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Jour un, ép. 2 - Olivia "Vers l'inconnu et l'au-delà"
7 Plays3 months ago
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Transcript
00:00:09
jim_prod
Hey everyone, welcome to another episode of Science Unveiled. I'm your host, Alex, and today we have a really cool topic that has puzzled scientists for, like, centuries. Joining me is Dr. Sarah Thompson, a physicist from the University of Nowhere. Welcome, Sarah.
00:00:26
Sara
Thanks, Alex. ah Great to be here.
00:00:30
jim_prod
So, we're talking about the double slit experiment today, right?
00:00:35
Sara
Yeah, that's right. The double slit experiment is um one of those classic experiments in quantum mechanics that really messes with your mind.
00:00:45
jim_prod
Right, so can you explain it in simple terms for our listeners?
00:00:50
Sara
Sure. So imagine you have a light source and you shine it at a barrier with ah two slits in it. If you put a screen behind it, you'd expect to see um two lines of light, right?
00:01:03
jim_prod
Yeah, that makes sense.
00:01:05
Sara
But what actually happens is um you see this pattern of bright and dark bands, which we call an interference pattern. It's kind of like what you'd see if you ah dropped two pebbles in a pond and watched the ripples intersect.
00:01:19
jim_prod
So, um, why is that so weird?
00:01:22
Sara
Well, it's weird because when you shine, like, one photon at a time, you'd still get the interference pattern. It's like the photon is going through both slits at once and interfering with itself. But if you try to measure which slit it goes through, the interference pattern disappears. It just acts like a particle then.
00:01:44
jim_prod
Wow, um that's really mind-blowing. So does that mean particles can be both waves and particles?
00:01:51
Sara
Yeah, exactly. It's what we call wave-particle duality. It's one of those fundamental principles of quantum mechanics. Particles like, uh, photons or electrons can exhibit properties of both waves and particles depending on how we observe them.
00:02:10
jim_prod
That sounds really complicated. Why does observing them change their behavior?
00:02:16
Sara
That's one of the big mysteries. It's something to do with the measurement process itself. When we observe the particle, we kind of force it to choose a state. It's really weird and not fully understood even now.
00:02:29
jim_prod
Wow, thanks Sarah. That was super fascinating and definitely something to think about. Thanks for joining us today.
00:02:38
Sara
My pleasure, Alex. Always happy to talk about the weirdness of quantum mechanics.
00:02:43
jim_prod
Thanks to everyone for listening. We'll catch you next time on Science Unveiled.