Archer is the eldest son of Rev. Richard Archer (1796? – 1849), perpetual curate of Maghera hamlet, County Down, and his wife, Jane Matilda (née Campbell). Nothing is known of his education, though his two younger brothers attend Trinity College Dublin (TCD). At some point, he apparently appears to become estranged from his family.
Archer moves to Dublin around 1846, where for many years he pursues a business career. He achieves fame as a naturalist, and in 1849, is one of the twelve founder members of the Dublin Microscopical Club, of which he is the secretary and moving spirit for many years. Between 1858 and 1885 he writes over 230 scientific papers on Irish fauna and flora in the Quarterly Journal of Microscopical Science, the vast majority of which are short notes on desmids collected in Ireland. Sometimes the same article is published in two or more journals.
Archer is a member of the Dublin University Zoological Association and is elected a member of the Royal Irish Academy (MRIA) on January 10, 1870, and Fellow of the Royal Society (FRS) in 1875, on which occasion it is stated that he has “a knowledge of the minute freshwater organisms unparalleled among British naturalists and perhaps not surpassed for any other country.”
Archer begins a new career when he becomes librarian of the Royal Dublin Society (RDS) in January 1877. The bulk of the society’s library is being taken over by the state to form the National Library of Ireland. He becomes the chief librarian of the new institution and has the task of overseeing the changes. Most of the ideas put forward in his pamphlet, Suggestions as to public library buildings . . . with especial reference to the National Library of Ireland (Dublin, 1881), are used by Sir Thomas Newenham Deane in his design for its new building, which opens in August 1890. His adoption of the Dewey Decimal Classification system and the inception of a dictionary catalogue, both novel in the day, are to prove of lasting value to users of the library.
In poor health, Archer retires in 1895. He dies, unmarried, at his home, 52 Mount Street Lower, Dublin, on August 14, 1897. He is a shy, modest man, who declines professorships at the Royal College of Science for Ireland and at Trinity College Dublin (TCD), and who is nominated for membership of the Royal Irish Academy (RIA) and the Royal Society without his knowledge.
Synge attends St. Andrew’s College, Dublin and in 1915 enters Trinity College Dublin (TCD). He is elected a Foundation Scholar his first year, which is unusual as it is normally won by more advanced students. While an undergraduate at TCD, he spots a non-trivial error in Analytical Dynamics of Particles and Rigid Bodies, a textbook by E. T. Whittaker, who had recently taught there, and notifies Whittaker of the error. In 1919 he is awarded a BA in Mathematics and Experimental Physics, and also a gold medal for outstanding merit. In 1922 he is awarded an MA, and in 1926 a Sc.D., the latter upon submission of his published papers up to then.
In 1918, Synge marries Elizabeth Eleanor Mabel Allen. She is also a student at TCD, first of mathematics, then of history, but family finances forced her to leave without graduating. Their daughters Margaret (Pegeen), Cathleen and Isabel are born in 1921, 1923 and 1930 respectively. The middle girl grows up to become the distinguished Canadian mathematician Cathleen Synge Morawetz.
Synge is appointed to the position of lecturer at Trinity College, and then accepts a position at the University of Toronto in 1920, where he is an assistant professor of mathematics until 1925. There he attends lectures by Ludwik Silberstein on the theory of relativity, stimulating him to contribute “A system of space-time co-ordinates,” a letter in Nature in 1921.
Synge returns to Trinity College Dublin, in 1925, where he is elected to a fellowship and is appointed the University Professor of Natural Philosophy (later to be known as “physics”). He is a member of the American Mathematical Society and the London Mathematical Society. He is treasurer of the Royal Irish Academy in 1929. He goes back to Toronto in 1930, where he is appointed Professor of Applied Mathematics and becomes Head of the Department of Applied Mathematics. In 1940, he supervises three Chinese students, Guo Yonghuai, Qian Weichang and Chia-Chiao Lin, who later become leading applied mathematicians in China and the United States.
