gravity become significant.
There is currently no conclusive proof that gravity operates at the Planck length. The laws of general relativity, which describe gravity at large scales, break down at the Planck length. Some theories, such as loop quantum gravity, propose that gravity does operate at this scale, but this has not been confirmed.
Currently, there is no empirical evidence to support the existence of gravity at the Planck length. However, some theories, such as string theory, suggest that gravity does operate at this scale, but these theories have not been proven yet.
Testing gravity at the Planck length is a challenge because it requires extremely high energies and small distances. Some proposals involve using particle accelerators and studying the effects of extremely high energy collisions. Another approach is to study the effects of gravity on particles at very small scales, such as in the behavior of black holes.
Studying gravity at the Planck length is essential for a complete understanding of the fundamental forces of nature. It could also help reconcile the differences between general relativity and quantum mechanics, which are currently two separate and conflicting theories. Additionally, understanding gravity at the Planck length could provide insights into the nature of the universe and the behavior of black holes.