Whispering Dishes
A whisper that can be heard at a distance. Two “satellite dishes” are spaced far apart from one another. In the focal point of the “dish” is a point where speech can be clearly heard.
Catalog number: PSY009
Physical principle
A sound wave striking a concave surface is reflected to the focal point of the surface
Operating instructions
Whisper into the central ring of the dish and your voice will be heard in the ring of the other dish. Talk to another person across the distance, even though no-one around you can hear a thing!
