Lord Rayleigh

Lord Rayleigh (John William Strutt) was a British physicist who made fundamental contributions to hydrodynamics, acoustics, and optics. In the context of hydrodynamic stability, he formulated the criterion for centrifugal instability in rotating flows: the flow between rotating cylinders is unstable if the angular momentum decreases outward. This criterion explains the emergence of Taylor vortices and is a classic example of stability analysis. Rayleigh's work on flow stability laid the foundation for studying the transition to turbulence and possible singularities in the Navier–Stokes equations. His contributions were recognized with the 1904 Nobel Prize in Physics for his investigations of gas densities and the discovery of argon.

Biography

John William Strutt, third Baron Rayleigh, was born in 1842. He studied at the University of Cambridge. In 1879 he became Professor of Experimental Physics at Cambridge, then director of the Cavendish Laboratory. From 1887 to 1905 he was Professor of Natural Philosophy at the Royal Institution. He served as President of the Royal Society of London (1905–1908). He was awarded the Nobel Prize in Physics in 1904. He died in 1919.

Key discoveries

Criterion for centrifugal instability of rotating flows (Rayleigh criterion).
Research on acoustic waves and light scattering (Rayleigh scattering).
Discovery of argon jointly with William Ramsay.

Biography

Key discoveries

Related articles