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  #1881  
Old 04.07.2019, 19:23
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Re: Ask a Scientist

What do these shoes do, and how do they do it?
https://www.compumet.ch/Systeme-gege...V-komfort.html

Is the electroconductivity bi-directional?
Does it make a difference on what surface they are worn? Carpet, concrete, scaffolding, oill, outdoors, wet, dry?
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  #1882  
Old 04.07.2019, 21:40
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Re: Ask a Scientist

Soooo. Is talking to onself a sign of a crazy or a sign of a genius? Does everyone do it? Is it just an inside voice turned into the outside voice?

Last edited by MusicChick; 04.07.2019 at 21:56.
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  #1883  
Old 04.07.2019, 23:12
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Re: Ask a Scientist

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What do these shoes do, and how do they do it?
https://www.compumet.ch/Systeme-gege...V-komfort.html

Is the electroconductivity bi-directional?
Does it make a difference on what surface they are worn? Carpet, concrete, scaffolding, oill, outdoors, wet, dry?
The purpose of ESD shoes is to safely discharge the static the wearer builds up to the ground, rather than discharging when the person touches something. You probably remember getting shocked when getting out of the car or after shuffling across a carpet. In the working world, ideally they'd be used in combination with ESD flooring. I'm not sure how effective they'd be if you're doing a dance on 1970's shag carpet.

Not too nerdy reading:

https://www.uvex-safety.com/blog/201...twear-example/ and

https://www.explainthatstuff.com/how...tingswork.html

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Soooo. Is talking to onself a sign of a crazy or a sign of a genius? Does everyone do it? Is it just an inside voice turned into the outside voice?
According to the psychology classes I took, it's neither crazy nor genius. It's totally normal. We talk to ourselves all the time inside our heads, and sometimes there's a trigger that makes us verbalize it. I tend to talk to myself when I'm concentrating on something difficult, when I'm frustrated, and especially when I am alone. Talking to ourselves or to the universe helps us process and remember.
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  #1884  
Old 06.07.2019, 16:19
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Re: Ask a Scientist

Thank you, 3Wishes. I've put those articles aside for recreation, later.
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  #1885  
Old 08.07.2019, 10:10
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Re: Ask a Scientist

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According to the psychology classes I took, it's neither crazy nor genius. It's totally normal. We talk to ourselves all the time inside our heads, and sometimes there's a trigger that makes us verbalize it. I tend to talk to myself when I'm concentrating on something difficult, when I'm frustrated, and especially when I am alone. Talking to ourselves or to the universe helps us process and remember.
Yeah, what made me think about this is a fellow gym runner who happens to utter some strange words...not your usual motivational affirmations. It may be some ritual. The fact that he goes for a h/c workout, too.
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  #1886  
Old 14.07.2019, 21:50
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Re: Ask a Scientist

Quantum Entanglement.

I've read the explanations and still don't get it. If we know one of two quantum entangled things have a particular attribute, then the other will have the same. But if I know two things are the same, then I'd expect them to be the same... what am I missing?
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  #1887  
Old 14.07.2019, 21:55
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Re: Ask a Scientist

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Quantum Entanglement.

I've read the explanations and still don't get it. If we know one of two quantum entangled things have a particular attribute, then the other will have the same. But if I know two things are the same, then I'd expect them to be the same... what am I missing?
The point is that if you change the attribute on one then the other immediately also changes its attribute even if it is on the other side of the universe; which spoils theories like nothing is faster than the speed of light.
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  #1888  
Old 14.07.2019, 22:45
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Re: Ask a Scientist

So... if I have two entangled photons, then one will be polarised at 45° and the other one will be at the same polarisation - 45°. Then I twist one of them to 90°, the other will also be at 90°?
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  #1889  
Old 14.07.2019, 23:17
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Re: Ask a Scientist

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So... if I have two entangled photons, then one will be polarised at 45° and the other one will be at the same polarisation - 45°. Then I twist one of them to 90°, the other will also be at 90°?
Well they usually talk about right or left circular polarization for photons but basically yes; change one and the other changes immediately.
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  #1890  
Old 15.07.2019, 10:50
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Re: Ask a Scientist

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The point is that if you change the attribute on one then the other immediately also changes its attribute even if it is on the other side of the universe; [I]which spoils theories like nothing is faster than the speed of light[/I].
As I understand it, this is not true. Information is not transmitted at faster than the speed of light. It's just that two entangled photons are one quantum object, despite being separated in space. Their actions are correlated, just like the movements of Australia and the UK, which move in a concerted way, despite being far apart. Nobody is surprised that a day is the same length in both countries.
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  #1891  
Old 15.07.2019, 13:41
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Re: Ask a Scientist

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Well they usually talk about right or left circular polarization for photons but basically yes; change one and the other changes immediately.
It doesn't really happen like that, there is no actual "active link" (spooky action at a distance, according to Einstein); the measurement does not cause "the wave function to collapse".

