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New magnetic component discovered in the Faraday effect

phys.org

41–50 of 88 posts

Re: New magnetic component discovered in the Faraday effect

#41

We intuitively think in particles and see a world of billiard balls colliding with one another. But actually everything is merely waves and fields. There's going to be a time where humans finally reconcile the quantum with the newtonian -- and I can't wait for that day

That we're just collections of wave interference is wild.

We're built on so many layers of emergence, it's wild!

quantum particles => atoms => chemistry => biochemistry => cellular life => multi-cellular life => intelligence

Re: New magnetic component discovered in the Faraday effect

#42

Earlier quoted context omitted.

> But actually everything is merely waves and fields. The two-slit experiment says otherwise.

Another interpretation of the double-slit posits a guiding 'Pilot Wave' separate from physical particles... aka DeBroglie-Bohm Theory or Bohmian Mechanics. Apparently it's not popular among professional physicsts though John Bell investigated it a bit. Einstein had some unpublished notes in the 1920s about a "Gespensterfeld" (ghost field) that guided particles. Born was influenced by this 'Ghost field' idea when he p…

Veritasium did a video on this [1] with a surface of oil to replicate the effect on a petri dish.

[1] https://www.youtube.com/watch?v=WIyTZDHuarQ

Re: New magnetic component discovered in the Faraday effect

#43

Earlier quoted context omitted.

> But actually everything is merely waves and fields. The two-slit experiment says otherwise.

Hmm? The double slit experiment definitely shows that particles are waves—weird quantum waves, but still waves.

The two-slit experiment shows that photons behave like waves if you aren't looking at them, and that they fail to behave like waves if you are.

Re: New magnetic component discovered in the Faraday effect

#44
post #20

We intuitively think in particles and see a world of billiard balls colliding with one another. But actually everything is merely waves and fields. There's going to be a time where humans finally reconcile the quantum with the newtonian -- and I can't wait for that day

I think neither analogy is correct. We're using macro metaphors (real world things at human time and spatial scales) to explain microscopic phenomena that may not correspond to anything that we find familiar.

I agree with this. As a physicist, I believe the most accurate resolution is to say that «quantum fields» and «quantum particles» describe neither waves (in the sense of e.g. water or acoustic waves) nor particles (in the sense of marbles and billiard balls), but a third thing that simply has some things in common with both classical waves and classical particles. The analogies are useful for understanding that third thing, but if you believe the analogies too literally, then you’ll make mistakes.

Re: New magnetic component discovered in the Faraday effect

#45

Earlier quoted context omitted.

Another interpretation of the double-slit posits a guiding 'Pilot Wave' separate from physical particles... aka DeBroglie-Bohm Theory or Bohmian Mechanics. Apparently it's not popular among professional physicsts though John Bell investigated it a bit. Einstein had some unpublished notes in the 1920s about a "Gespensterfeld" (ghost field) that guided particles. Born was influenced by this 'Ghost field' idea when he p…

Pilot wave is still my favorite - I don’t really believe it, but I like the image

[deleted]

Re: New magnetic component discovered in the Faraday effect

#46

Earlier quoted context omitted.

Hmm? The double slit experiment definitely shows that particles are waves—weird quantum waves, but still waves.

The two-slit experiment shows that photons behave like waves if you aren't looking at them, and that they fail to behave like waves if you are.

[deleted]

Re: New magnetic component discovered in the Faraday effect

#48

We intuitively think in particles and see a world of billiard balls colliding with one another. But actually everything is merely waves and fields. There's going to be a time where humans finally reconcile the quantum with the newtonian -- and I can't wait for that day

Just listen to Feynmann trying to explain why he can't explain magnetism in macro terms (e.g. https://www.youtube.com/watch?v=MO0r930Sn_8)

Re: New magnetic component discovered in the Faraday effect

#49
post #41

Earlier quoted context omitted.

That we're just collections of wave interference is wild.

We're built on so many layers of emergence, it's wild! quantum particles => atoms => chemistry => biochemistry => cellular life => multi-cellular life => intelligence

It can keep going!

Intelligence -> societies -> technology -> ?

One has to wonder how far can emergence stretch given enough time, some kind of entropic limit probably exists but I'm just a layman, hopefully someone more knowledgeable can share if we already know a physical hard limit for emergence.

Re: New magnetic component discovered in the Faraday effect

#50
post #8

Earlier quoted context omitted.

what happens when you only send a single photon down the line though?

As the other comments have already mentioned, it interferes with itself, so you still observe the same interference patterns [0] [1]. Which admittedly seems impossible at first, but so does the rest of quantum physics. [0]: https://www.feynmanlectures.caltech.edu/III_01.html#Ch1-S5 [1]: https://en.wikipedia.org/wiki/Wave%E2%80%93particle_duality#...

> Which admittedly seems impossible at first, but so does the rest of quantum physics.

AKA, miracles can happen, hehe.

I'm not trolling, this is a philosophical point I'm making.

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