About Me

My Photo

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




Saturday, September 3, 2011

Magnesium burning inside dry ice

This has been done many times, but is still fun and easy. This is the first time that I have tried it myself. The reaction produces Magnesium Oxide and Carbon

2 Mg(s) + CO2 yields 2 MgO(s) + C(s)


  1. It would have been interesting to see what the dry ice looked like after the burn, ie: re-open the block.

  2. The light before it dies out it my favorite. The one without the lights on. Reminds me of a candle burning out. I like it, thanks for sharing.