Negative Gravity?


Treversal

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Feb 24, 2019
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82

QUOTE

And although the amount of mass carried by the phonons is expected to be tiny—comparable with a hydrogen atom, about 10–24 grams—it may actually be measurable. Except, if you were to measure it, you would find something deeply counterintuitive: The mass of the phonons would be negative, meaning they would fall “up.” Over time their trajectory would gradually move away from a gravitational source such as Earth. “If their gravitational mass was positive, they would fall downward,” Penco says. “Because their gravitational mass is negative, phonons fall upwards.”
 

Treversal

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Feb 24, 2019
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82
So a rotating CASIMIR HOOP also needs "A Space Odyssey" played "around it"?
 

Harte

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Mar 24, 2005
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Phonons are hypothetical particles envisioned to stand-in for real particles such as photons.
All phonons can do is illustrate what real particles do.

So this effect would need to be demonstrated with actual particles for any meaning to be assigned to it.

Harte
 

Kairos

Active Member
Joined
Mar 31, 2018
Messages
714
Up and down are just subjective ways of visualizing the pinching and stretching of spacetime.

If there were such a thing, up and down would be along a fourth dimensional axis.

But I think it a mistake to confuse the common visualization (model) of spacetime with the reality. The math is where it's at, but I have not messed around with tensors since grad school, so that's not happening.
 

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