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
TO HELP MUSIC LOVERS
Widespread, cassette radio. Storage cassettes make a simple stand as shown in the figure.
THE MIRACLE STOVE
In one of the spring gear of the Central television can be enthusiasts of technical creativity familiarized with the universal camp stove, or rather, a kitchen that has designed and...