The wave function is not an actual wave, but rather a set of numbers that can predict the probability of a phenomenon that could happen in the future. It "remembers" all the correlations, just because for every possible combination of measurements of the entangled particles, quantum mechanics can predict a probability. All these probabilities exist a moment before the measurement, too, and when things are measured then one of the outcomes is realized.

In simpler terms, you can say that both particles are part of the same function (they're in a superposition state, in which all possible states exist).
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  #1892  
Old 15.07.2019, 14:21
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Re: Ask a Scientist

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In simpler terms, you can say that both particles are part of the same function (they're in a superposition state, in which all possible states exist).
Your explanation makes me feel like this poor sap.
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  #1893  
Old 15.07.2019, 14:54
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Re: Ask a Scientist

Is there the slightest fragment of truth in Astral Projection?

I saw an ad for a $49 course on Facebook. Seems like something to do at weekends - travel round the universe, go to future and past and have sex and so on.

But I don‘t want to waste my money...
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  #1894  
Old 15.07.2019, 15:06
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Re: Ask a Scientist

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Your explanation makes me feel like this poor sap.
I'm sorry, there's no simple way to explain a very complex topic that already requires understanding of other concepts (you can't really talk about quantum entanglement without talking about superposition). And since quantum mechanicts contradicts everyday experience so much...it's just hard to use relatable examples.

But I CAN explain what happened in Chernobyl without talking about graphite. The new TV show did a GREAT job in the last 2 chapters.
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  #1895  
Old 15.07.2019, 15:07
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Re: Ask a Scientist

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Is there the slightest fragment of truth in Astral Projection?

I saw an ad for a $49 course on Facebook [...]have sex and so on.

But I don‘t want to waste my money...
Time travel and sex for 50 chuffs is a heck of a deal.
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  #1896  
Old 15.07.2019, 15:07
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Re: Ask a Scientist

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Is there the slightest fragment of truth in Astral Projection?

I saw an ad for a $49 course on Facebook. Seems like something to do at weekends - travel round the universe, go to future and past and have sex and so on.

But I don‘t want to waste my money...
Yes, definitely, there is a fragment of truth in it. Namely that sliver of your imagination which can envisage just such travels.
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  #1897  
Old 15.07.2019, 15:44
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Re: Ask a Scientist

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I'm sorry, there's no simple way to explain a very complex topic that already requires understanding of other concepts (you can't really talk about quantum entanglement without talking about superposition). And since quantum mechanicts contradicts everyday experience so much...it's just hard to use relatable examples.

But I CAN explain what happened in Chernobyl without talking about graphite. The new TV show did a GREAT job in the last 2 chapters.
I didn't need the TV show (which I haven't seen) to understand the basic physics of the nuclear accident. Nor am I quite so unaware of quantum 'stuff' than I might have seemed.

But I've yet to come across anyone able to explain it in lay terms, so it wasn't having a go at your attempt, just pointing out the apparent impossibility of succeeding without resorting to outright falsehoods as in the cartoon.
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  #1898  
Old 15.07.2019, 18:39
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Re: Ask a Scientist

I guess you can oversimplify it by saying that the nuclear reaction is a self-sustaining system, and that the Chernobyl operators ran a test that got the fuel-to-control relationship unbalanced, and the reactor overheated faster than they could control it. That caused tons of water to evaporate instantly, and it caused a steam explosion, that sent radioactive material flying in every direction.
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  #1899  
Old 15.07.2019, 19:01
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Re: Ask a Scientist

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It doesn't really happen like that, there is no actual "active link" (spooky action at a distance, according to Einstein); the measurement does not cause "the wave function to collapse".

The wave function is not an actual wave, but rather a set of numbers that can predict the probability of a phenomenon that could happen in the future. It "remembers" all the correlations, just because for every possible combination of measurements of the entangled particles, quantum mechanics can predict a probability. All these probabilities exist a moment before the measurement, too, and when things are measured then one of the outcomes is realized.

In simpler terms, you can say that both particles are part of the same function (they're in a superposition state, in which all possible states exist).
Probably makes more sense to take the Platonic view that we live in a fundamentally mathematical universe and not attempt a physical explanation.

Nevertheless since superposition was mentioned; in classical physics an arrow can only point in one direction at any one time - in quantum mechanics, the arrow is not so constricted (this includes the arrow of time).
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  #1900  
Old 15.07.2019, 23:44
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Re: Ask a Scientist

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Probably makes more sense to take the Platonic view that we live in a fundamentally mathematical universe and not attempt a physical explanation.

Nevertheless since superposition was mentioned; in classical physics an arrow can only point in one direction at any one time - in quantum mechanics, the arrow is not so constricted (this includes the arrow of time).
Time flies like an arrow. Fruit flies like a banana.
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