The more you know about a quantum particle's position, the less you know about its momentum, and vice versa. This is the Heisenberg uncertainty principle, and I thought it applied to quantum particles only, so I didn't mind not understanding why this was so because quantum physics is weird. But 3Blue1Brown says the Heisenberg uncertainty principle applies to non-quantum things to, and in this 20-minute video, he explains why. You can actually get a reasonably good understanding of the uncertainty principle by watching the first two minutes of the video.
Chinese researchers demonstrated quantum entanglement at a record distance, between a satellite and ground stations 1,200 kilometers apart. When objects are quantum entangled, their quantum states are linked. Measuring the state of one affects the state of the other. It’s weird shit. So weird that Einstein called it “spooky action at a distance.” The experiment […]
MinutePhysics responds to CGP Grey’s video “The Trouble with Transporters,” below.
Nicholas writes, “Since Einstein’s day, scientists have been trying to directly observe the wave- and particle- aspects of light at the same time. Now, scientists at a Swiss lab have succeeded in capturing the first-ever snapshot of this dual behavior.”
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