Synge returns to Ireland in 1948, accepting the position of Senior Professor in the School of Theoretical Physics at the Dublin Institute for Advanced Studies. This school had been set up in 1940, and had several outstanding members, including Erwin Schrödinger, a contributor to quantum mechanics, who is also a Senior Professor.
Synge is one of the first physicists to seriously study the interior of a black hole, and his early work is cited by both Martin David Kruskal and George Szekeres in their independent discoveries of the true structure of the Schwarzschild black hole. Synge’s later derivation of the Szekeres-Kruskal metric solution, which is motivated by a desire to avoid “using ‘bad’ coordinates to obtain ‘good’ coordinates,” has been generally under-appreciated in the literature, but is adopted by Chandrasekhar in his black hole monograph.
In pure mathematics, Synge is perhaps best known for Synge’s theorem, which concerns the topology of closed orientable Riemannian manifold of positive sectional curvature. When such a space is even-dimensional and orientable, the theorem says it must be simply connected. In odd dimensions, it instead says that such a space is necessarily orientable.
Synge also creates the game of Vish in which players compete to find circularity (vicious circles) in dictionary definitions.
Synge retires in 1972. He receives many honours for his works. He is elected as a fellow of the Royal Society of London in 1943. He is elected as a fellow of the Royal Society of Canada, and in 1943 is the first recipient of the society’s Henry Marshall Tory Medal, as one of the first mathematicians working in Canada to be internationally recognised for his research in mathematics. In 1954 he is elected an honorary fellow of Trinity College Dublin. He is president of the Royal Irish Academy from 1961 until 1964. The Royal Society of Canada establishes the John L. Synge Award in his honour in 1986.
Synge dies on March 30, 1995, in Dublin, exactly one week after his ninety-eighth birthday.
Parsons is born in London on June 13, 1854, the youngest among eleven children of the famous astronomerWilliam Parsons, 3rd Earl of Rosse, of Parsonstown (now Birr), King’s County (now County Offaly) and Mary Parsons (née Field), a Yorkshire heiress. Only four sons survive to adulthood. He is strongly influenced by his father, who encourages him to use the workshops at the Birr Castleobservatory, and he is tutored at home by some of the assistant astronomers before entering Trinity College Dublin in 1871. He transfers to St. John’s College, Cambridge, and upon graduation in 1877 as eleventh wrangler in a class of thirty-six studying mathematics, he takes the unusual step for the son of an earl, of becoming a premium apprentice at the Elswick Engine and Ordnance Works of Sir William George Armstrong at Newcastle upon Tyne. In the period following this he develops a unique high-speed steam engine, and a torpedo which is powered by a gas turbine. He joins Clarke Chapman at Gateshead as a partner in 1884. In a matter of months he files patents for the world’s first effective steam turbine. These embody many novelties, but the key feature is an electricity generator rated at 6 kW and designed to run, directly coupled, at the astonishing speed of 18,000 rpm.
Parsons is not satisfied that his partners’ efforts to promote turbine development are sufficiently aggressive, and in 1889 he leaves to establish his own company, C. A. Parsons & Company, at Heaton near Newcastle upon Tyne. The price of this impetuous action is the loss of access to his original patents. He quickly establishes alternative designs and by 1892 he has built a turbo-alternator with an output of 100 kW for the Cambridge Electricity Company. Exhausting to a condenser, it has a steam consumption comparable with the best steam engines. Even his 1884 patents envisage applying turbines to marine propulsion, but it is 1893 before he can embark on the design of a suitable demonstration boat of 40 tons. By using careful tests on models, he perfects the hull shape and predicts the power requirements. At this time he recovers his 1884 patents and even wins the very rare prize of an extension for five years, which is a measure of the perceived national importance of his invention.
