Gravitational Waves Explained | Barry Barish and Lex Fridman

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GUEST BIO:
Barry Barish is a theoretical physicist at Caltech and the winner of the Nobel Prize in Physics.

PODCAST INFO:

SOCIAL:

[tachiroakisu]

I am henceforth going to refer to all errors in my code as "infinities".

[thomasedward]

“Are we supposed to be ok with that?” - legend

[markwiebner]

4 dimensions hurt my head a bit, but I get the dimension of time. How do you measure a thousand times smaller than a proton? This is great stuff. Thanks Lex! As a MS science teacher of 25 years I always look for inspirational content. You never disappoint! Thanks for being so authentic!

[voice_cope_art]

@15:36 I don't know why Barry doesn't understand this question...if you're closer to the source, the amplitude of the gravitational wave gets larger, so the effect gets stronger and if you get close enough you get ripped apart

[michaelcoulter]

What a truly brilliant man. The fact that he can explain this phenomenon in a way even I can understand says it all. Great interview.

[JakeRoque]

So cool to get to learn things like this. Thanks Lex.

[alohadave]

I really enjoy video podcasts that strain the brain to ponder extremely complicated concepts. WOW!

[justinroca]

I don't consider myself a stupid person, but this is so far beyond me it's just Incredible

[soulfuzz]

One of the best in a long time, well done

[abhijeetptl]

Definitely going to re-watch this multiple times.

[captain]

16:26 - 17:00 This is EXACTLY how I feel when I learn new physics stuff. Existential crisis, followed by, "And we're suppose to be ok with this?!?!"

[johnterry]

A little awkward type of questioning but important ones. Great examples by the guest.

[justlikeyouful]

Lex, human intelligence is a musical instrument. Every note up a down the spectrum has not only merit but is essential.

[ciaociaociao]

You know that a podcast is ahead pf the curve when the clips are 27 minutes long

[christophermichael]

Amazing! Ty so much (ripples in the pond are also referred to as interference patterns for anyone who isn't familiar)

[dustinoneil]

Finally I can tell Lex in this conversation feels exactly like me with most of these conversations, doesn’t have a clue what Barry is talking about!!!

[ltzhk]

Lex, great interview and great work. I have a question in mind that I feel was not adressed. How can space time distortion induced by gravitational waves be measured or experienced from within that same distorted space time frame of reference? Doesn't the interferometer, or any other meaurement device, become distorted itself?

[Chemical_Truth]

If space-time can bend, what medium does it bend into? Space-time is 4 dimensions, so we need a fifth dimension that it can bend into? The 2D surface of a trampoline can only bend because it exists in 3D. Also, if gravity is a wave, even if it's very tiny, you can use resonance to amplify it?

[JakesOnline]

Here's an easy way to understand it. If the Sun disappeared, we would continue to see sunlight for 8 minutes. We would also remain in the Sun's orbit for 8 minutes because gravitational waves travel at the speed of light.

[CraneArmy]

the bowling ball on the trampoline analogy never seemed like a good analogy for gravity.