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Birth of William Thompson, Naturalist

William Thompson, Irish naturalist celebrated for his founding studies of the natural history of Ireland, especially in ornithology and marine biology, is born on December 2, 1805, in the booming maritime city of Belfast.

Thompson is the eldest son of William Thompson, a prosperous linen merchant, and Elizabeth Thompson (née Callwell). He has at least two older sisters and several younger brothers. His mother’s father is Robert Callwell, a printer, book-collector, partner in the Commercial Bank, Belfast, and one of the owners of the Northern Star newspaper.

After attending the Royal Belfast Academical Institution (RBAI) from 1818, Thompson is apprenticed in the linen business of William Sinclair in 1821. When his apprenticeship ends, he goes with his cousin George Langtry, later a wealthy shipowner, on a four-month tour (May–September 1826) of the Low Countries, the Rhine, Switzerland, and Italy. On his return to Belfast, he sets up his own business in linen bleaching. Despite early success, losses are incurred. As family and economic circumstances change, he increasingly concentrates on his natural history studies. By 1831 he has given up business. A self-taught naturalist, related by ties of kinship or friendship to most of the liberal and cultivated families of the “northern Athens,” he is shy and fastidious, but is persuaded in 1826 to join the Belfast Natural History Society by its founder, his friend James Lawson Drummond. He reads his first scientific paper, The Birds of the Copeland Islands, to the society on August 13, 1827. In that year he becomes a member of the Belfast Natural History Society’s council, and in 1833 he is chosen as one of the society’s vice-presidents. He is president from 1843 until his death.

Thompson becomes the most important naturalist in mid nineteenth-century Ireland. From 1827 to 1852 he contributes almost eighty papers on Irish natural history to the Magazine of Zoology and Botany and the Proceedings of the Zoological Society of London. From 1836 to 1851 he contributes to The Magazine of Natural History. Invited to travel to the Levant and the Aegean Sea in April–July 1841 with Edward Forbes, professor of natural history at the University of Edinburgh, on HMS Beacon, he observes twenty-three species of birds on migratory flights and publishes “Notice of migratory birds” in The Annals of Natural History. His authoritative observations add considerably to knowledge of the still-to-be-ascertained details of migratory patterns. Indeed, some people refuse to believe, even at that date, that birds do migrate. He publishes other papers in the same journal during 1841–43. At a meeting of the British Association for the Advancement of Science in Glasgow in 1840 his Report on the fauna of Ireland (Vertebrata) attracts favourable notice. He presents and publishes a second and final part enumerating the invertebrates at the Cork meeting of the British Association in August 1843. The two reports form the most complete catalogue of Irish fauna yet published. Thanks to an assiduous correspondence with a network of informants, as well as his own extensive observations, he adds perhaps more than 800 species to Irish fauna lists.

Thompson’s chief work, The Natural History of Ireland, becomes the standard text in Irish zoology in the nineteenth century. The first three volumes, published between 1849 and 1851, deal with birds, particularly their habits and habitats rather than physical descriptions. He is one of the first naturalists to note the effects of industrialisation and other human activities on birdlife. He leaves instructions for his manuscripts on the remaining vertebrates and all the invertebrates to be prepared for publication by Robert Patterson and James Ramsey Garrett. Robert Ball and George Dickie also assist. His notes, though detailed and comprehensive, all require checking, and are found on tiny scraps of paper, even scribbled on the flaps of old envelopes. James Thompson of Macedon, Belfast, painstakingly gums them all into blank notebooks to facilitate the work of his brother’s literary executors, who preface the posthumous publication in 1856 with a lengthy memoir of their friend.

From about 1820 to 1852 Thompson lives with his mother at 1 Donegall Square West, Belfast, commuting from Holywood House, Holywood, County Down, during the summer. His daily routine begins with research, correspondence, or writing for publications for four hours after breakfast. After a two- or three-hour exercise period and dinner, he returns to work for a further two to three hours. He is president of the Belfast Literary Society (1837–39) and also an enthusiastic patron of the visual arts in the city. He enjoys hunting, wildfowling, shooting in Scotland, and gardening, though his health deteriorates from the 1840s.

Early in 1852 Thompson travels to London to make arrangements for that year’s Belfast meeting of the British Association. On February 15 he becomes ill, having suffered a minor stroke. He dies, unmarried, at his Jermyn Street lodgings on the day he is due to return home, February 17, 1852. He is buried in Clifton Street Cemetery, Belfast. He bequeaths his collection to the Belfast Natural History Society, and in March 1852 the Society adds a memorial Thompson Room to its museum, paid for by subscription.

