What if Singularities DO NOT Exist?
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Top Comments (10)
Roy Kerr, being almost 90 years old, had been looking at this debacle for half a century, and then said “fine, I’ll do it myself”. What a chad.
Kerr is still shaking things up at 90 years old. What a beast.
10:45 It can’t be put into words how utterly disappointed I am that this isn’t called a Ringularity.
Man, he's 90 and still contributing to physics. That's life goals right there.
I read the paper with ever-increasing levels of incomprehension. Eventually I came to "Since we had a preprint of Papapetrou’s paper we put the Kerr metric into his canonical form. The covariant form of the metric, ds2, is then a sum of squares of a suitably weighted orthonormal basis, ds2 = Σ dr2 − ∆ dts + a sin2 θ dφs2 , ∆Σ + Σdθ2 + sin2θ (r2 + a2)dφs − adts2 (13) Σ We stared at this metric for a very short time, gave up and went for coffee. " I did the same.
This definitely feels like a “ all models are wrong (but some are useful)” situation. I think we often forget that the ‘map’ is not the ‘territory’, and should be careful to not define the world by our models, but define our models by the world.
Dear whoever edits/does music for these, ✨ PLEASE make the outro quieter! I love listening to these before bed and the last 15 seconds are so much louder than the entire episode. THANK YOU! 🙏 ✨ Sincerely, A mom who just wants to peacefully learn and fall asleep to science
"Singularity-free spacetime!" - Sounds like a great slogan for a T-shirt.
I love how you don’t treat us viewers like we are stupid, and yet at the same time you find simple ways to convey complex ideas. It’s a fine line to walk, and you do it very well.
I know even Ker himself doesn’t think the ring singularity is physically real, but the idea that Black Holes are inescapable but have a 3D “eye of the hurricane” is so ducking cool
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Top Comments (10)
Roy Kerr, being almost 90 years old, had been looking at this debacle for half a century, and then said “fine, I’ll do it myself”. What a chad.
Kerr is still shaking things up at 90 years old. What a beast.
10:45 It can’t be put into words how utterly disappointed I am that this isn’t called a Ringularity.
Man, he's 90 and still contributing to physics. That's life goals right there.
I read the paper with ever-increasing levels of incomprehension. Eventually I came to "Since we had a preprint of Papapetrou’s paper we put the Kerr metric into his canonical form. The covariant form of the metric, ds2, is then a sum of squares of a suitably weighted orthonormal basis, ds2 = Σ dr2 − ∆ dts + a sin2 θ dφs2 , ∆Σ + Σdθ2 + sin2θ (r2 + a2)dφs − adts2 (13) Σ We stared at this metric for a very short time, gave up and went for coffee. " I did the same.
This definitely feels like a “ all models are wrong (but some are useful)” situation. I think we often forget that the ‘map’ is not the ‘territory’, and should be careful to not define the world by our models, but define our models by the world.
Dear whoever edits/does music for these, ✨ PLEASE make the outro quieter! I love listening to these before bed and the last 15 seconds are so much louder than the entire episode. THANK YOU! 🙏 ✨ Sincerely, A mom who just wants to peacefully learn and fall asleep to science
"Singularity-free spacetime!" - Sounds like a great slogan for a T-shirt.
I love how you don’t treat us viewers like we are stupid, and yet at the same time you find simple ways to convey complex ideas. It’s a fine line to walk, and you do it very well.
I know even Ker himself doesn’t think the ring singularity is physically real, but the idea that Black Holes are inescapable but have a 3D “eye of the hurricane” is so ducking cool