Shock waves

Shock waves are the sound waves that a metronome or a watch propagates through the atmosphere, but they are also the waves emitted by colours, for example, and many other objects besides, which our pendulum easily detects. By dividing the number of these shock waves by 2,500,000, we find the exact wavelength of all these waves in nm (nanometres), that is to say, the actual wavelength, as estimated by scientists …