ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Wave equation. This equation describes the behaviour of waves such as sound waves, light waves and water waves. The wave equation for a single dimension was formulated in 1746 by French mathematician Jean-Baptiste le Rond d'Alembert who was studying violin strings. The Swiss scientist Leonhard Euler in 1707 discovered the wave equation in a three space dimension.
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