How to chemically strengthen glass (eg Gorilla Glass)

I describe why glass fails, and how to improve its apparent strength via a simple chemical treatment. This process is used to create Gorilla Glass.

Ultra low-temperature cascade refrigeration system repair

I bought a -100*C refrigerated cold trap from a surplus sale, which was not operational.  In this video, I describe how the unit works after recharging its second stage with R1150 (ethylene) refrigerant.

Savant RVT4104 - (manual) http://phoenix.tuwien.ac.at/chemistry/Gebrauchsanweisungen/SAVANT%20Vapor%20Trap.pdf

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How to electropolish aluminum

I show a basic electropolishing technique that requires no special equipment and has proven to work well on aluminum (aluminium).

Mathematical integration without calculus

I show how to convert an area measurement problem into a mass measurement problem that is easier to solve.  In general, this idea of converting measurement problems into different spaces is very powerful, and may prove useful in the future.