Separable state Updated +Created
Spintronics Updated +Created
Video 1.
Introduction to Spintronics by Aurélien Manchon (2020)
Source.
Andrew the Apostle Updated +Created
Book of Genesis Updated +Created
Elongation factor Updated +Created
Inner mitochondrial membrane Updated +Created
Mitochondrial matrix Updated +Created
S&P 500 Updated +Created
Second Updated +Created
Spark-gap transmitter Updated +Created
The first type of device that allowed sending Morse code without wires, as opposed to the wired electrical telegraph that previously existed.
Naval communications was one of the first major applications, as you can't have wires on boats!
Wireless voice transmission came about with modulation.
Video 1.
Spark-gap transmitter at the at the The Museum of Radio and Technology Jeri Ellsworth (2017)
Source.
Superconducting quantum computer need non-linear components Updated +Created
Non-linearity is needed otherwise the input energy would just make the state go to higher and higher energy levels, e.g. from 1 to 2. But we only want to use levels 0 and 1.
The way this is modelled in by starting from a pure LC circuit, which is an harmonic oscillator, see also quantum LC circuit, and then replacing the linear inductor with a SQUID device, e.g. mentioned at: youtu.be/eZJjQGu85Ps?t=1655 Video "Superconducting Qubits I Part 1 by Zlatko Minev (2020)".
SVG 1.0 Updated +Created
SVG fonts Updated +Created
The major problem with SVG is text computer fonts. If you make an image with text that depends on one computer font and it is not present in the viewer's machine, it will use some other font, which may overlap with other elements of the image. Some libraries Matplotlib solve this by writing characters as curves, but this produces large files and unsearchable text. The inability of different computer platforms to standardize fonts that must always be present is a major issue.

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