Focal length Updated 2025-07-16
If you pass parallel light.
For a biconvex spherical lens, it is given by:
where:
  • n: f nidnex
Arkarya Updated 2025-07-16
Name of the clade of archaea plus eukarya proposed at: www.frontiersin.org/articles/10.3389/fmicb.2015.00717/full. Much better term than prokaryote as that is not a clade. Let's hope it catches on!
SARS-CoV-2 accessory protein Updated 2025-07-16
Unlike SARS-CoV-2 non-structural protein, these are not needed for test tube reproduction. They must therefore be for host modulation.
SiFive Updated 2025-07-16
Leading RISC-V consultants as of 2020, they are basically trying to become the Red Hat of the semiconductor industry.
SQL function Updated 2025-07-16
François and Joseph Blanc Updated 2025-07-16
Very interesting story! A predecessor to microwave transmission for trading.
Video 1.
How The First Ever Telecoms Scam Worked by Tom Scott (2018)
Source. Amazing how they used control signals to hide the information from officials on either side.
Principal quantum number Updated 2025-07-16
Determines energy. This comes out directly from the resolution of the Schrödinger equation solution for the hydrogen atom where we have to set some arbitrary values of energy by separation of variables just like we have to set some arbitrary numbers when solving partial differential equations with the Fourier series. We then just happen to see that only certain integer values are possible to satisfy the equations.
This is a bit "formal hocus pocus first, action later". But withing that category, it is just barely basic enough that 2021 Ciro can understand something.
Lecture notes transcribed by a student: github.com/avstjohn/qft
18 1h30 lectures.
React JSX Updated 2025-07-16
Night climbing Updated 2025-07-16
Peter Todd's data upload scripts Updated 2025-07-16
tx 243dea31863e94dc2f293489db02452e9bde279df1ab7feb6e456a4af672156a contains another upload script. The help reads:
Publish text in the blockchain, suitably padded for easy recovery with strings

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