Rizwan Virk
speaker
3,730 appearances
3 recordings
3 series
first heard May 2024
last heard 17 Jun
Rizwan Virk’s voice in public audio — every appearance, attributed to the second.
Trend
recordings per month · last 12 monthsRecordings per month over the last 12 months — 2 in all, peaking in Jun 2026 with 1.
Appearances
But suppose in the middle there's a black hole or a galaxy, something that's a gravitationally large object.
And so the light has to go to the left or to the right of that object to get here.
And we have telescopes here on Earth that can measure whether it went left or right.
So this is a thought experiment that was proposed by my favorite physicist of the 20th century, a guy named John Wheeler.
And so he said, well, when would the decision have to be made about whether the light goes to the left or to the right?
And suppose it's halfway between us and the quasar.
So suppose that's a half a billion light years away.
So the decision would have had to have been made half a billion years ago, so 500 million years ago.
We're talking about the past, but the deep past.
We're talking about dinosaur age, right?
Maybe even before the dinosaurs.
But what this experiment shows us is it's not until the light is measured here on Earth
and we measure what's called its polarization, which is the same as saying whether it went left or right, that the decision about whether it goes left or right is made.
Now, it's made now when we measure it.
Now, that's just really bizarre because that's saying there's more than one possible path.
And so I wasn't sure I was interpreting this right.
And I went back and I found an obscure quote from Schrodinger, who, again, one of the forefathers of quantum mechanics, the Schrodinger wave equation.
And he said, in an obscure speech, he said, effectively, when we're collapsing the probability wave, which is one of the interpretations of what happens for the observer effect, is that
You have all these probabilities and then you come down to just one.
That's the one you observe.
Showing 1081–1100 of 3,730 · page 55 of 187
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