<center><h1>Fun science!</h1></center>
<h2>The story of Rutherford and quantum mechanics</h2> https://steemitimages.com/0x0/https://steemitimages.com/0x0/https://steemitimages.com/0x0/https://steemitimages.com/DQmW7pxypVzm4GQ3BUoA483rjMNgauLetrq3aQ1KaGHddBA/image.png
<center> Thank you @leesongyi for drawing </center>
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# [Fun science!] list
[[Fun science!] #1. The story of Rutherford and quantum mechanics](https://steemit.com/science/@yoon/fun-science-the-story-of-rutherford-and-quantum-mechanics)
[[Fun science!] #2. The story of Rutherford and quantum mechanics](https://steemit.com/science/@yoon/fun-science-2-the-story-of-rutherford-and-quantum-mechanics)
[[Fun science!] #3. The story of Rutherford and quantum mechanics](https://steemit.com/science/@yoon/fun-science-3-the-story-of-rutherford-and-quantum-mechanics)
[[Fun science!] #4. The story of Rutherford and quantum mechanics](https://steemit.com/sndbox/@yoon/fun-science-4-the-story-of-rutherford-and-quantum-mechanics)
[[Fun science!] #5. The story of Rutherford and quantum mechanics](https://steemit.com/sndbox/@yoon/fun-science-5-the-story-of-rutherford-and-quantum-mechanics)
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Following #5’s double slit experiment
>strange.
But that is not all.
https://steemitimages.com/0x0/https://steemitimages.com/0x0/http://260h.pbworks.com/f/1286738410/figure2.jpg
The place where the electrons arrived when the slits were opened one by one, when opening two slits, the electrons do not arrive.
https://steemitimages.com/0x0/https://upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Double-slit.svg/1200px-Double-slit.svg.png
> Isn’t it strange?
(hmmmm)
> The electrons do not hit each other.
One electron interferes with itself ...
Something unbelievable happened.
But we still have to explain it because the test results are coming out like that.
**How should we explain it?**
> The electrons are split into several pieces and hit each other through the two slits to create an interference pattern.
> That’s not a bad idea.
However, electrons can not be broken down into smaller particles.
There are no electrons cleaved in 1/2 or 1/3.
In the early 1900s,
Niels Bohr and Werner Heisenberg in Copenhagen explained like this.
An electron travels through two slits simultaneously,
It passes through the overlapping trajectory and acts like a wave,
but when it reaches the screen it becomes a particle.
`Collapses` into `particles `
It is called the Copenhagen Interpretation, following the name of the city.
*Copenhagen :The capital of Denmark
> Isn't it strange to call it 'interpretation'?
It is just said, Did you understand that? 'I interpreted it like this'.
In addition to the Copenhagen interpretation, there are many other interpretations ('hidden variable theory', 'multi-world interpretation' ...), and the most accepted by physicists is the Copenhagen interpretation.
(Einstein, who opposed quantum mechanics until the very end, insisted that there are 'hidden variables' that we do not know ... but I’ll talk about this story later)
**Let's get back to Feynman's account.**
>Feynman : “Each of the electrons passes through ‘both' slits.”
“The electrons fired from the gun pass 'all the possible paths' 'at the same time' until they reach the screen..”
>Hmmm. It's an easy conclusion.
“What the hell is that??”
> Is it weird? So scientists did these experiments.
Install an observing device on the intermediate plate and check which slit the electrons pass through.
Let's see the electrons pass through two slits at the same time.
Observing electrons, it pass through only one slit. One electron does not pass through two slits at the same time.
`I thought so`
However, the interference pattern disappeared
after the observation.
Particle pattern comes out.
When the observation device is turned on to see where the electrons pass,the interference disappears.
When the observation device is turned off, interference patterns are created again.
> Why?
If we are looking, the electrons act as a particle, and if not, they move as an wave?
Are you saying that the electrons know it is being observed?
> electrons : It's spreading as an wave "Lulu Rala, I have to move my own way" … but in front of the observer “Oh, someone watching me!"
and change into the particle, It does not make sense, does it?
**Could it be that the behavior we see affects the electrons?**
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https://steemitimages.com/0x0/https://steemitimages.com/DQmUm4F6UJFWed1Vk1ouY6pjajJNPL8KLSMzUvNYWdwKWmp/kc-banner_f.jpg
Please let me know if anything has to be corrected :)
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