SQL tree traversal by Ciro Santilli 37 Updated +Created
Spin 2 by Ciro Santilli 37 Updated +Created
Theorized for the graviton.
Proper time by Ciro Santilli 37 Updated +Created
Hartree-Fock method by Ciro Santilli 37 Updated +Created
Planet in the Solar System by Ciro Santilli 37 Updated +Created
Spontaneous parametric down-conversion by Ciro Santilli 37 Updated +Created
Phenomena that produces photons in pairs as it passes through a certain type of crystal.
You can then detect one of the photons, and when you do you know that the other one is there as well and ready to be used. two photon interference experiment comes to mind, which is the basis of photonic quantum computer, where you need two photons to be produced at the exact same time to produce quantum entanglement.
Video 1.
One Photon In, TWO Photons Out by JQInews (2010)
Source.
Mentions that this phenomena is useful to determine the efficiency of a single photon detector, as you have the second photon of the pair as a control.
Also briefly describes how the input energy and momentum must balance out the output energy and momentum of the two photons coming out (determined by the output frequency and angle).
Shows the crystal close up of the crystal branded "Cleveland Crystals Inc.". Mentions that only one in a billion photon gets scattered.
Then shows their actual optical table setup, with two tunnels of adjustable angle to get photons with different properties.
Video 2.
How do you produce a single photon? by Physics World (2015)
Source.
Very short whiteboard video by Peter Mosley from the University of Bath, but it's worth it for newbs. Basically describes spontaneous parametric down-conversion.
One interesting thing he mentions is that you could get single photons by making your sunglasses thicker and thicker to reduce how many photons pass, but one big downside problem is that then you don't know when the photon is going to come through, that becomes essentially random, and then you can't use this technique if you need two photons at the same time, which is often the case, see also: two photon interference experiment.
XY sex-determination system by Ciro Santilli 37 Updated +Created
Michael Moritz by Ciro Santilli 37 Updated +Created
Video 1.
Michael Moritz interview by Stanford Graduate School of Business (2019)
Source. The dude is quirky.
so the solution is:
We notice that the solution has continuous spectrum, since any value of can provide a solution.
RNA-dependent RNA polymerase by Ciro Santilli 37 Updated +Created
Makes RNA from RNA.
Used in Positive-strand RNA virus to replicate.
I don't think it's present outside viruses. Well regulated organisms just transcribe more DNA instead.
Renormalization group by Ciro Santilli 37 Updated +Created
Protein complex by Ciro Santilli 37 Updated +Created
14 1 hours 20 minute lectures.
The video resolution is extremely low, with images glued as he moves away from what he wrote :-) The beauty of the early Internet.
No-Nonsense Quantum Field Theory by Jakob Schwichtenberg (2020) by Ciro Santilli 37 Updated +Created
This book really tries to recall basic things to ensure that the reader will be able to understand the more advanced ones.
Sometimes it goes a little bit overboard, like defining what a function does several times.
But Ciro Santilli really prefers it when authors error on the side of obvious.
This is very widely used in courses as of 2020, it became kind of the default book.
Unfortunately, this approach bores Ciro Santilli to death. Or perhaps is too just advanced for him to appreciate. Either of those.
800+ pages.
Quantum Theory of Radiation by Fermi (1932) by Ciro Santilli 37 Updated +Created
Binary translation by Ciro Santilli 37 Updated +Created

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