Demonstration of Spin 1/2

[yuribr]

Most commom spin 1/2 object is the USB connector. You have to place it twice on the same position in order to achieve the perfect match

[watchletter]

I love how casually he says "A positron can be seen as an electron moving backwarsa in time" like its the most basic thing ever

[Oded-Raz]

That's a brilliant, brilliant explanation of an utterly unintuitive physical property. Kudos for achieving such clarity, simplicity, and conciseness.

[billmcdonald]

This is the most elegant visualisation I've seen to date. Excellent work.

[PanduPoluan]

I love it how to illustrate "positrons = electrons moving backward in time", instead of simply rotating the contrivance the other way around, you actually reversed the video. Hence, literally "going back in time" 👍

[Mikeological]

It's amazing that microscopes have advanced so much that we can get such a high resolution image of real individual electrons like this. In color, too!

[gordonsirek]

I'm a retired engineer from the semiconductor industry. This is the best demonstration of "spin 1/2" I've ever seen.

[AnonymousElephant]

The fact that the video is 3 minutes 14 seconds long is the icing on the cake🤯

[malksc]

The most common spin 1/2 object most of us have to wrangle is the 4-stroke internal combustion engine. Suck squeeze bang blow, it takes twice around to get back where you started.

[morkovija]

this is like a secret youtube section of quality, no fluff, no sponsorships, no bs. Thank you

[StraveTube]

Beyond the cleverness of the visualization, I'm also really impressed by how smoothly those wooden models spin. Very well done!

[errorpagenotfound.]

So an electron does have internal structure, little wooden gears.

[JaveyJenkins]

The best approach I've ever seen to explain it, love it!

[charleshudson]

Superb visuals. I'm a physicist and this is the best demo of spin I've ever seen.

[porcuspine]

I have absolutely no idea why it matters that electrons have spin 1/2, but I'm glad I know it now

[meltingzero]

Another way to think about it is to hold a cup in your hand, with its bottom in the palm, and try to rotate it without the coffee spilling out (so your cup has to stay upright during rotation). If you try to do that, you will have to turn the cup under your armpit, stretch the arm out, do a weird turning motion with your hand, and then retrieve the arm. It's a fun thing to try. If you pay attention, you'll notice that the cup will have turned 720° while performing this action.

[toomanyhobbies]

There is no physical representation of spin, it's a purely mathematical "concept" that describes behavior. Nice work here, and I hope it helps folks gave a bit of intuition regarding spin.

[enotdetcelfer]

Bonus points for making the positron spin clip the electron spin clip played backwards instead of just spinning the model in the other direction. They need to have these in classrooms!

[omaririchards]

By far the best spin 1/2 video I've come across in like 3 years. These models are fantastic

[captainchaos]

USB connectors also have spin 1/2. You have to flip it over _twice_ before it will fit.