A syndicate is formed to raise the capital necessary to build Parsons’s turbine-powered vessel Turbinia. At the SpitheadFleet Review in 1897 she speeds among the ships of the world’s navies at 34.5 knots. In 1905 the Royal Navy decides to adopt turbines for its future warships. This example is followed by navies worldwide, from the United States to Japan. Builders of mercantile vessels follow quickly and the turbines of the Cunard liner RMS Mauretania (1906), each developing 26,000 kW, are the largest in existence at the time. The Mauretania holds the Blue Riband for the speediest Atlantic crossing until 1929, a fact that keeps Parsons’s name before the public.
The firm of C. A. Parsons (1889), which builds turbines for use on land, is privately owned, but the Parsons Marine Steam Turbine Company (1897) is a public company. Parsons also earns income from over 300 patents through the Parsons Foreign Patents Co. (1899). He readily licenses others to use his patents but he avoides costly litigation, the ruin of many inventors.
Parsons inherits an interest in optical instruments from his father. In 1890 he develops a cost-effective method for manufacturing searchlight mirrors, using sheets of plate glass and an iron mold heated in a gas furnace. During World War I he supplies most of the national requirements. In 1921 he acquires the optical instrument manufacturers Ross Ltd. and the Derby Crown Glass Company, makers of optical quality glass. In 1925 the firm of Howard Grubb, which makes large optical telescopes, is rescued from insolvency by Parsons. He believes that it is of national importance to maintain the industrial capacity to make optical equipment. Not all of his projects are commercially profitable, as for example his acoustic amplifier, dubbed the “Auxetophone,” or his attempts at synthesising diamonds, which absorbs much time and effort. In the development of his many inventions, he displays great tenacity in the face of reverses and always employs a meticulously scientific approach.
The supply of power on a large scale is revolutionised by the steam turbine. During the twenty years following the building of his first turbogenerator, Parsons remains at the forefront of promoting, building, and selling ever larger and more efficient turbines. He is not only a scientific engineer and inventor, but also a successful manufacturer and businessman. Modest and retiring in manner, his chief weakness lay in a lack of skill in managing interpersonal relationships, though this is compensated to a large extent by his integrity and loyalty. He seeks out the ablest men to run his businesses, among them several Fellows of the Royal Society (FRS). He is elected FRS himself in 1898 and is knighted in 1911. In 1927 he becomes the first engineer to be awarded the Order of Merit for his outstanding contributions to society. He is honoured by many universities and institutions in Europe and the United States.
Parsons marries Katharine Bethell, a Yorkshire woman, in 1883. They have one daughter and a son who dies on active service in 1918. He keeps a residence in London and in Northumbria.
Parsons dies on February 11, 1931, on board the steamship Duchess of Richmond while on a cruise with his wife. The cause of death is given as neuritis. A memorial service is held at Westminster Abbey on March 3, 1931. He is buried in the parish church of St. Bartholomew’s in Kirkwhelpington in Northumberland. His estate is valued at £1,214,355 gross.
Spring Rice is educated at Trinity College, Cambridge, and later studies law at Lincoln’s Inn, but is not called to the Bar. His family is politically well-connected, both in Ireland and Great Britain, and he is encouraged to stand for Parliament by his father-in-law, Lord Limerick.
Spring Rice first stands for election in Limerick City in 1818 but is defeated by the Tory incumbent, John Vereker, by 300 votes. He wins the seat in 1820 and enters the House of Commons. He positions himself as a moderate unionist reformer who opposes the radical nationalist politics of Daniel O’Connell, and becomes known for his expertise on Irish and economic affairs. In 1824 he leads the committee which establishes the Ordnance Survey in Ireland.
