What did George Stokes do?
As a physicist, Stokes made seminal contributions to fluid mechanics, including the Navier–Stokes equations and to physical optics, with notable works on polarization and fluorescence. As a mathematician, he popularised “Stokes’ theorem” in vector calculus and contributed to the theory of asymptotic expansions.
What are the contribution Sir George G Stokes in photography?
Perhaps his best-known researches are those that deal with the wave theory of light. His optical work began at an early period in his scientific career. His first papers on the aberration of light appeared in 1845 and 1846, and were followed in 1848 by one on the theory of certain bands seen in the spectrum.
When did George Stokes get married?
Stokes’s scientific interests were very broad, and his correspondence covers a wide range. In 1859 Stokes married Mary Susannah, daughter of Thomas Romney Robinson, an astronomer at Armagh Observatory.
What are some other things Stokes is known for?
Stokes worked in fluid dynamics, optics, spectroscopy, fluorescence, and even physiology. He published a paper on frictional drag in fluids in 1851, in which he discovered the factors that affect the drag on a particle moving through a fluid, whether liquid or air.
What did George Stokes invent?
George Stokes established the science of hydrodynamics with his law of viscosity describing the velocity of a small sphere through a viscous fluid.
What are anti Stokes lines?
Anti-Stokes lines are found in fluorescence and in Raman spectra when the atoms or molecules of the material are already in an excited state (as when at high temperature). Thus, anti-Stokes lines are always of shorter wavelength than that of the light that produces them.
Who proved Navier-Stokes equation?
Jean Leray in 1934 proved the existence of so-called weak solutions to the Navier–Stokes equations, satisfying the equations in mean value, not pointwise.
How Stokes lines are created?
Stoke lines in Raman spectra are mainly caused by the excitation of molecules that are in the ground state. Anti-Stroke lines, on the other hand, are formed when molecules in the excited state are de-excited and returned to the ground state.
Why is Navier-Stokes equation used?
The Navier–Stokes equations are useful because they describe the physics of many phenomena of scientific and engineering interest. They may be used to model the weather, ocean currents, water flow in a pipe and air flow around a wing.
Who is Sir George Stokes?
Sir George Stokes, 1st Baronet Biography. Sir George Gabriel Stokes, 1st Baronet, PRS was an Irish mathematician and physicist. He was noted for his studies on the behaviour of viscous fluids, particularly for his law of viscosity, which describes the motion of a solid sphere in a fluid, and for Stokes’ theorem, a basic theorem of vector analysis.
How many children did George Stokes have?
George Stokes married Mary Susanna Robinson on July 4, 1857 at St Patrick’s Cathedral in Armagh. The couple had five children, namely, Arthur, Susanna, Isabella, William and Dora.
What is the contribution of Stokes?
Stokes, who was appointed Lucasian Professor of Mathematics at Cambridge University in 1849, earlier had published his first papers on fluid motion and the steady motion of incompressible fluids (1842 and 1843) and his work on the friction of fluids in motion and the equilibrium and motion of elastic solids (1845).
When was the first book published by Stokes?
Stokes’s mathematical and physical papers were published in five volumes; the first three under his own editorship in 1880, 1883, and 1901 and the last two under that of Sir Joseph Larmor. Stokes also wrote On Light (1887) and Natural Theology (1891).