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 ...

OTTAWA and SEOUL, Korea, March 08, 2022 (GLOBE NEWSWIRE) -- Telesat (NASDAQ and TSX: TSAT), one of the world’s largest and most innovative satellite operators, and Intellian, a leading provider of ...

Researchers have designed a new LED-based train headlight that uses a tenth of the energy required for headlights using conventional light sources. If operated 8 hours every day, the electricity ...

Borrowing from modern telescope design, researchers have proposed a way to concentrate sunlight to ramp up laser efficiency. Legend tells of Greek engineer and inventor Archimedes using parabolic ...

Parabolic reflectors for solar applications are nice stuff, and making your own is a great project in itself. One of the easiest ways we have seen is that of [GREENPOWERSCIENCE], who uses nothing more ...

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 ...