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
HONDA CR-V 2006
The first multi-purpose four-wheel drive car with the name HONDA CR-V was released in 1995 and in 11 years of mass production sold in 160 countries with a circulation of 2.5 million...
NEW OLD COIL RUHMKORFF
Induction coil, in the last century invented Rumkorem, and is now used in experiments in physics. But now it is not fully satisfy the requirements of physical experiment creates...
