Argon ( αργος, Greek meaning " inactive ", in reference to its chemical inactivity ) was suspected to be present in air by Henry Cavendish in 1785 but was not isolated until 1894 by Lord Rayleigh and Sir William Ramsay in Scotland in an experiment in which they removed all of the oxygen, carbon dioxide, water and nitrogen from a sample of clean air.

Others who anticipated the work of Lavoisier include Jean Rey ( 1583 – 1645 ), Joseph Black ( 1728 – 1799 ), and Henry Cavendish ( 1731 – 1810 ).

The idea of a body so massive that even light could not escape was first put forward by geologist John Michell in a letter written to Henry Cavendish in 1783 of the Royal Society:

* Henry Jones ( writer ) who wrote under the pseudonym " Cavendish "

In 1766 – 81, Henry Cavendish was the first to recognize that hydrogen gas was a discrete substance, and that it produces water when burned, a property which later gave it its name: in Greek, hydrogen means " water-former ".

It was proposed that the force on magnetic poles, by Johann Tobias Mayer and others in 1760, and electrically charged objects, by Henry Cavendish in 1762, obeyed an inverse-square law.

* 1882 – Thomas Henry Burke and Lord Frederick Cavendish are stabbed and killed during the Phoenix Park Murders in Dublin.

Before them, in 1784, the English chemist and physicist Henry Cavendish had discovered that air contains a small proportion of a substance less reactive than nitrogen.

Nitrogen was also studied at about the same time by Carl Wilhelm Scheele, Henry Cavendish, and Joseph Priestley, who referred to it as burnt air or phlogisticated air.

* 1731 – Henry Cavendish, British scientist ( d. 1810 )

File: Cavendish-walk. jpg | Henry Cavendish ( 1731-1810 ): greatest English chemist and physicist of his age, researched composition of the atmosphere, the properties of different gases, the synthesis of water, the law of electrical attraction and repulsion, a mechanical theory of heat, calculated the weight of the Earth in the Cavendish experiment, determined the universal gravitational constant

In 1766, Henry Cavendish ( 1731 – 1810 ) discovered hydrogen.

image: Cavendish Henry signature. jpg |< center > Henry CavendishScientist, discoverer of hydrogen

* Henry Cavendish, chemist ( recognized Hydrogen as its own elemental substance )

* Wimbledon: Henry Cavendish Jones convinces the " All England Croquet Club " to replace a croquet court with a lawn tennis court.

* February 24 – Henry Cavendish, British scientist ( b. 1731 )

* October 10 – Henry Cavendish, English scientist ( d. 1810 )

It was developed by Norwegian industrialist and scientist Kristian Birkeland along with his business partner Sam Eyde in 1903, based on a method used by Henry Cavendish in 1784.

The gravitational constant appears in Newton's law of universal gravitation, but it was not measured until seventy one years after Newton's death by Henry Cavendish with his Cavendish experiment, performed in 1798 ( Philosophical Transactions 1798 ).

* Henry Cavendish – British scientist noted for his discovery of hydrogen

In January 1781, before Georg Ohm's work, Henry Cavendish experimented with Leyden jars and glass tubes of varying diameter and length filled with salt solution.

In 1766, the British scientist Henry Cavendish had discovered hydrogen, by adding sulphuric acid to iron, tin, or zinc shavings.

F. R. S., " The Life of Edward Jenner MD LLD FRS ", Henry Colburn, London, 1827.

Henry Austin Bruce, 1st Baron Aberdare GCB, PC, FRS ( 16 April 1815 – 25 February 1895 ) was a British Liberal Party politician, who served in government most notably as Home Secretary ( 1868 – 1873 ) and as Lord President of the Council.

Thomas Henry Huxley PC FRS ( 4 May 1825 – 29 June 1895 ) was an English biologist ( anatomist ), known as " Darwin's Bulldog " for his advocacy of Charles Darwin's theory of evolution.

* Henry Martyn Taylor FRS

Sir William Henry Perkin, FRS ( 12 March 1838 – 14 July 1907 ) was an English chemist best known for his discovery, at the age of 18, of the first aniline dye, mauveine.

Henry Walter Bates FRS FLS FGS ( Leicester, 8 February 1825 – London, 16 February 1892 ) was an English naturalist and explorer who gave the first scientific account of mimicry in animals.

Henry Walter Bates FRS 1825-1892: explorer, scientist and darwinian.

Robert Dundas, 2nd Viscount Melville KT, PC, FRS ( 14 March 1771 – 10 June 1851 ) was a British statesman, the son of Henry Dundas, the 1st Viscount.

John Henry Coates, FRS ( born 26 January 1945 ) is a mathematician who holds ( since 1986 ) the position of Sadleirian Professor of Pure Mathematics at the University of Cambridge in the United Kingdom.

) FRCP, the son of Sir Henry Acland, 1st Baronet MD FRS.

Edward Henry Stanley, 15th Earl of Derby KG, PC, FRS ( 21 July 1826 – 21 April 1893 ), known as Lord Stanley from 1844 to 1869, was a British statesman.

Henry Goulburn PC FRS ( 19 March 1784 – 12 January 1856 ) was an English Conservative statesman and a member of the Peelite faction after 1846.

Henry Petty-Fitzmaurice, 3rd Marquess of Lansdowne KG, PC, FRS ( 2 July 1780 – 31 January 1863 ), known as Lord Henry Petty from 1784 to 1809, was a British statesman.

Henry More FRS ( October 12, 1614 – September 1, 1687 ) was an English philosopher of the Cambridge Platonist school.

Colonel William Henry Sykes, FRS ( 25 January 1790 – 16 June 1872 ) was an Indian Army officer, politician, Indologist and ornithologist.

William Henry Barlow FRS FRSE FICE MIMechE ( 10 May 1812 – 12 November 1902 ) was an English civil engineer of the 19th century, particularly associated with railway engineering projects.

Sir Henry Thomas De la Beche FRS ( 10 February 1796 – 13 April 1855 ) was an English geologist and palaeontologist who helped pioneer early geological survey methods.

John Henry Constantine Whitehead FRS ( 11 November 1904 – 8 May 1960 ), known as Henry, was a British mathematician and was one of the founders of homotopy theory.

Francis Henry Egerton, 8th Earl of Bridgewater FRS ( 11 November 1756 – 11 February 1829 ), known as Francis Egerton until 1823, was a noted British eccentric, and supporter of natural theology.

Henry Howard Molyneux Herbert, 4th Earl of Carnarvon, PC, DL, FSA, FRS ( 24 June 1831 – 29 June 1890 ), known as Lord Porchester from 1833 to 1849, was a British politician and a leading member of the Conservative Party.

Philip Henry Stanhope, 5th Earl Stanhope FRS ( 30 January 1805 – 24 December 1875 ), styled Viscount Mahon between 1816 and 1855, was a British politician and historian.

Edmund Brisco " Henry " Ford FRS Hon.