Luhuhul - Everlasting

Ask Ethan: Is Spacetime Really A Fabric?

“I’d like somebody to finally acknowledge and admit that showing balls on a bed sheet doesn’t cut it as a picture of reality.”

Okay, I admit it: visualizing General Relativity as balls on a bedsheet doesn’t make a whole lot of sense. For one, if this is what gravity is supposed to be, what pulls the balls “down” onto the bedsheet? For another, if space is three dimensional, why are we talking about a 2D “fabric” of space? And for another, why do these lines curve away from the mass, rather than towards it?

It’s true: this visualization of General Relativity is highly flawed. But, believe it or not, all visualizations of General Relativity inherently have similar flaws. The reason is that space itself is not an observable thing! In Einstein’s theory, General Relativity provides the link between the matter and energy in the Universe, which determines the geometric curvature of spacetime, and how the rest of the matter and energy in the Universe moves in response to that. In this Universe, we can only measure matter and energy, not space itself. We can visualize it how we like, but all visualizations are inherently flawed.

Come get the story of how to make as much sense as possible out of the Universe we actually have.

I just arrived home from seeing Declan McKenna!! 🇲🇽👍🏼 this kid is amazing, so much better than i thought!! And i had the opportunity to see him so close!!! 😍😍👏🏼👏🏼

soft  ♡

Georgia O’Keeffe, Cup of Silver, 1939

Humanity did not prove that the sun is, in fact, a star until 1838.

Why do you find that so hard to believe? You saw what happened here.

Loving Vincent (2017) Directed by Dorota Kobiela and Hugh Welchman

and that's what happens when you are mentally ill xd

Berlin Alexanderplatz | Rainer Werner Fassbinder | 1980

Part 12: Die Schlange in der Seele der Schlange

Barbara Sukowa

Anne and Josie evolution 3x07

Something I've always appreciated is that Josie is the only person who tells Anne that she has paint on her face. The way of being of both is different but that doesn't mean that they cannot learn from each other.

Todo lo que tengo es real - Natalia Lafourcade (English and Spanish subtitles)