Come With Me Inside a Black Hole | Carlo Rovelli Public Lecture

Comments · 233

• HU

  @humanaugmented2525 · 1 year ago

  i save this for a night i cant sleep

  17

• FA

  @Fasterthanlightshipcreator · 1 year ago

  This is outside, inside and all around the box thinking, my ship is under construction.

  6

• PA

  @padiglionetransylvania2770 · 1 year ago

  Straordinaria lezione, solo le menti brillanti riescono a raccontare fenomeni così complessi con un pallone ed un imbuto!

  5

• BA

  @babe8315 · 1 year ago

  Your lecture is worth each and every minute

  3

• HE

  @HeilTec · 1 year ago

  Fantastic footwork.<br><br>I miss a reference to the &apos;Firewall theory&apos;.

  10

• MO

  @mostafatokhy43 · 1 year ago

  He didn&apos;t let me focus in his own words

  3

• DA

  @davidfell5496 · 1 year ago

  That was just awesome. It hurts my brain. Which is good. It talks to we have a view of time that doesn&apos;t understand different perspectives very well.

  1

• QU

  @quantumwormholes8246 · 1 year ago

  Rovelli&apos;s final remarks at <a href="https://www.youtube.com/watch?v=4ADopTdBVTQ&amp;t=2545">42:25</a> perfectly describe how black holes work. Black holes are enormous &quot;energy waterfalls&quot; that, as perceived from the outside, take between 10⁵⁰ and 10¹⁰⁰ years to fall, but, as perceived from the inside, evaporate in a matter of microseconds to days.

  2

• SA

  @sardarbekomurbekov1030 · 1 year ago

  Amazing lecture. Thank you.

  1

• QU

  @QuantumFlux-q2q · 1 year ago

  Intuition in loop quantum gravity (LQG), a theoretical framework attempting to reconcile quantum mechanics with general relativity, often involves physicists sensing fundamental patterns or structures in spacetime at the Planck scale, guiding hypotheses before mathematical rigor or empirical tests (still nascent) confirm them. A key example is Carlo Rovelli’s intuitive contributions to LQG’s development in the 1980s and 1990s. <br>Rovelli, alongside collaborators like Lee Smolin and Abhay Ashtekar, intuited that spacetime at its most fundamental level might not be a smooth continuum, as in classical general relativity, but rather a discrete, quantized network of loops or spin networks. This gut sense stemmed from synthesizing quantum mechanics’ discretization (e.g., energy levels in atoms) with general relativity’s dynamic geometry. Rovelli’s intuition—sparked by grappling with the Wheeler-DeWitt equation and the idea that geometry itself could be quantized—led to the formulation of LQG, where spacetime emerges from interconnected quantum states, like a fabric woven from finite loops. His 1995 work with Smolin on spin networks provided a mathematical basis for this, predicting that area and volume have discrete spectra at the Planck scale (~10⁻³⁵ meters). <br>Psychologically, Rovelli’s intuition relied on implicit pattern recognition, blending quantum and gravitational principles, and a preference for conceptual elegance, likely supported by the insular cortex integrating emotional conviction in a quantized spacetime. For instance, his analogy of spacetime as a “weave” reflects intuitive visual thinking. LQG remains untested due to the extreme scales involved, but Rovelli’s intuitive leaps have driven progress, inspiring ideas like black hole entropy calculations aligning with Hawking’s predictions. <br>In LQG specifically, intuition is crucial because the theory ventures into uncharted territory without direct empirical guidance. However, it risks speculative overreach, requiring rigorous mathematics (e.g., canonical quantization) to anchor it. Rovelli’s intuitive vision of a granular, relational spacetime continues to shape LQG’s pursuit of a quantum theory of gravity.

• MI

  @mimidhof2179 · 1 year ago

  Great talk. And great idea

  1

• EX

  @Exploringthehumanbeing · 1 year ago

  Interesting analogy between a black hole, a basketball and a funnel. Air is compressed inside a basketball like the information is in a black hole. Such compression creates for a small diameter not unlike one end of a funnel. Also, not unlike birthing from a womb, there may be great expanse on the other side.

  1