Thompson is a corresponding member of natural history societies in Boston and Philadelphia and has many friends. He is known to assist many other researchers in Ireland, Britain, and the Continent. One of those who thinks highly of his work is Charles Darwin, with whom he corresponds. He also helps many local people, including the poet Francis Davis, with money and practical assistance. He is much loved, and his friends are deeply saddened by his death. His niece, Sydney Mary Thompson, later known by her married surname, Christen, who is born in Belfast, is an amateur naturalist, geologist, and artist, one of the first women to achieve distinction in geology.

(From: “Thompson, William” by Andrew O’Brien and Linde Lunney, Dictionary of Irish Biography, http://www.dib.ie, October 2009)


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Death of Physicist George Johnstone Stoney

George Johnstone Stoney FRS, Irish physicist, dies on July 5, 1911, at Notting Hill, London, England. He is most famous for introducing the term “electron” as the “fundamental unit quantity of electricity.” He introduces the concept, though not the word, as early as 1874, initially naming it “electrine,” and the word itself comes in 1891. He publishes around 75 scientific papers during his lifetime.

Stoney is born on February 15, 1826, at Oakley Park, near Birr, County Offaly, in the Irish Midlands, the son of George Stoney and Anne (née Bindon Blood). His only brother is Bindon Blood Stoney, who becomes chief engineer of the Dublin Port and Docks Board. The Stoney family is an old-established Anglo-Irish family. During the time of the famine (1845–52), when land prices plummet, the family property is sold to support his widowed mother and family. He attends Trinity College Dublin (TCD), graduating with a BA degree in 1848. From 1848 to 1852 he works as an astronomy assistant to William Parsons, 3rd Earl of Rosse, at Birr Castle, County Offaly, where Parsons had built the world’s largest telescope, the 72-inch Leviathan of Parsonstown. Simultaneously he continues to study physics and mathematics and is awarded an MA by TCD in 1852.

From 1852 to 1857, Stoney is professor of physics at Queen’s College Galway. From 1857 to 1882, he is employed as Secretary of the Queen’s University of Ireland, an administrative job based in Dublin. In the early 1880s, he moves to the post of superintendent of Civil Service Examinations in Ireland, a post he holds until his retirement in 1893. He continues his independent scientific research throughout his decades of non-scientific employment duties in Dublin. He also serves for decades as honorary secretary and then vice-president of the Royal Dublin Society (RDS), a scientific society modeled after the Royal Society of London and, after his move to London in 1893, he serves on the council of that society as well. Additionally, he intermittently serves on scientific review committees of the British Association for the Advancement of Science from the early 1860s.

Stoney publishes seventy-five scientific papers in a variety of journals, but chiefly in the journals of the Royal Dublin Society. He makes significant contributions to cosmic physics and to the theory of gases. He estimates the number of molecules in a cubic millimeter of gas, at room temperature and pressure, from data obtained from the kinetic theory of gases. His most important scientific work is the conception and calculation of the magnitude of the “atom of electricity.” In 1891, he proposes the term “electron” to describe the fundamental unit of electrical charge, and his contributions to research in this area lays the foundations for the eventual discovery of the particle by J. J. Thomson in 1897.

Stoney’s scientific work is carried out in his spare time. A heliostat he designed is in the Science Museum Group collection. He is elected a Fellow of the Royal Society in June 1861.

Stoney proposes the first system of natural units in 1881. He realizes that a fixed amount of charge is transferred per chemical bond affected during electrolysis, the elementary charge e, which can serve as a unit of charge, and that combined with other known universal constants, namely the speed of light c and the Newtonian constant of gravitation G, a complete system of units can be derived. He shows how to derive units of mass, length, time and electric charge as base units. Due to the form in which Coulomb’s law is expressed, the constant 4πε0 is implicitly included, ε0 being the vacuum permittivity.

Like Stoney, Max Planck independently derives a system of natural units (of similar scale) some decades after him, using different constants of nature.

Hermann Weyl makes a notable attempt to construct a unified theory by associating a gravitational unit of charge with the Stoney length. Weyl’s theory leads to significant mathematical innovations, but his theory is generally thought to lack physical significance.

