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Quantum particles feel the influence of gravitational fields they never touch

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11–20 of 64 posts

Re: Quantum particles feel the influence of gravitational fields they never touch

#11
post #7

Earlier quoted context omitted.

What about the use of quantum physics in things like semiconductors?

semiconductors don't "use" quantum physics, quantum physics just tries to explain how they work. semiconductors still exist without requiring quantum physicists to come in and try and steal credit for something they had no influence on whatsoever.

They used to but manufacturers are starting to have to deal with quantum effects lately https://semiengineering.com/quantum-effects-at-7-5nm/

Re: Quantum particles feel the influence of gravitational fields they never touch

#12
post #4

article goes on to state that gravitational pull effects surrounding objects without touching them, you know, like how we already know every fucking planet works? quantum physics: the biggest waste of time since philosophy

You're about a hundred years late to be making this stand. I've never actually seen anyone claim that quantum physics in general is hooey. What do you even mean by that? That in fact, all of modern physics observations, as well as cosmology, materials science, etc, can actually be explained by classical physics? Or do you mean that you think there is some underlying classical/deterministic process which drives nature, and quantum mechanics is our attempt to predict outcomes based on an incomplete understanding? That is a defensible position, but it still wouldn't make sense to call quantum physics a waste of time.

Re: Quantum particles feel the influence of gravitational fields they never touch

#13
post #7

Earlier quoted context omitted.

What about the use of quantum physics in things like semiconductors?

semiconductors don't "use" quantum physics, quantum physics just tries to explain how they work. semiconductors still exist without requiring quantum physicists to come in and try and steal credit for something they had no influence on whatsoever.

Not for nothing but Shockley, Bardeen, and Brattain were physicists awarded a Nobel "for their researches on semiconductors and their discovery of the transistor effect". Bardeen also won a separate Nobel for a theory of superconductivity. Claiming they're not quantum physicists or had no influence on semiconductors is misinformed.

Re: Quantum particles feel the influence of gravitational fields they never touch

#14
post #7

Earlier quoted context omitted.

What about the use of quantum physics in things like semiconductors?

semiconductors don't "use" quantum physics, quantum physics just tries to explain how they work. semiconductors still exist without requiring quantum physicists to come in and try and steal credit for something they had no influence on whatsoever.

Now do Josephson Junctions. https://en.wikipedia.org/wiki/Josephson_voltage_standard

Re: Quantum particles feel the influence of gravitational fields they never touch

#15
post #7

Earlier quoted context omitted.

What about the use of quantum physics in things like semiconductors?

semiconductors don't "use" quantum physics, quantum physics just tries to explain how they work. semiconductors still exist without requiring quantum physicists to come in and try and steal credit for something they had no influence on whatsoever.

Nothing in the universe »uses« quantum physics. Or classical physics. Or any physics. Or any science. Or anything made by man. Or aliens. All a waste of time and resources.

Re: Quantum particles feel the influence of gravitational fields they never touch

#16
post #7

Earlier quoted context omitted.

What about the use of quantum physics in things like semiconductors?

semiconductors don't "use" quantum physics, quantum physics just tries to explain how they work. semiconductors still exist without requiring quantum physicists to come in and try and steal credit for something they had no influence on whatsoever.

How is explaining/figuring out how quantum physics effects semiconductors "stealing credit"? Learning about how quantum tunneling effects impact super small transistors is extremely useful since chip designers can use this info to design chips that mitigate this effect as we scale down.

Also in the material sciences metamaterials have special properties precisely because of how the molecular structure manipulates quantum forces. https://www.nature.com/articles/s41467-019-09939-8

Re: Quantum particles feel the influence of gravitational fields they never touch

#17

I'm not sure how it's possible to "never touch" a gravitational field given that they extend throughout the universe and are impossible to be shielded.

One, in theory could shield of them, by having the same field apply from the opposing direction and distance. So if one could create such a "mirror" copy of all attractors - one would have a L1 Lagrange point. The forces still interact, but chancel each other out.

Re: Quantum particles feel the influence of gravitational fields they never touch

#18
post #4

article goes on to state that gravitational pull effects surrounding objects without touching them, you know, like how we already know every fucking planet works? quantum physics: the biggest waste of time since philosophy

> quantum physics: the biggest waste of time since philosophy

Sure. After all, natural sciences from physics to biology used to be called natural philosophy until not so long ago.

Re: Quantum particles feel the influence of gravitational fields they never touch

#19
post #14
post #7

Earlier quoted context omitted.

semiconductors don't "use" quantum physics, quantum physics just tries to explain how they work. semiconductors still exist without requiring quantum physicists to come in and try and steal credit for something they had no influence on whatsoever.

Now do Josephson Junctions. https://en.wikipedia.org/wiki/Josephson_voltage_standard

Indeed, or superfluids, Fermi-Dirac and Bose-Einstein condensates, quantum computers, lasers, quantum dot displays, quantum key distribution, MRI scanners, that trick with 3 polarising filters letting though more light than just 2, antimatter, and electron microscopes.

Oh, and Casimir cavities.

Re: Quantum particles feel the influence of gravitational fields they never touch

#20

I'm not sure how it's possible to "never touch" a gravitational field given that they extend throughout the universe and are impossible to be shielded.

They measured a bigger gravitational effect on the particle, because the superpositional pair of the particle flew closer to a mass than the actually measured particle.

Regarding the "never touch", gravity decreases with distance squared, so it diminishes quickly with distance. There is a big difference in being near the mass, as opposed to feeling the dimished effect of it from far.

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