Spring Rice’s fluent debating style in the Commons brings him to the attention of leading Whigs and he comes under the patronage of the Marquess of Lansdowne. As a result, he is made Under-Secretary of State for the Home Department under George Canning and Lord Goderich in 1827, with responsibility for Irish affairs. This requires him to accept deferral of Catholic emancipation, a policy which he strongly supports. He then serves as joint Secretary to the Treasury from 1830 to 1834 under Lord Grey. Following the Reform Act 1832, he is elected to represent Cambridge from 1832 to 1839. In June 1834, Grey appoints him Secretary of State for War and the Colonies, with a seat in the cabinet, a post he retains when Lord Melbourne becomes Prime Minister in July. A strong and vocal unionist throughout his life, he leads the Parliamentary opposition to Daniel O’Connell’s 1834 attempt to repeal the Acts of Union 1800. In a six-hour speech in the House of Commons on April 23, 1834, he suggests that Ireland should be renamed “West Britain.” In the Commons, he also champions causes such as the worldwide abolition of slavery and the introduction of state-supported education.
The Whig government falls in November 1834, after which Spring Rice attempts to be elected Speaker of the House of Commons in early 1835. When the Whigs return to power under Melbourne in April 1835, he is made Chancellor of the Exchequer. As Chancellor, he has to deal with crop failures, a depression and rebellion in North America, all of which create large deficits and put considerable strain on the government. His Church Rate Bill of 1837 is quickly abandoned and his attempt to revise the charter of the Bank of Ireland ends in humiliation. Unhappy as Chancellor, he again tries to be elected as Speaker, but fails. He is a dogmatic figure, described by Lord Melbourne as “too much given to details and possessed of no broad views.” Upon his departure from office in 1839, he has become a scapegoat for the government’s many problems. That same year he is raised to the peerage as Baron Monteagle of Brandon, in the County of Kerry, a title intended earlier for his ancestor Sir Stephen Rice. He is also Comptroller General of the Exchequer from 1835 to 1865, despite Lord Howick‘s initial opposition to the maintenance of the office. He differs from the government regarding the exchequer control over the treasury, and the abolition of the old exchequer is already determined upon when he dies.
From 1839 Spring Rice largely retires from public life, although he occasionally speaks in the House of Lords on matters generally relating to government finance and Ireland. He vehemently opposes John Russell, 1st Earl Russell‘s policy regarding the Irish famine, giving a speech in the Lords in which he says the government had “degraded our people, and you, English, now shrink from your responsibilities.”
Spring Rice is well regarded in Limerick, where he is seen as a compassionate landlord and a good politician. An advocate of traditional Whiggism, he strongly believes in ensuring society is protected from conflict between the upper and lower classes. Although a pious Anglican, his support for Catholic emancipation wins him the favour of many Irishmen, most of whom are Roman Catholic. He leads the campaign for better county government in Ireland at a time when many Irish nationalists are indifferent to the cause. During the Great Famine of the 1840s, he responds to the plight of his tenants with benevolence. The ameliorative measures he implements on his estates almost bankrupts the family and only the dowry from his second marriage saves his financial situation. A monument in honour of him still stands in the People’s Park in Limerick.
Even so, Spring Rice’s reputation in Ireland is not entirely favourable. In a book regarding assisted emigration from Ireland, a process in which a landlord pays for their tenants’ passage to the United States or Australia, Moran suggests that Spring Rice was engaged in the practice. In 1838, he is recorded as having “helped” a boat load of his tenants depart for North America, thereby allowing himself the use of their land. However, he is also recorded as being in support of state-assisted emigration across the British Isles, suggesting that his motivation is not necessarily selfish.
In 1802 Corry is dismissed from the Exchequer and replaced by John Foster (later Lord Oriel), he is awarded, however, £2,000 p.a. in compensation. In 1806 the changes in ownership of the Newry estates alters his position. The lands pass to a senior line of the Needham family and they support General Francis Needham, 1st Earl of Kilmorey, at the general election. Corry does not have the funds needed, in excess of £5000, to purchase a seat elsewhere. However, Lady Downshire is inclined to support the Grenville ministry and comes to a formal agreement with Corry to give him £1000 towards his expenses should he be successful in Newry, and, if not, to bring him in for another borough. He fails against the Needham interest in Newry, but a seat at Newport, Isle of Wight, is purchased for him, with £4000 from Lady Downshire, and he is appointed to the Board of Trade. Six months later Grenville’s ministry has fallen and there is another general election. Corry stands, again unsuccessfully, for Newry.
