Category: physics

An artist’s impression of the mayhem of quarks…

An artist’s impression of the mayhem of quarks and gluons inside the proton. Credits: CERN

The proton, a century on

A century after physicist Ernest Rutherford published work proving the existence of the proton, much remains to be learnt about this ubiquitous particle

What’s It Like When You Fall Into A Blac…

What’s It Like When You Fall Into A Black Hole?

From outside a black hole, all the infalling matter will emit light and always is visible, while nothing from behind the event horizon can get out. But if you were the one who fell into a black hole, what you’d see would be interesting and counterintuitive, and we know what it would actually look like.

Via Forbes – Ask Ethan

Gif info: General relativistic visualization of a supercomputer magneto-hydrodynamic simulation of a disk and jet around a black hole. The disk and jet were supercomputed by John Hawley at the University of Virginia. The general relativistic rendering was done with the Black Hole Flight Simulator.

Remembering Murray Gell-Mann (1929–2019), Inve…

Remembering Murray Gell-Mann (1929–2019), Inventor of Quarks—Stephen Wolfram Blog:

A nice weekend-reading. Murray Gell-Mann as seen by Stephen Wolfram (guest stars: Richard Feynman, George Zweig, Steve Jobs and S. Wolfram himself of course). A very interesting essay at several levels, much more than a typical obituary.

On this day a century ago, General Relativity …

On this day a century ago, General Relativity was experimentally confirmed for the first time.

Image via NYT: 

The Eclipse That Made Einstein Famous

The story is nicely told in the BBC/HBO drama Einstein and Eddington” (2008).

Further reading:

Yuri Kovalenok is a a physics teacher that mak…

Yuri Kovalenok is a a physics teacher that makes remarkable notes of physics. Check it out his Instagram.

Murray Gell-Mann

Murray Gell-Mann

RIP

Pure mathematics is just such an abstraction f…

Pure mathematics is just such an abstraction from the real world, and pure mathematics does have a special precise language for dealing with its own special and technical subjects. But this precise language is not precise in any sense if you deal with real objects of the world, and it is only pedantic and quite confusing to use it unless there are some special subtleties which have to be carefully distinguished.

Silly Mechanical GIFs – The Firstby GarethWasH…

Silly Mechanical GIFs – The First
by GarethWasHere

Exciting ***** moments in physics last 5 years…

Exciting ***** moments in physics last 5 years (in order of discovery):

* Higgs particle

* Gravitational waves, including colliding black holes and neutron stars – might be 6 star 😉

* The M87 black hole image for sure!

All of them took a long time from idea -> experiment (50 and 100 years respectively)

In science in general:

* CRISPR-Cas genetic editing

* AI and deep learning, solving Go, Chess, and protein folding.

* Quantum technology: quantum computers, quantum internet etc.

Conclusion: it’s a golden era for science

M87 Black Hole Size Comparison

M87 Black Hole Size Comparison

xkcd

Alt/title text:

“I think Voyager 1 would be just past the event horizon, but slightly less than halfway to the bright ring.”

More:

– Explain xkcd

– Focus on the First Event Horizon Telescope Results – The Astrophysical Journal Letters – IOPscience

– NASA news: Black Hole Image Makes History; NASA Telescopes Coordinated Observations

NSF Media resources

– Event Horizon Telescope (Official website)