John Strutt, 3rd Baron Rayleigh

Biography

John William Strutt was born on 12 November 1842 at Langford Grove, Maypole Road in Maldon, England, as the son of John James Strutt, 2nd Baron Rayleigh, and Clara Elizabeth La Touche. In his early years, he suffered from frailty and poor health.

Strutt attended Eton College and Harrow School (each for only a short period), before entering Trinity College, Cambridge, in 1861, where he studied mathematics. In 1865, he received his B.A. (Senior Wrangler and Smith's Prizeman), and was elected a Fellow of Trinity College the following year. He obtained an M.A. in 1868.

In 1871, Strutt resigned from his fellowship to marry Evelyn Balfour, the daughter of James Maitland Balfour, with whom he had three sons. In 1873, on the death of his father, he inherited the Barony of Rayleigh.

In 1879, Rayleigh was appointed Cavendish Professor of Physics at the University of Cambridge. In 1883, he first described dynamic soaring by seabirds in Nature. The following year, he resigned as Cavendish Professor to continue his experimental work at Terling Place.

From 1887 to 1905, Rayleigh was Professor of Natural Philosophy at the Royal Institution. During this period, he carefully and precisely measured atomic mass of oxygen and hydrogen, and by 1892 he moved on to nitrogen. By isolating nitrogen in different ways he discovered a small but significant difference, which indicated a heavier inert gas present in the air besides nitrogen. William Ramsay joined this research topic, and in August 1894 they discovered argon. In 1904, Rayleigh and Ramsay were awarded the Nobel Prizes in Physics and Chemistry, respectively; both for research related to the discovery of argon.

Around 1900, Rayleigh developed the duplex (combination of two) theory of human sound localisation using two binaural cues, interaural phase difference (IPD) and interaural level difference (ILD) (based on analysis of a spherical head with no external pinnae). The theory posits that we use two primary cues for sound lateralisation, using the difference in the phases of sinusoidal components of the sound and the difference in amplitude (level) between the two ears.

Rayleigh received the degree of Doctor mathematicae (honoris causa) from the Royal Frederick University on 6 September 1902, when they celebrated the centennial of the birth of mathematician Niels Abel.

From 1905 to 1908, Rayleigh served as President of the Royal Society. From time to time, he participated in the House of Lords; however, he spoke up only if politics attempted to become involved in science.

During the First World War, Rayleigh was President of the Advisory Committee for Aeronautics, which was located at the National Physical Laboratory and chaired by Richard Glazebrook.

In 1919, Rayleigh served as President of the Society for Psychical Research. As an advocate that simplicity and theory be part of the scientific method, he argued for the principle of similitude.

Rayleigh died on 30 June 1919 in Witham at the age of 76, His son Robert, a physicist, succeeded him as Baron Rayleigh.

Religious views

Rayleigh was an Anglican. Though he did not write about the relationship between science and religion, he retained a personal interest in spiritual matters. When his scientific papers were to be published in a collection by the Cambridge University Press, Strutt wanted to include a quotation from the Bible, but he was discouraged from doing so, as he later reported:

Still, he had his wish and the quotation was printed in the five-volume collection of scientific papers. In a letter to a family member, he wrote about his rejection of materialism and spoke of Jesus Christ as a moral teacher:

Rayleigh held an interest in parapsychology and was an early member of the Society for Psychical Research (SPR). He was not convinced of spiritualism but remained open to the possibility of supernatural phenomena. Rayleigh was the president of the SPR in 1919. He gave a presidential address in the year of his death but did not come to any definite conclusions.

Recognition

Memberships

Awards

Orders

Commemoration

A lunar crater, as well as a Martian crater, are named in his honour. The asteroid 22740 Rayleigh was named after him on 1 June 2007. | access-date=23 July 2008 | author-link=Jet Propulsion Laboratory

Sir William Ramsay, his co-worker in the investigation to discover argon, described Rayleigh as "the greatest man alive" while speaking to Lady Ramsay during his last illness.

H. M. Hyndman said of Rayleigh that "no man ever showed less consciousness of great genius".

In honour of Lord Rayleigh, the Institute of Acoustics sponsors the Rayleigh Medal (established in 1970) and the Institute of Physics sponsors the John William Strutt, Lord Rayleigh Medal and Prize (established in 2008).

Many of the papers that he wrote on lubrication are now recognized as early classical contributions to the field of tribology. For these contributions, he was named as one of the 23 "Men of Tribology" by Duncan Dowson.

There is a memorial to him by Derwent Wood in St Andrew's Chapel at Westminster Abbey.

Publications

• The Theory of Sound vol. I (London : Macmillan, 1877, 1894) (alternative link: Bibliothèque Nationale de France OR (Cambridge: University Press, reissued 2011, )
• The Theory of Sound vol.II (London : Macmillan, 1878, 1896) (alternative link: Bibliothèque Nationale de France) OR (Cambridge: University Press, reissued 2011, )
• Scientific papers (Vol. 1: 1869–1881) (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )
• Scientific papers (Vol. 2: 1881–1887) (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )
• Scientific papers (Vol. 3: 1887–1892) (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )
• Scientific papers (Vol. 4: 1892–1901) (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )
• Scientific papers (Vol. 5: 1902–1910) (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )
• Scientific papers (Vol. 6: 1911–1919) (Cambridge : University Press, 1899–1920, reissued by the publisher 2011, )

References

References

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