He also discovered the phenomenon now called Rayleigh scattering, explaining why the sky is blue, and predicted the existence of the surface waves now known as Rayleigh waves.

This is described by Rayleigh scattering, an effect that creates Earth's blue sky and red sunsets.

Rayleigh scattering causes the blue hue of the daytime sky and the reddening of the sun at sunset

Rayleigh scattering is more evident after sunset.

The beam of a 5 mW green laser pointer is visible at night partly because of Rayleigh scattering on various particles and molecules present in air.

Rayleigh scattering is a function of the electric polarizability of the particles.

Rayleigh scattering of sunlight in the atmosphere causes diffuse sky radiation, which is the reason for the blue color of the sky and the yellow tone of the sun itself.

Rayleigh scattering applies to particles that are small with respect to wavelengths of light, and that are optically " soft " ( i. e. with a refractive index close to 1 ).

Rayleigh scattering can be defined as scattering in the small size parameter regime.

The amount of Rayleigh scattering that occurs for a beam of light depends upon the size of the particles and the wavelength of the light.

The Rayleigh scattering cross-section is given by

The Rayleigh scattering coefficient for a group of scattering particles is the number of particles per unit volume N times the cross-section.

Rayleigh scattering also occurs from individual molecules.

In this case, the Rayleigh scattering intensity for a single particle is given by

The amount of Rayleigh scattering from a single particle can also be expressed as a cross section σ.

Rayleigh scattering is a good approximation of the manner in which light scattering occurs within various media for which scattering particles have a small size parameter.

Craters on Mars and the Moon are named in his honour as well as a type of surface wave known as a Rayleigh wave.

The asteroid 22740 Rayleigh was named in his honour on 1 June 2007.

The dynamics of the motion of the bubble is characterized to a first approximation by the Rayleigh-Plesset equation ( named after Lord Rayleigh and Milton Plesset ):

The Rayleigh number is named after Lord Rayleigh and is defined as the product of the Grashof number, which describes the relationship between buoyancy and viscosity within a fluid, and the Prandtl number, which describes the relationship between momentum diffusivity and thermal diffusivity.

The distribution is named after Lord Rayleigh.

A deer was included in the coat of arms of Rayleigh Urban District Council, and in the early 2000s, a new pub was named the " Roebuck ".

The Second World War Convoy rescue ship Empire Rest was originally laid down as a Castle class corvette to have been named HMS Rayleigh Castle after the ruins.

Perhaps the most common and general such theorem is Lorentz reciprocity ( and its various special cases such as Rayleigh-Carson reciprocity ), named after work by Hendrik Lorentz in 1896 following analogous results regarding sound by Lord Rayleigh and Helmholtz ( Potton, 2004 ).

This type of circularly symmetric optical resonance is called a Whispering Gallery Mode, after Lord Rayleigh coined the term.

* 1894 Lord Rayleigh and William Ramsay discover argon by spectroscopically analyzing the gas left over after nitrogen and oxygen are removed from air

The figures show the power variation over 1 second of a constant signal after passing through a single-path Rayleigh fading channel with a maximum Doppler shift of 10 Hz and 100 Hz.

It is also known as Rayleigh's energy theorem, or Rayleigh's Identity, after John William Strutt, Lord Rayleigh.

Some years after Waterston's death, Lord Rayleigh ( Secretary of Royal Society at that time ) managed to dig it out from the archives of the Royal Society.

Henry was the son and heir of Robert fitz Swein of Essex, who was favoured by King Edward the Confessor and who built Rayleigh Castle after 1066, and grandson of Swein, son of Robert FitzWimarc.

The Rayleigh – Taylor instability, or RT instability ( after Lord Rayleigh and G. I. Taylor ), is an instability of an interface between two fluids of different densities, which occurs when the lighter fluid is pushing the heavier fluid.

A German woman and independent scientist, Agnes Pockels, wrote to Lord Rayleigh shortly after his publication in 1890.

In applied mathematics and mechanical engineering, the Rayleigh – Ritz method ( after Walther Ritz and Lord Rayleigh ) is a widely used, classical method for the calculation of the natural vibration frequency of a structure in the second or higher order.

Rayleigh Castle ( also known as Rayleigh Mount ) was a masonry and timber castle built near the town of Rayleigh in Essex, England in the 11th century shortly after the Norman conquest.

In the 1890s ( around 100 years later ) two British physicists, William Ramsay and Lord Rayleigh, realized that their newly discovered inert gas, argon, was responsible for Cavendish's problematic residue ; he had not made an error.

In 1900, the British physicist Lord Rayleigh derived the λ < sup >− 4 </ sup > dependence of the Rayleigh – Jeans law based on classical physical arguments.

Lord Rayleigh first described dynamic soaring in 1883 in the British journal Nature:

The incident of the burning of the library led to a protest note by British scientists, which was signed also by eight distinguished British scientists, namely William Bragg, William Crookes, Alexander Fleming, Horace Lamb, Oliver Lodge, William Ramsay, Baron Rayleigh and J. J. Thomson, and in which it was assumed that the war propaganda mentioned corresponded to real behavior of German soldiers.

The more useful aircraft in its inventory were sent to France under the command of Major G H Rayleigh on 16 August 1914, to carry out reconnaissance in support of the British Expeditionary Force.

John William Strutt, 3rd Baron Rayleigh, OM ( 12 November 1842 – 30 June 1919 ) was an English physicist who, with William Ramsay, discovered argon, an achievement for which he earned the Nobel Prize for Physics in 1904.

He was succeeded, as the 4th Lord Rayleigh, by his son Robert John Strutt, another well known physicist.

* 1842 – John Strutt, 3rd Baron Rayleigh, English physicist, Nobel laureate ( d. 1919 )

* June 30 – John Strutt, 3rd Baron Rayleigh, English physicist, Nobel Prize laureate ( b. 1842 )

* November 12 – John Strutt, 3rd Baron Rayleigh, English physicist, Nobel Prize laureate ( d. 1919 )

Other admirers include physicist Lord Rayleigh and Nobel laureate Philip Anderson.

* John Strutt, 3rd Baron Rayleigh, Nobel Prize winning physicist for the discovery of argon, died in 1919 at Terling Place, Witham.

* June 30-John William Strutt, 3rd Baron Rayleigh ( born 1842 ), Nobel Prize-winning physicist.

* 1938-39: Robert Strutt, 4th Baron Rayleigh, physicist and son of nobel prize winning John William Strutt, 3rd Baron Rayleigh

* November 12-John William Strutt, 3rd Baron Rayleigh ( died 1919 ), Nobel Prize-winning physicist.

| 22740 Rayleigh || || John William Rayleigh, 19th-20th-century English physicist and Nobelist