Four-level laser Updated +Created
Quantum dot Updated +Created
TODO WTF is this? How is it built? What is special about it?
Polymer Updated +Created
Public university Updated +Created
Vacuum engineering Updated +Created
Video 1.
Air-tight vs. Vacuum-tight by AlphaPhoenix (2020)
Source. Shows how to debug a leak in an ultra-high vacuum system. Like every other area of engineering, you basically bisect the machine! :-) By Brian Haidet, a PhD at University of California, Santa Barbara.
LLM game Updated +Created
Direct democracy Updated +Created
Universal Turing machine Updated +Created
A Turing machine that simulates another Turing machine/input pair that has been encoded as a string.
In other words: an emulator!
The concept is fundamental to state several key results in computer science, notably the halting problem.
Monotreme Updated +Created
The weirdest mammal clade: they lay fucking eggs. Only 5 known species alive as of 2020.
Eggs are basal: they simply didn't evolve out of what other reptiles do. From which we conclude that milk came before eggs stopped.
So this is the most basal subclade of mammals.
Etymology: means "single hole" in Greek, because like other reptiles it has a single hole for shit, pee and fucking: the cloaca.
Wall Street Updated +Created
Tree representation Updated +Created
This section is about ways in which you can represent a tree.
Trees are a specific type of graph, so any graph representation also provides a way to represent a tree.
Therefore this section will focus only on methods specific to tress, and which cannot be used for graphs in general.
Mutation Updated +Created
Maser Updated +Created
Video 1.
Principles of the Optical Maser by Bell Labs
. Source. Date: 1963.
Private university Updated +Created
Silicon Valley Updated +Created
Zakir Hussain (musician) Updated +Created
Ravi Shankar Updated +Created
Erhu player Updated +Created

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