This light almost looks like it has been repurposed from other random components. It has three LEDs red, green and blue with lenses on them, a patterned disk with just …
Track the sun with a homemade swiveling platform! allows you to rotate your solar panels to always directly face the sun. very easy to make using only 4 pieces of …
Having mentioned the big scary robot-head style CCTV cameras that used to be in many shops in the 70’s, it seemed appropriate to find one and take it to bits. …
Rotary jails were created to minimize personal contact between guards and prisoners. They feature rotating cells that spin on a central axis. ————————————————– BI Video on : BI on : …
How can time be slower and faster at the same time? Thanks to for supporting MinutePhysics This video is about the famous “Twin paradox” of special relativity, and how time …