December 29 2020, 00:16

An intriguing video. In it, Derek explains some quantum effects using the example of oil droplets jumping due to vibration on water.

https://www.youtube.com/watch?v=WIyTZDHuarQ

More details here: https://www.youtube.com/watch?v=W9yWv5dqSKk

((Let me remind you of the famous double-slit experiment, which isn’t normally explained (attempts are made through quantum theory). In it, there is a screen with two slits, which is bombarded with electrons. Behind the screen with slits, there is another screen that displays the trace from the electrons that hit the first screen. As a result, an interference pattern forms on that second screen – you have all seen this “comb”, because the waves superpose on each other. This ostensibly demonstrates that electrons behave like a wave while passing through the screen. There is nothing unusual about this.

So, if electrons are emitted one at a time – an interference pattern will form.

But if detectors are placed at the slits, which are supposed to determine through which slit the electron passed, the interference disappears. That is, merely observing the electron changes its behavior (For those new to this – see https://www.youtube.com/watch?v=TT1trz4ANWI )))

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