Recent content by Jeffwiz

Hey! I've killed at least 4 via soldering heat and hooking up inadvertently to the wrong power pac. Who knows about static charges.

the problem of beam divergence is exactly the inverse of astronomical telescope optics ie. resolution. All astronomers want a big diameter and a short focal lenght lens as these make small bright images on their sensor (film or ccd) think of that sensor as your laser diode (it's a bit of a brain...

Please take this seriously. I am a 61 yrold retired Industrial Engineer and I have destroyed my lungs digging subway tunnels in China (1990-1995). This bed I am in is my prison now and when a flying insect gets in the room it can drive me nuts, not being able to chase it dow with the traditional...