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




Sunday, October 4, 2015

How to choose a cleaning solution

A general overview of cleaning solvents and techniques.

Solvent selection and effectiveness:  http://www.productionmachining.com/articles/selecting-solvents-for-precision-cleaning

Dan Gelbart on coatings and surface cleaning:  https://www.youtube.com/watch?v=x7onZGqrYyY



Sunday, August 30, 2015

Drill Bit in Electron Microscope

This video shows a microcontroller-based image capture system that makes it easier for me to record animations with my scanning electron microscope.

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

The Teensy microcontroller: https://www.pjrc.com/store/teensylc.html

Download Teensy firmware via Google Drive

Download Processing.org script for viewing image on PC

Sunday, July 26, 2015

Control light with magnets and olive oil?! (Faraday effect)

See how olive oil and magnets can control the brightness of light via the Faraday effect.
Get your iron-on Applied Science logo here: https://www.patreon.com/AppliedScience

Measure Verdet constant of olive oil: http://www.sestindia.org/wp-content/uploads/2013/12/Volume-2Number-3PP-362-368.pdf

Plastic film polarizers: http://www.apioptics.com/linear-polarizers-spec.html

Faraday effect: https://en.wikipedia.org/wiki/Faraday_effect

Monday, July 20, 2015

Liquid Nitrogen Generator - Overview

This liquid nitrogen generator uses a Stirling-cycle cryocooler that was pulled from a cellular phone tower.  It was used to cool a superconducting RF filter that aids cell communications.  The cryocooler is able to pump enough heat away from its cold end that air will liquify and drip into a vacuum flask for storage.

Jeri's video at Maker Faire 2010: https://www.youtube.com/watch?v=14B8LynojI4