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Hi Team, 

Our last Patreon hangout with Matt was pretty awesome. Posting it here so everyone can enjoy!

Thanks,

ST

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August Patreon Hangout

Comments

Anonymous

Matt! You can never look stupid. If I can understand 1/100th of what you say I feel pretty good. I had a question though following on from the conformal cyclic cosmology episode - I wondered if at the heat death of the universe as everything cools to absolute zero, whether it makes sense that everything would begin to become part of a giant Bose-Einstein condensate, and therefore act as a single quantum state - and perhaps that the point of re-birth of a new universe would be when everything was part of this state, and then there was a random quantum event that broke it, or something similar, but I have probably misunderstood everything that you have explained and are randomly putting words together, or like medieval theologians just creating a false complexity and world view based on false assumptions and understanding. (I am seem to have an almost flat-earther level of understand of physics compared to you guys).

Max Eliaser

This was a great conversation, and I really enjoyed watching it! One question about the graviton, since it came up in the video: what is it about a spin of 2 that makes a physicist think, "that must be gravity." Or alternatively, what is it about gravity that makes a physicist think, "that must have a spin of 2."

Anonymous

The Wikipedia entry on gravitons has a pretty concise answer (https://en.wikipedia.org/wiki/Graviton).

Max Eliaser

Hah, that's a much better article than the last time I read it!

Anonymous

That was a great explanation of time. It was helpful to remind myself, and visualize the photon clock, or rather, clocks. Each particle experiencing a unique impact on a micro scale, and on the macro scale, they all contribute to matter aging. When visualizing gravity and time, I find it helpful to consider the typical grid-like image that is often used, and how the gridlines are more closely spaced in areas of higher gravity. So, whether something is stationary or moving, it boils down to how many gridlines, or how much space, is interacted with. Speed forces the photon within the photon clock, or ball bounced on a moving train to move through more space. With gravity, the photon clock and train are stationary, but the photon clock's face, or span between the floor and the thrower's hand, have more space squished within it, so it's essentially the same effect - it's moving through more space. We all know I'm preaching to the choir. And please let me know if something seems off with my layman's interpretation.