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, November 29, 2015

How anti-theft tags work - magnetostriction

Anti-theft tags contain a tiny mechanical oscillator that is activated by a magnetic field.  The detectors at a shop's doorway can detect the oscillation magnetically. The tag can be activated and deactivated by magnetizing or demagnetizing it, respectively.

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

Special thanks for your support:
Matthew Hill
Erik Saathoff
Max Loutzenheiser
(better credits titlescreen in the next video!)








Sunday, November 1, 2015

Your toothbrush is worn-out!

See how your trusty toothbrush becomes worn out.

Special thanks to Harri Lähteenmäki  and Johannes S. Zwilling for sending me the smooth zoom footage of the tungsten filament, and showing me how to use After Effects to get a much better effect.  I really appreciate it!  http://www.videocopilot.net/tutorials/earth_zoom/

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

Macrophotgraphy with a microscope objective: https://www.youtube.com/watch?v=HVSjUW2qQ6U

Sunday, October 18, 2015

Ruby laser (and other projects) follow-up

The 8KJ ruby laser in action!  Also, see some other Applied Science projects and what is coming next.

NightHawkInLight on youtube:  https://www.youtube.com/user/Nighthawkinlight

Ben on Embedded.fm: http://embedded.fm/episodes/119

Ruby Laser design process:  https://www.youtube.com/watch?v=VSdUQ4oNKiI

Cookie Perfection machine: https://www.youtube.com/watch?v=8YEdHjGMeho

DIY SEM:  https://www.youtube.com/watch?v=VdjYVF4a6iU

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

Thursday, October 15, 2015

Smooth zoom video from SEM

I manually interpolated the sequence from about 15 single frames from the SEM.  Smooth zooming is not possible on the instrument natively.

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