March 14 coming (Einstein, Hawking, Pi-Day)

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robphy

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At least three items around March 14:

Albert Einstein was born on March 14, 1879.

Among various documents of Einstein (acquired by Hebrew University to update their collection of his documents in time to celebrate 140 years since Einstein's birth), there was a page that had been missing from his attempt at a unified field theory...
https://phys.org/news/2019-03-einstein-puzzle-page-emerges.html
https://phys.org/wire-news/313326070/new-einstein-manuscripts-include-missing-computations-from-unifi.html

ZS5jb20vaW1hZ2VzL2kvMDAwLzEwNC82Mzkvb3JpZ2luYWwvZWluc3RlaW4tdW5pZmllZC10aGVvcnktbGV0dGVyLmpwZw==.jpg





Stephen Hawking died on March 14, 2018

Apparently [I couldn't find anything official looking], a coin for Hawking is about to be minted...

https://www.mirror.co.uk/money/stephen-hawking-50p-coin-launches-14056509
(I think the image shown below is an artist's guess at the design... https://www.changechecker.org/2019/02/18/the-stephen-hawking-50p-what-we-know-so-far/ )
0_CoinMAIN.jpg




Pi Day 3.14...

https://www.piday.org/

(someone will probably mention

https://tauday.com/
https://www.sciencenews.org/blog/science-public/forget-pi-day-we-should-be-celebrating-tau-day )
 

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Wrichik Basu

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Very cool! Big day! How should we celebrate?
Rename Eigenlounge to "PiEiHawk Lounge" for a day.
 

WWGD

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Why don't we celebrate Sqr10 day on March 16? It is a better approximation in the sense that ##|\pi-3.14|> |3.16- \sqrt10| ##
 

BillTre

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Happy Pi Day!

Sadly, I won't be ab;e to come over andhave any of your B-day cake @DaveC426913.
 
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Ah pi(e) :rolleyes:
 

robphy

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Originally from
(Update: see the alternate URL at the end of this post.)

Stephen Hawking coin recalled after equation error is found
01 Apr 2019
hawking-coin-635x423.png

A new coin celebrating the life of Stephen Hawking is being withdrawn because an error has been discovered in the equation for black-hole entropy that appears on the 50p piece.

Released in March by the UK’s Royal Mint, the commemorative coin contains a stylized illustration of a black hole by the artist Edwina Ellis and the Bekenstein-Hawking equation. The formula was derived in 1974 by Hawking, who built on earlier work by the Israeli-American physicist Jacob Bekenstein.

But now, the French mathematical-physics prodigy Avril Lapremiere has found an error in Hawking’s calculations that had gone unnoticed for 45 years.

Lapremiere, who at just 14 is the youngest person to study physics at France’s prestigious Sorbonne University, told Physics World, “I set myself the challenge of deriving black hole entropy from first principles in less than five minutes, but the answer I got was out by a factor of two”. Her result has an “2” in the denominator rather than Hawking’s “4”.
It’s a typical schoolboy error in counting degrees of freedom
Avril Lapremiere
Lapremiere first assumed that she had made a mistake, but quickly realized that the fault was Hawking’s. “It’s a typical schoolboy error in counting degrees of freedom,” she explains, “I’m surprised Hawking made it”.

...
Here's an archived version...

 

davenn

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Last edited:

DrGreg

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