Why was this so rarely used as of 2020s compared to ISBNs? It would have been perfect for helping find obscure records from Chinese traditional music and Indian classical music!
But instead we have Discogs, which is not too bad.
Islam has some really nice things in it.
The way it was perverted to be used as a tool for terrorism by some is a great tragedy.
Ciro Santilli especially appreciates the ideas of
- Ramadan
- modesty, e.g. as shown by everyone wearing similar clothes
- symbolism being explicity forbiden, much like for Protestantism
- huge importance given to giving to the poor
One of the sequencers made by Oxford Nanopore Technologies.
The device has had several updates since however, notably of the pore proteins which are present in the critical flow cell consumable.
Official documentation: nanoporetech.com/products/minion (archive)
The following images of the device and its peripherals were taken during the experiment: Section "How to use an Oxford Nanopore MinION to extract DNA from river water and determine which bacteria live in it".
The knowledge that light is polarized precedes the knowledge of the existence of the photon, see polarization of light for the classical point of view.
The polarization state and how it can be decomposed into different modes can be well visualized with the Poincaré sphere.
One key idea about photon polarization is that it carries angular momentum. Therefore, when an electron changes orbitals in the Schrödinger equation solution for the hydrogen atom, the angular momentum (as well as energy) change is carried out by the polarization of the photon!
Quantum Mechanics 9b - Photon Spin and Schrodinger's Cat II by ViaScience (2013)
Source. - clear animations showing how two circular polarizations can make a vertical polarization
- a polarizer can be modelled bra operator.
- light polarization experiments are extremely direct evidence of quantum superposition. Individual photons must be on both L and R states at the same time because a V filter passes half of either L or R single photons, but it passes all L + R photons
First we hand-wave some intuition. Then we prove. That's the way to teach.
Open Source 8.5 Digit Voltmeter from CERN by Marco Reps (2021)
Source. 
Ciro Santilli's favorites, including album when they're more of a one hit wonder:
- Allan Holdsworth
- Joe Satriani
- Jean-Luc Ponty
- Chick Corea
- Billy Cobham
- Pat Metheny
- Keith Jarrett (Arbor Zena)
- John Abercrombie (Timelesss)
- Bill Brisell (Blues Dream)
- Larry Coryell (Spaces)
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