Stoney marries his cousin, Margaret Sophia Stoney, by whom he has had two sons and three daughters. One of his sons, George Gerald Stoney FRS, is a scientist. His daughter Florence Stoney OBE is a radiologist while his daughter Edith is considered to be the first woman medical physicist. His most scientifically notable relative is his nephew, the Dublin-based physicist George Francis FitzGerald. He is second cousin of the grandfather of Ethel Sara Turing, mother of Alan Turing.

After moving to London, Stoney lives first at Hornsey Rise, north London, before moving to 30 Chepstow Crescent, Notting Hill, west London. In his later years illness confines him to a single floor of the house, which is filled with books, papers, and scientific instruments, often self-made. He dies at his home on July 5, 1911. His cremated ashes are buried in St. Nahi’s Church, Dundrum, Dublin.

Stoney receives an honorary Doctor of Science (D.Sc.) from the University of Dublin in June 1902. Also in 1902, he is elected as a member to the American Philosophical Society. The street that he lived on in Dundrum is later renamed Stoney Road in his memory.

Craters on Mars and the Moon are named in his honour.


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Birth of Robert Mallet, the Father of Seismology

Robert Mallet, geophysicist, civil engineer, and inventor who distinguishes himself in research on earthquakes and is sometimes called the Father of Seismology, is born in Dublin on June 3, 1810.

Mallet is the son of factory owner John Mallet. He is educated at Trinity College, Dublin, entering it at the age of 16 and graduating in science and mathematics in 1830 at the age of 20.

Following his graduation, Mallet joins his father’s iron foundry business and helps build the firm into one of the most important engineering works in Ireland, supplying ironwork for railway companies, the Fastnet Rock lighthouse, and a swing bridge over the River Shannon at Athlone. He also helps manufacture the characteristic iron railings that surround Trinity College, and which bear his family name at the base.

Mallet is elected to the Royal Irish Academy in 1832 at the early age of 22. He also enrolls in the British Association for the Advancement of Science in 1835 which helps finance much of his research in seismology.

In 1838 Mallet becomes a life member of the Royal Geological Society of Ireland and serves as its President from 1846–1848. From 1848–1849 he constructs the Fastnet Rock lighthouse, southwest of Cape Clear.

On February 9, 1846, Mallet presents to the Royal Irish Academy his paper On the Dynamics of Earthquakes, which is considered to be one of the foundations of modern seismology. He is also credited with coining the word “seismology” and other related words which he uses in his research. He also coins the term epicentre.

From 1852 to 1858, Mallet is engaged in the preparation of his work, The Earthquake Catalogue of the British Association (1858) and carries out blasting experiments to determine the speed of seismic propagation in sand and solid rock.

On December 16, 1857, the area around Padula, Italy is devastated by the Great Neapolitan earthquake which causes 11,000 deaths. At the time it is the third largest known earthquake in the world and has been estimated to have been of magnitude 6.9 on the Richter Scale. Mallet, with letters of support from Charles Lyell and Charles Darwin, petitions the Royal Society of London and receives a grant of £150 to go to Padula and record at first hand the devastation. The resulting report is presented to the Royal Society as the Report on the Great Neapolitan Earthquake of 1857. It is a major scientific work and makes great use of the then new research tool of photography to record the devastation caused by the earthquake. In 1862, he publishes the Great Neapolitan Earthquake of 1857: The First Principles of Observational Seismology in two volumes. He brings forward evidence to show that the depth below the Earth’s surface, from where the impulse of the Neapolitan earthquake originated, is about 8–9 geographical miles.

One of Mallet’s papers is Volcanic Energy: An Attempt to develop its True Origin and Cosmical Relations, in which he seeks to show that volcanic heat may be attributed to the effects of crushing, contortion, and other disturbances in the crust of the earth. The disturbances leading to the formation of lines of fracture, more or less vertical, down which water would find its way, and if the temperature generated be sufficient volcanic eruptions of steam or lava would follow.

Mallet is elected Fellow of the Royal Society in 1854, and in 1861 moves to London, where he becomes a consulting engineer and edits The Practical Mechanic’s Journal. He is awarded the Telford Medal by the Institution of Civil Engineers in 1859, followed by the Cunningham Medal of the Royal Irish Academy for his research into the theory of earthquakes in 1862, and the Wollaston Medal of the Geological Society of London in 1877, the Geological Society’s highest award.

