Ben Krasnow

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...

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

I show how to convert an area measurement problem into a mass measurement problem that is easier to solve.  In general, this idea of conver...

I built a microbalance based on a design by Paul Grohe: http://www.youtube.com/watch?v=n90whRO-ypE It is has a precision of about 5 microgra...