Where are the White Holes? - Sixty Symbols

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Featuring Tony Padilla and Ed Copeland.

(Check out “Fantastic Numbers and Where to Find Them”)

This project features scientists from The University of Nottingham

Video by Brady Haran and Pete McPartlan

[timseguine]

65 digits of pi are enough to calculate the circumference of the known universe to within a Planck length. So the natural question is: does the number pi even meaningfully exist physically in our universe? If even using the largest possible circle you can think of observing, pi is in practice basically indistinguishable from a rational number.

[nickjohnson]

I completely understand how and why Cantor went insane.

[JonnyCM]

Real treat to see Ed Copeland again, another excellent video Brady.

[andycarlson]

Gotta love Tony. It's so incredibly British that he didn't plug the crap out of his book :)

[GeoffryGifari]

The longer these channels progress the more Brady resembles Jared Harris' Professor Moriarty

[Quiltfish]

Love the engagement bait of spelling it "Googleplex"😂 Totally fell for it

[gencshehu]

This one of a couple of channel's I have hit the bell icon on, and this video is a perfect example of why that is so. Cheers mate!

[reservetruls]

Yes, I need more questions like these being answered by people like Tony and Ed. They might even deserve their own channel.

[tjspeirs]

Aw I was hoping Brady would repeat Prof Padilla saying "the universe resets itself" like in the original tree 3 vid 😂 cool vid!

[mniee]

Whenever Sixty Symbols uploads a video is a great day!

[zhadoomzx]

I love tony... he brings across the craziest maths ideas across in such a funny way.

[firstplacelast]

I love the idea of "holding my nose" to pass through the singularity at the center of a black hole.

[Fleshcut]

"I don't know my white holes very well" - Ed Copeland, 2024

[SpaveFrostKing]

If you went back in time a few hundred years and asked the leading scientists "what's the largest possible number that can mean something in our universe?" you'd get an answer laughably smaller than what you'd get today. Who knows what the answer will be in a few hundred years, or a few thousand.

[ticketforlife]

Idk. The other day I thought about an insanely large number. I define it as such:
Take the planck space, and think of it as a point that can interact with other planck spaces. Now, think about how many planck spaces in the whole universe are in one snapshot. Then, each planck time forward, calculate ALL the possible interactions and variations that can happen from snapshot A to snapshot B after one planck length. After that, go in time t until the end of end of time, and add the planck spaces that will be created from the expansion of the universe.
The result is a mad mad mad big number. And yet, it pales in comparison to Graham's.

[hesgrant]

Awesome video, can't wait for more! Tony and Ed are fantastic

[METALSCAVENGER]

Tree (3) does not have any applicaion in physical sense unelss the universe is infinite and then every number

[invariant]

brady at the end looks like professor moriarty from the sherlock Holmes game of shadows moive

[bobtk]

One of my math profs was fond of saying: It's vacuously true. I.e. It holds in theory, but there exist no examples.

[shaunnichols]

The Red Dwarf explanation of White Holes has worked for me all this time. I believe