Blind for the last seven years of his life, Robert Mallet dies at Stockwell, London, on November 5, 1881, and is buried at West Norwood Cemetery.


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Birth of Sir Ernest Shackleton, Antarctic Explorer

Sir Ernest Henry Shackleton, Anglo-Irish Antarctic explorer who leads three British expeditions to the Antarctic, is born on February 15, 1874, in Kilkea, County Kildare. He is one of the principal figures of the period known as the Heroic Age of Antarctic Exploration.

Shackleton is the second of ten children and the first of two sons. His father, Henry Shackleton, tries to enter the British Army, but his poor health prevents him from doing so. He becomes a farmer instead, settling in Kilkea. Shackleton’s mother, Henrietta Letitia Sophia Gavan, is descended from the Fitzmaurice family. His brother Frank achieves notoriety as a suspect, later exonerated, in the 1907 theft of the so-called Irish Crown Jewels, which have never been recovered.

The Shackleton family moves to Sydenham, London when he is ten. His first experience of the polar regions is as third officer on Captain Robert Falcon Scott‘s Discovery Expedition of 1901–04, from which he is sent home early on health grounds, after he and his companions Scott and Edward Adrian Wilson set a new southern record by marching to latitude 82°S. During the Nimrod Expedition of 1907–09, he and three companions establish a new record Farthest South latitude at 88°S, only 97 geographical miles from the South Pole, the largest advance to the pole in exploration history. Also, members of his team climb Mount Erebus, the most active Antarctic volcano. For these achievements, he is knighted by King Edward VII on his return home.

After the race to the South Pole ends in December 1911, with Roald Amundsen‘s conquest, Shackleton turns his attention to the crossing of Antarctica from sea to sea, via the pole. To this end, he makes preparations for what becomes the Imperial Trans-Antarctic Expedition, 1914–17. Disaster strikes this expedition when its ship, Endurance, becomes trapped in pack ice and is slowly crushed before the shore parties can be landed. The crew escapes by camping on the sea ice until it disintegrates, then by launching the lifeboats to reach Elephant Island and ultimately South Georgia island, a stormy ocean voyage of 720 nautical miles and Shackleton’s most famous exploit.

In 1921, Shackleton returns to the Antarctic with the Shackleton–Rowett Expedition on a 125-ton Norwegian sealer, named Foca I, which he renames Quest. When the party arrives in Rio de Janeiro, he suffers a suspected heart attack. He refuses a proper medical examination, so Quest continues south, and on January 4, 1922, arrives at South Georgia. In the early hours of the next morning, Shackleton summons the expedition’s physician, Alexander Macklin, to his cabin, complaining of back pains and other discomfort. According to Macklin’s own account, he tells Shackleton he has been overdoing things and should try to “lead a more regular life,” to which Shackleton answers, “You are always wanting me to give up things, what is it I ought to give up?” “Chiefly alcohol, Boss,” replies Macklin. A few moments later, at 2:50 AM on January 5, 1922, he suffers a fatal heart attack. At his wife’s request, he is buried there.

Away from his expeditions, Shackleton’s life is generally restless and unfulfilled. In his search for rapid pathways to wealth and security, he launches business ventures which fail to prosper, and he dies heavily in debt. Upon his death, he is lauded in the press but is thereafter largely forgotten, while the heroic reputation of his rival Scott is sustained for many decades. Later in the 20th century, Shackleton is “rediscovered”. He rapidly becomes a role model for leadership as one who, in extreme circumstances, kept his team together in a survival story described by cultural historian Stephanie Barczewski as “incredible.”

In his 1956 address to the British Science Association, Sir Raymond Priestley, one of his contemporaries, says “Scott for scientific method, Amundsen for speed and efficiency but when disaster strikes and all hope is gone, get down on your knees and pray for Shackleton,” paraphrasing what Apsley Cherry-Garrard had written in a preface to his 1922 memoir The Worst Journey in the World. In 2002, Shackleton is voted eleventh in a BBC poll of the 100 Greatest Britons.


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Birth of Astronomer William Parsons, 3rd Earl of Rosse

William Parsons, 3rd Earl of Rosse, Anglo-Irish astronomer, naturalist, and engineer, is born in York, England on June 17, 1800. He is President of the Royal Society (UK), the most important association of naturalists in the world in the nineteenth century. He builds several giant telescopes. His 72-inch telescope, built in 1845 and colloquially known as the “Leviathan of Parsonstown,” is the world’s largest telescope, in terms of aperture size, until the early 20th century. From April 1807 until February 1841, he is styled as Baron Oxmantown.

