Discover how to create a simple solar energy harvester at home using basic household items and electronic components. This ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Jay Holben The next in line on our examination of lighting fixtures is the PAR, which is an ...

The solar concentrator comprises six parabolic mirror reflectors of 16 metre sq area, called Scheffler concentrator. Indian Railways has been taking various eco-friendly initiatives to improve the ...

For the longest time now, I’ve wanted to build a real, proper radio telescope. To me, this means a large parabolic reflector, a feed horn made of brass sheet, coat hanger wire, and at least for the ...

A light rigid structure (of aluminum or other material) which reflects sound to a focus at which a MICROPHONE is placed. This focussing effect is very strong with WAVELENGTHs less than the aperture of ...