Another art project from a five-liter bottles — the mouthpiece, which are used by the tourists. You only need to cut off the bottle bottom and the mouthpiece is ready. If “communication” it is alternately applied to the lips (the transmission), then to the ear (receiving), and the range of communication on the water with a pair of such horns, it turns out considerable — under favorable conditions up to a kilometer.
Recommend to read
TRIUMPH: COMFORT PLUS SPEED
"They are not afraid of obstacles!" this is the motto of our magazine a few years ago began to publish descriptions of the designs of a homemade all-terrain of micro-technology,...
“DON QUIXOTE” YAROSLAV YANOVSKY
Amateur microelectroni becomes more and more tangible scale. We can safely say that the passions of individuals it has become a new and, moreover, a massive kind of scientific and...
