Just like destroying an ant colony with a magnifying glass, there’s nothing like cooking hot dogs and roasting marshmallows with a nice parabolic reflector. Of course covering an old satellite ...

To me, this means a large parabolic reflector, a feed horn made of brass sheet, coat hanger wire, and at least for the initial experiments, an RTL-SDR dongle. I’ve done the calculations ...

It will be readily understood that this trough with its bent ribs and flat minors forms a perfect parabolic reflector, to which a cylindrical heater, as stated, may be attached for generating ...

Concluding its work, the team said that “the combined effects of parabolic reflectors, fin-enhanced cooling, and TEG integration yield an electrical output power approximately 2.94 times greater ...

This focussing effect is very strong with WAVELENGTHs less than the aperture of the reflector, making it particularly suitable for recording high frequency sounds such as birdsong. Schematic diagram ...