If you happen to be in the market for a small artificial sun, you may be interested to know that for about $1300, you can get a tennis-ball-sized LED array that outputs 120,000 lumens.
Abstract: To shorten the design cycle of the 2-D axisymmetric electron gun, a new design methodology is reported in this article. Unlike the method of iterating the electron gun structure through ...
At first glance, it may look like [Rybitski]’s 7-segment RGB LED clock is something that’s been done before, but look past the beautiful mounting. It’s not just stylishly framed; ...