Author Archive

Doppler Gesture Sensing in JavaScript

Doppler Gesture Sensing in JavaScript mentions an interesting paper on Doppler gesture sensing and  implementation of Doppler gesture sensing in JavaScript that works right in the browser (runs on Chrome). This JavaScript library generates a sine wave at 20 kHz that’s played through the computer’s speakers. The frequency is high enough that it’s pretty much inaudible. While the

Fluorescent lights safety and updates

I just saw old fluorescent light replaced with new one. This was the old one: This is the new one: In new one there is electronic ballast. What are the problem with old ones? Fire danger caused by failing capacitors and by heating of different parts of lamp (tube ends and ballast) when old tube