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Heisenberg's Uncertainty Principle Explained
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Today I am doing an experiment that demonstrates Heisenberg’s Uncertainty Principle.
Sao her I have a green laser and I am firing it down towards the front of the room through
a narrow slit.
Now that slit can be adjusted so it can be made narrower or wider.
And the laser spot is projected on to a screen behind it.
So what do you think is going to happen to this spot on the screen as I narrow the slit?
Well, let’s have a look.
You see exactly what you would expect.
The spot gets narrower and narrower.
The sides are getting cut off by the slit.
It makes complete sense.
And if you stop there you would never realize that Heisenberg’s Uncertainty Principle
is at work.
But if you keep going something strange happens.
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