The one component that may be hard to find is the parabolic reflector. You cannot simply use a bowl or other curved object as the precise parabolic shape ensures that sound waves are reflected ...

Parabolic reflectors and ellipsoidal reflectors are used to maximize illumination or projection system output by increasing light source efficiency. These devices resemble small satellite dishes in ...

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 ...

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 ...

Description: disorienting or signaling your location; runs 5.5 hoursDeep-dish parabolic reflector produces a concentrated beam with optimum peripheral illuminationC4 LED technology, impervious to ...

Parabolic space heaters are a type of infrared heater that use a parabolic reflector to aim the heat in a concentrated beam.