About Me

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I previously worked on Virtual Reality and other hardware at Valve.  I currently work at Google[x].

Prior to starting at Valve, I built computer peripherals such as keyboards, mice, and joysticks that were designed to be used inside MRI machines.  My company, Mag Design and Engineering, sold these devices directly to researchers at academic institutions who used them to publish scientific papers in peer-reviewed journals.

After work, I spend time on many different types of projects that usually involve circuit design, machining, material selection, and general fabrication/hacking.  My favorite place to be is my home workshop.

ben dot krasnow at gmail




Monday, May 25, 2015

The physics of floating screwdrivers

I explain how a jet of air can float a common screwdriver.

Plans to make your own fluid turbulence disc: http://makezine.com/projects/rheoscopic-coffee-table/

Support more Applied Science videos: https://www.patreon.com/AppliedScience

Nighthawkinlight's video about floating screwdrivers: https://www.youtube.com/watch?v=fceUcRfbCcQ

Wednesday, May 6, 2015

Shrinking paper money with ammonia

Support Applied Science on Patreon: https://www.patreon.com/AppliedScience

As a follow-up to my previous video on bending wood, I show how ammonia can shrink paper money.  The money is dipped into liquid anhydrous ammonia, then dried, and the process is repeated about a dozen times.  As the money dries, it shrinks due to the surface tension of the boiling/evaporating ammonia.

Video on bending wood:
Making aerogel:

Monday, April 27, 2015

Extreme wood bending with ammonia

Bending wood with ammonia is not really DIY, but I show the process, which is extremely effective.  There is also a commercial product that is pre-treated flexible wood, which hardens after being clamped in the desired shape.

Hmm, it seems the product may no longer be available -- I can't find it at Inventables.

Pre-treated flexible wood product patent:

Sunday, April 19, 2015

Distilling pure anhydrous ammonia

I have a few upcoming projects that require anhydrous ammonia. In this video, I show how to distill it from "ammonia water" similar to common glass cleaner.

Thursday, April 9, 2015

Magnetic Propulsion

This is a neat little demo that shows how permanent magnets can be used to create propulsion along a conductive copper track