Protease Updated +Created
Public-key cryptosystem Updated +Created
X Æ A-12 Updated +Created
Zephyr (operating system) Updated +Created
Zephyr is cool. Its installation setup is annoying. But the project is cool.
Afghanistan Updated +Created
Cofactor (biochemistry) Updated +Created
Enzyme inhibitor Updated +Created
Justine Musk Updated +Created
Nota bene Updated +Created
Signaling theory Updated +Created
Wheeler-Feynman absorber theory Updated +Created
What they presented on richard Feynman's first seminar in 1941. Does not include quantum mechanics it seems.
E. Coli whole cell simulation Updated +Created
Ethnic minorities in China Updated +Created
As of 2020 (TODO starting when) the Chinese government officially recognizes 55 minorities.
These minorities actually had different legal statuses, e.g. they were exempt from the One Child Policy.
Exif tag Updated +Created
Human essential amino acid Updated +Created
Number of elements of an elliptic curve over a finite field Updated +Created
AGI-complete Updated +Created
Term invented by Ciro Santilli to refer to problems that can only be solved once we have AGI.
It is somewhat of a flawed analogy to NP-complete.
Gaussian function Updated +Created
Kibble balance Updated +Created
The Kibble balance is so precise and reproducible that it was responsible for the 2019 redefinition of the Kilogram.
It relies rely on not one, but three macroscopic quantum mechanical effects:
How cool is that! As usual, the advantage of those effects is that they are discrete, and have very fixed values that don't depend either:
One downside of using some quantum mechanical effects is that you have to cool everything down to 5K. But that's OK, we've got liquid helium!
The operating principle is something along:
Then, based on all this, you can determine how much the object weights.
Video 1.
How We're Redefining the kg by Veritasium
. Source.
Video 2.
The Kibble Balance, realizing the Kilogram from fundamental constants of nature by Richard Green
. Source. Presented in 2022 for a CENAM seminar, the Mexican metrology institute. The speaker is from the Canadian metrology institute
Video 3.
The Watt balance and redefining the kilogram by National Physical Laboratory
. Source. Nothing much, but fun to hear Kibble talking about his balance in beautiful English before he passed.

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