Ernest Rutherford st Baron Rutherford of Nelson
Ernest Rutherford, 1st Baron Rutherford of Nelson, OM, FRS (August 30, 1871 - October 19, 1937), called "father" of nuclear physics, pioneered the orbital theory of the atom notably in his discovery of rutherford scattering with his Gold Foil experiment.
Rutherford was born at Spring Grove, (now in Brightwater), near Nelson, New Zealand. He studied at Nelson College and Canterbury College, with three degrees and two years of research at the forefront of electrical technology.
In 1895 Rutherford travelled to England for postgraduate study at the Cavendish Laboratory, University of Cambridge (1895-1898), resident at Trinity College. There he briefly held the world record for the distance over which wireless waves were detected. During the investigation of radioactivity, he coined the terms alpha and beta rays.
In 1898 Rutherford was appointed to the chair of physics at McGill University where he did the work which gained him the 1908 Nobel Prize in Chemistry. He had demonstrated that radioactivity was the spontaneous disintegration of atoms. This is ironic given his famous remark "In science there is only physics; all the rest is stamp collecting.". He noticed that in a sample of radioactive material, it invariably took the same amount of time for half the sample to decay — its "half-life" — and created a practical application for this phenomenon, using this constant rate of decay as a clock, which could then be used to help determine the actual age of the Earth, which was much older than most scientists at the time believed.
In 1907 he took the chair of physics at Manchester University. There he discovered the nuclear nature of atoms, and was the world's first successful alchemist: he converted nitrogen into oxygen. While working with Niels Bohr (who figured out that electrons moved in specific orbits) Rutherford theorized about the existence of neutrons, which could compensate for the repulsive effect of the positive charge of protons by increasing the attractive nuclear forces, and thus keeping the nuclei of heavy atoms from breaking apart.
In 1917 he returned to the Cavendish as Director. Under him, Nobel Prizes were awarded to Chadwick for discovering the neutron, Cockcroft and Walton for splitting the atom using a particle accelerator and Appleton for demonstrating the existence of the ionosphere.
His research, along with that of his protege, Sir Mark Oliphant was instrumental in the convening of the Manhattan Project.
He was knighted in 1914, was admitted to the Order of Merit in 1925, and in 1931 was created Baron Rutherford of Nelson. He appears on New Zealand's hundred dollar note and has appeared on postage stamps of Russia (1971), Canada (1971), Sweden (1968) and New Zealand (1971 and 1999). In 1997 the element Rutherfordium was named in his honour. Also craters on Mars and the Moon were named after him.
| Preceded by: New Creation | Baron Rutherford of Nelson | Succeeded by: Extinct |
External links
- http://www.rutherford.org.nz
- http://www.dnzb.govt.nz
- http://www.nobel.se
- http://www.orcbs.msu.edu/radiation/radhistory/ernestrutherford.html
- http://www.pbs.org/wgbh/aso/databank/entries/bpruth.html
- http://www.nzedge.com/heroes/rutherford.html
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Categories: 1871 births | 1937 deaths | British scientists | New Zealand scientists | Nobel Prize in Chemistry winners | Peers | Physicists