Parsons is the son of Lawrence Parsons, 2nd Earl of Rosse, and Alice Lloyd. He is educated at Trinity College, Dublin and Magdalen College, Oxford, graduating with first-class honours in mathematics in 1822. He inherits an earldom and a large estate in King’s County (now County Offaly) in Ireland when his father dies in February 1841.

Parsons marries Mary Field, daughter of John Wilmer Field, on April 14, 1836. They have thirteen children, of which four sons survive to adulthood: Lawrence, 4th Earl of Rosse, Rev. Randal Parsons, the Hon. Richard Clere Parsons, and the Hon. Sir Charles Algernon Parsons.

In addition to his astronomical interests, Parsons serves as a Member of Parliament (MP) for King’s County from 1821 to 1834, president of the British Science Association in 1843–1844, an Irish representative peer after 1845, president of the Royal Society (1848–1854), and chancellor of Trinity College, Dublin (1862–1867).

During the 1840s, Parsons has the Leviathan of Parsonstown built, a 72-inch telescope at Birr Castle, Parsonstown, County Offaly. He has to invent many of the techniques he uses for constructing the Leviathan, both because its size is without precedent and because earlier telescope builders had guarded their secrets or had not published their methods. Details of the metal, casting, grinding and polishing of the 3-ton ‘speculum’ are presented in 1844 at the Belfast Natural History Society. His telescope is considered a marvelous technical and architectural achievement, and images of it are circulated widely within the British commonwealth. Building of the Leviathan begins in 1842, and it is first used in 1845, with regular use waiting another two years due to the Great Famine. Using this telescope, he sees and catalogues a large number of nebulae, including a number that would later be recognised as galaxies.

Parsons performs astronomical studies and discovers the spiral nature of some nebulas, today known to be spiral galaxies. His telescope Leviathan is the first to reveal the spiral structure of M51, a galaxy nicknamed later as the “Whirlpool Galaxy,” and his drawings of it closely resemble modern photographs.

Parsons dies at the age of 67 on October 31, 1867, at Monkstown, County Dublin.

Parsons’s son publishes his father’s findings, including the discovery of 226 New General Catalogue of Nebulae and Clusters of Stars (NGC) objects in the publication Observations of Nebulae and Clusters of Stars Made With the Six-foot and Three-foot Reflectors at Birr Castle From the Year 1848 up to the Year 1878, Scientific Transactions of the Royal Dublin Society Vol. II, 1878.


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Birth of Thomas Romney Robinson, Astronomer & Physicist

Reverend John Thomas Romney Robinson, 19th-century astronomer and physicist usually referred to as Thomas Romney Robinson, was born at St. Anne’s in Dublin on April 23, 1792. He is the longtime director of the Armagh Observatory, one of the chief astronomical observatories in the United Kingdom at the time. He is remembered as the inventor in 1846 of the Robinson 4-cup anemometer, a device for measuring the speed of the wind.

Robinson is the son of the English portrait painter Thomas Robinson (d.1810) and his wife, Ruth Buck (d.1826). He is educated at Belfast Academy then studies Divinity at Trinity College Dublin, where he is elected a Scholar in 1808, graduating BA in 1810 and obtaining a fellowship in 1814, at the age of 22. He is for some years a deputy professor of natural philosophy (physics) at Trinity.

In 1823, at the age of 30, Robinson gains the appointment of astronomer at the Armagh Observatory. From this point on he always resides at the Armagh Observatory, engaged in research connected with astronomy and physics, until his death in 1882. Having also been ordained as an Anglican priest while at Trinity, he obtains the church livings of the Anglican Church at Enniskillen and at Carrickmacross in 1824.

During the 1840s and 1850s Robinson is a frequent visitor to the world’s most powerful telescope of that era, the so-called Leviathan of Parsonstown telescope, which had been built by Robinson’s friend and colleague William Parsons, 3rd Earl of Rosse. He is active with Parsons in interpreting the higher-resolution views of the night sky produced by Parsons’ telescope, particularly with regard to the galaxies and nebulae and he publishes leading-edge research reports on the question.