Corry is unmarried but has a long-term relationship with Jane Symms. They have three sons and three daughters. His daughter Ann marries Lt. Col. Henry Westenra, the brother of Robert Cuninghame, 1st Baron Rossmore. His residence in Newry is the Abbey Yard, now a school, and Derrymore House, Bessbrook, County Armagh, which he had inherited from his father and sold in 1810. It is now the property of the National Trust. During his life, a road is constructed from near the main entrance of Derrymore House around Newry and links up with the Dublin Road on the southern side of the town primarily for his use. This road subsequently becomes known as “The Chancellor’s Road,” as a result of his term as the Irish Chancellor of the Exchequer. A local legend has it that the road is constructed after an incident in which Corry’s stagecoach is stoned while passing through Newry by people angry at an unpopular window tax he had introduced. The road has retained this name but it is cut in half by the Newry by-pass in the mid-1990s, however, as a result of works associated with the new A1 dual carriageway, the two-halves of the road are now reconnected.
Orr is the eldest son of Fletcher Blakely Orr of Ballystockart, a unitarian farmer and millowner, and Elizabeth Orr, daughter of David Lowry, farmer, of Ballymacashin, County Down. He attends a local national school, spends two years at an intermediate school in Newtownards, and then attends Methodist College Belfast (MCB). He wins a Royal University of Ireland (RIU) scholarship in mathematics in 1883 and graduates in 1885 from Queen’s College Belfast, a constituent college of the RUI. He then matriculates at St. John’s College, Cambridge, where he is Senior Wrangler in 1888 and comes in first in part two of the Mathematical Tripos in 1889. Two years later he is elected into a fellowship at St. John’s, and the same year is appointed professor of applied mathematics at the Royal College of Science for Ireland in Dublin. When the Royal College is merged with University College Dublin (UCD) in October 1926, he becomes professor of pure and applied mathematics, a position he holds until his retirement in 1933.
Orr’s 1909 publication Notes on Thermodynamics for Students is seen as epitomising his style of teaching, with its emphasis on logical rigour and clear statement of underlying assumptions. Known for his generosity to staff and students who encounter difficulties, he is nonetheless a strict disciplinarian who abhors idleness and valued stoicism. He is elected Fellow of the Royal Society (FRS) in 1909 and is awarded an honorary degree of D.Sc. from Queen’s University Belfast (QUB) in 1919.
In 1892, Orr marries Elizabeth Campbell of Melbourne, Australia, whose father, Samuel Campbell, is from County Down. They live at 19 Pembroke Road, Dublin, and have three daughters. He dies at Douglas, Isle of Man on August 14, 1934, and is interred in Mount Jerome Cemetery, Dublin. He is survived by his two daughters.
(From: “Orr, William McFadden” contributed by Paul Rouse, Dictionary of Irish Biography, http://www.dib.ie)
Parsons also performs some preliminary work in association with the practices of the electrodeposition of copper sulfate upon silver films circa 1865 while in search of the design for a truly flat mirror to use in a telescope. However, he finds it impossible to properly electroplate copper upon these silver films, as the copper contracts and detaches from the underlying glass substrate. His note has been cited as one of the earliest confirmations in literature that thin films on glass substrates experience residual stresses. He revives discussion in his work Nature’s August 1908 edition after witnessing similar techniques used to present newly-devised searchlights before the Royal Society.
Although overshadowed by his father (when astronomers speak of “Lord Rosse”, it is almost always the father that they refer to), Parsons nonetheless pursues some astronomical observations of his own, particularly of the Moon. Most notably, he discovers NGC 2, a spiral galaxy in the constellationPegasus.
