The atmospheric pressure on the mylar film will take care of the job, and magically you get a nearly-parabolic reflector ready for work. In this other video, you can see the reflector in action ...

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 ...

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 ...

One of the incidental pleasures of a trade show like NAB is the option to wander the exhibits and enjoy the process of discovering new ideas which might be too specialist to make big headlines, but ...

Also called a "dish" or "mirror," parabolic antennas are used for satellite signals and planetary telescopes. The reflective mirror design can also emit energy such as in a flashlight or ...