# Mathematician:John William Strutt

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## Mathematician

English physicist who won the $1904$ Nobel Prize in Physics with William Ramsay for the discovery of argon.

Discovered the phenomenon now called Rayleigh Scattering, which explains why the sky is blue.

Predicted the existence of Rayleigh waves.

## Nationality

English

## History

- Born: 12 November 1842 in Langford Grove, Maldon, Essex, England, UK
- Died: 30 June 1919 in Terling Place, Witham, Essex, England, UK

## Theorems and Definitions

- Rayleigh-Jeans Law (with James Hopwood Jeans)
- Rayleigh Scattering
- Rayleigh Wave
- Rayl (unit of acoustic impedance)
- Rayleigh Theorem, also known as Beatty's Theorem, for Samuel Beatty
- Rayleigh-Lorentz Pendulum (with Hendrik Antoon Lorentz)
- Plateau-Rayleigh Instability (with Joseph Antoine Ferdinand Plateau)
- Rayleigh-Gans Approximation (with Richard Martin Gans)

Results named for **John William Strutt** can be found here.

Definitions of concepts named for **John William Strutt** can be found here.

## Publications

- 1877:
*The Theory of Sound vol. I* - 1878:
*The Theory of Sound vol. II*

## Notable Quotes

*Examples ... which might be multiplied*ad libitum*, show how difficult it often is for an experimenter to interpret his results without the aid or mathematics.*- -- Quoted in 1937: Eric Temple Bell:
*Men of Mathematics*:*They Say: What Say They? : Let Them Say*

- -- Quoted in 1937: Eric Temple Bell:

## Also known as

**John William Strutt, $3$rd Baron Rayleigh** is also (perhaps better) known as **Lord Rayleigh**.

## Sources

- John J. O'Connor and Edmund F. Robertson: "John William Strutt": MacTutor History of Mathematics archive

- 1937: Eric Temple Bell:
*Men of Mathematics*... (previous) ... (next):*They Say: What Say They? : Let Them Say*