Capillary waveA capillary wave is a wave traveling along the phase boundary of a fluid, whose dynamics and phase velocity are dominated by the effects of surface tension. Capillary waves are common in nature, and are often referred to as ripples. The wavelength of capillary waves on water is typically less than a few centimeters, with a phase speed in excess of 0.2–0.3 meter/second. A longer wavelength on a fluid interface will result in gravity–capillary waves which are influenced by both the effects of surface tension and gravity, as well as by fluid inertia.
Bernhard RiemannGeorg Friedrich Bernhard Riemann, né le à Breselenz, royaume de Hanovre, mort le à Selasca, hameau de la commune de Verbania, royaume d'Italie, est un mathématicien allemand. Influent sur le plan théorique, il a apporté de nombreuses contributions importantes à la topologie, l'analyse, la géométrie différentielle et au calcul, certaines d'entre elles ayant permis par la suite le développement de la relativité générale. Bernhard Riemann est né à Breselenz, un village du royaume de Hanovre.
