Think you understand Quantum Physics? Try This.

I was recently reminded of a quantum puzzle that tripped me up and I wanted to share it with everyone to see if you could figure it out. Let’s have a look.

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#science #sciencenews #quantumphysics #physics

[DMUSIC-bsru]

To quote Enrico Fermi: "Having listened to your lecture I am still confused. But on a higher level."

[michaelblacktree]

My first question was "How do they know it's interaction free?" Thanks for explaining that.

[yeroca]

I guess it's easy to lose sight of the fact that the detector has its own quantum limitations. I wouldn't have thought of that.

[TehJumpingJawa]

I didn't 'understand' it as thoroughly as you explained it, but "interaction-free measurement" had already set off alarm bells in my intuit understanding of QM.

[whiteboar]

I'm an engineer but I got it immediately because it is like the measurement uncertainity Is reduced in a Kalman filter. In the measurement the wave function doesn't collapse completely, but It Is chopped in two, and this IS interaction.

[kurtmueller]

There are some videos that I have running in the background while I do something else. And then there is this video.
Thank you!

[yianniskanellopoulos]

What a coincidence! I was having a conversation with a friend about the observation or fail to observe a particle, when you post this. My day now is ruined I cannot stop thinking about it 😆
Thank you for the video!

[rolfuhlenberg]

Sabine, thanks for another great video. I really liked this "quiz" style of video and would love to see more in the future!

[maxborn]

lol you jumping the frames while talking about possibility of macroscopic objects making quantum jumps 😆

[StellaNoxFr]

Wow, this is mindblowing. My understanding of measurement in quantum physics reached a new level. TY

[barrystockdoesnotexist]

I noticed some macroscopic zig-zagging going on, and it involved a pink-to-purple/gray gradient shirt with buttons.

[lucasjohnson]

This is a nice thought. My first inclination was interactions with virtual photons, but I’m still learning about that odd concept.

[alieninmybeverage]

No cats were harmed in the making of this video.

[biankacosma]

Thx Sabine for the link to Dicke's paper. Always good to read primary sources

[dr_shrinker]

I don’t understand quantum physics, I just like listening to Sabine. 🤩 She’s rad!

[carlospenalver]

This video replaces my favourite previous Sabbine video. They keep getting better. My favourite before this one was the video of Sabine learning how to ride a tricycle which also had training wheels on them but she still fell. Great content as always 😁

[aaronjennings]

Macroscopic realism, a concept introduced by Leggett and Garg, is a classical worldview that posits that macroscopic objects can be in definite states and can be measured without affecting their state or subsequent dynamics. This is in contrast to quantum mechanics, which allows for superpositions and entanglement. The Leggett-Garg inequality is a mathematical test that can be used to determine if a system exhibits macroscopic realism. Experimental violations of this inequality have been demonstrated using various systems, including superconducting quantum interference devices and massive particles. These experiments have pushed the boundaries of macroscopic realism, showing that even large objects can exhibit quantum behavior.

[GK-hcyl]

I like the way you share how you arrived at your favorites from the different periods in your life. There is a season for everything.

[dwavenminer]

There are two things I understand about quantum physics:
1. I know practically nothing about quantum physics.
2. I understand it even less.

[LightDiodeNeal]

That's why I love this channel, every video is a "Thinker", and a quiz too probably. Funny I was thinking those photons were going very straight!
10 ⭐ stars!
NEAL