Professor of Moral Philosophy at Trinity College Dublin and vicar of St. Anne’s, Dawson Street, at the time of his son’s birth, William FitzGerald is consecrated Bishop of Cork, Cloyne and Ross in 1857 and translates to Killaloe and Clonfert in 1862. George returns to Dublin and enters TCD as a student at the age of sixteen, winning a scholarship in 1870 and graduating in 1871 in Mathematics and Experimental Science. He becomes a Fellow of Trinity in 1877 and spends the rest of his career there, serving as Erasmus Smith’s Professor of Natural and Experimental Philosophy from 1881 to 1901.
In 1883, following from Maxwell’s equations, FitzGerald is the first to suggest a device for producing rapidly oscillating electric currents to generate electromagnetic waves, a phenomenon which is first shown to exist experimentally by the German physicist Heinrich Hertz in 1888.
FitzGerald is better known for his conjecture in his short letter to the editor of Science. “The Ether and the Earth’s Atmosphere” explains that if all moving objects were foreshortened in the direction of their motion, it would account for the curious null-results of the Michelson–Morley experiment. He bases this idea in part on the way electromagnetic forces are known to be affected by motion. In particular, he uses some equations that had been derived a short time before by his friend the electrical engineer Oliver Heaviside. The Dutch physicist Hendrik Lorentz hits on a very similar idea in 1892 and develops it more fully into Lorentz transformations, in connection with his theory of electrons.
The Lorentz–FitzGerald contraction hypothesis becomes an essential part of the Special Theory of Relativity, as Albert Einstein publishes it in 1905. He demonstrates the kinematic nature of this effect, by deriving it from the principle of relativity and the constancy of the speed of light.
FitzGerald suffers from many digestive problems for much of his shortened life. He becomes very ill with stomach problems. He dies on February 22, 1901 at his home, 7 Ely Place in Dublin, the day after an operation on a perforated ulcer. He is buried in Mount Jerome Cemetery.
A crater on the far side of the Moon is named after FitzGerald, as is a building at Trinity College Dublin.
Wilson becomes interested in astronomy and travels to Oran in 1870 to photograph the solar eclipse. In 1871 he acquires a reflecting telescope of 12 inches (30.5 cm) aperture and sets it up in a dome in the gardens of Daramona House. He uses it to experiment on the photography of the moon with wet plates and also begins to study solar radiation using thermopiles. In 1881, he replaces the original telescope with a Grubb reflector of 24 inches (61 cm) aperture and a new dome and mounting that has an electrically controlled clock drive. The new telescope is mounted in a two-story tower attached to the house with an attached physical laboratory, darkroom and machine shop.
Wilson’s main research effort, in partnership with P.L. Gray, is to determine the temperature of the sun using a “differential radio-micrometer” of the sort developed by C.V. Boys in 1889, which combines a bolometer and galvanometer into one instrument. The result of their measurements is an effective temperature of about 8000 °C for the sun which, after correction to deal with absorption in the earth’s atmosphere, give a value of 6590 °C, compared to the modern value of 6075 °C.
Some of Wilson’s other astronomical projects include observations on the transit of Venus, determination of stellar motion, observations of sunspots and a trip to Spain to photograph a solar eclipse. He takes a great many excellent photographs of celestial bodies such as nebulae. His astronomical findings are published in a series of memoirs such as Experimental Observations on the Effective Temperature of the Sun.
Wilson dies on March 6, 1908 at Daramona at the relatively young age of 56, and is buried in the family plot in Steete churchyard. He had married Caroline Ada in 1886, the daughter of Capt. R.C. Granville, and they have a son and two daughters. His son donates his telescope to the University of London, where it is used for research and teaching, finally becoming a feature in Liverpool museum.
Sir Joseph LarmorFRSFRSE, Irish and British physicist and mathematician who makes breakthroughs in the understanding of electricity, dynamics, thermodynamics, and the electron theory of matter, is born in Magheragall, County Antrim on July 11, 1857. His most influential work is Aether and Matter, a theoretical physics book published in 1900.
In 1903 Larmor is appointed Lucasian Professor of Mathematics at Cambridge, a post he retains until his retirement in 1932. He never marries. He is knighted by King Edward VII in 1909.
seamus dubhghaill 