Back at his own observatory in Armagh, Robinson compiles a large catalogue of stars and writes many related reports. In 1862 he is awarded a Royal Medal “for the Armagh catalogue of 5345 stars, deduced from observations made at the Armagh Observatory, from the years 1820 up to 1854; for his papers on the construction of astronomical instruments in the memoirs of the Astronomical Society, and his paper on electromagnets in the Transactions of the Royal Irish Academy.”

Robinson is president of the Royal Irish Academy from 1851 to 1856 and is a long-time active organiser in the British Association for the Advancement of Science. He is a friend of Charles Babbage, who says was “indebted” for having reminded him about the first time he came up with the idea of the calculating machine.

Robinson marries twice, first to Eliza Isabelle Rambaut (d.1839) and secondly to Lucy Jane Edgeworth (1806–1897), the lifelong disabled daughter of Richard Lovell Edgeworth. His daughter marries the physicist George Gabriel Stokes. Stokes frequently visits Robinson in Armagh in Robinson’s later years.

Robinson dies in Armagh, County Armagh at the age of 89 on February 28, 1882.

The crater Robinson on the Moon is named in his honour.


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Death of Antarctic Explorer Ernest Shackleton

Sir Ernest Henry Shackleton, Anglo-Irish Antarctic explorer who led three British expeditions to the Antarctic, dies of a heart attack in Grytviken, South Georgia on January 5, 1922. He is one of the principal figures of the period known as the Heroic Age of Antarctic Exploration.

Born in Kilkea, County Kildare, Shackleton and his Anglo-Irish family move to Sydenham, London when he is ten. His first experience of the polar regions is as third officer on Captain Robert Falcon Scott‘s Discovery Expedition of 1901–04, from which he is sent home early on health grounds, after he and his companions Scott and Edward Adrian Wilson set a new southern record by marching to latitude 82°S. During the Nimrod Expedition of 1907–09, he and three companions establish a new record Farthest South latitude at 88°S, only 97 geographical miles from the South Pole, the largest advance to the pole in exploration history. Also, members of his team climb Mount Erebus, the most active Antarctic volcano. For these achievements, he is knighted by King Edward VII on his return home.

After the race to the South Pole ends in December 1911, with Roald Amundsen‘s conquest, Shackleton turns his attention to the crossing of Antarctica from sea to sea, via the pole. To this end, he makes preparations for what becomes the Imperial Trans-Antarctic Expedition, 1914–17. Disaster strikes this expedition when its ship, Endurance, becomes trapped in pack ice and is slowly crushed before the shore parties can be landed. The crew escapes by camping on the sea ice until it disintegrates, then by launching the lifeboats to reach Elephant Island and ultimately South Georgia Island, a stormy ocean voyage of 720 nautical miles and Shackleton’s most famous exploit.

In 1921, Shackleton returns to the Antarctic with the Shackleton–Rowett Expedition on a 125-ton Norwegian sealer, named Foca I, which he renames Quest. When the party arrives in Rio de Janeiro, he suffers a suspected heart attack. He refuses a proper medical examination, so Quest continues south, and on January 4, 1922, arrives at South Georgia. In the early hours of the next morning, Shackleton summons the expedition’s physician, Alexander Macklin, to his cabin, complaining of back pains and other discomfort. According to Macklin’s own account, he tells Shackleton he has been overdoing things and should try to “lead a more regular life,” to which Shackleton answers, “You are always wanting me to give up things, what is it I ought to give up?” “Chiefly alcohol, Boss,” replies Macklin. A few moments later, at 2:50 AM on January 5, 1922, he suffers a fatal heart attack. At his wife’s request, he is buried there.

Away from his expeditions, Shackleton’s life is generally restless and unfulfilled. In his search for rapid pathways to wealth and security, he launches business ventures which fail to prosper, and he dies heavily in debt. Upon his death, he is lauded in the press but is thereafter largely forgotten, while the heroic reputation of his rival Scott is sustained for many decades. Later in the 20th century, Shackleton is “rediscovered”. He rapidly becomes a role model for leadership as one who, in extreme circumstances, kept his team together in a survival story described by cultural historian Stephanie Barczewski as “incredible.”

In his 1956 address to the British Science Association, Sir Raymond Priestley, one of his contemporaries, says “Scott for scientific method, Amundsen for speed and efficiency but when disaster strikes and all hope is gone, get down on your knees and pray for Shackleton,” paraphrasing what Apsley Cherry-Garrard had written in a preface to his 1922 memoir The Worst Journey in the World. In 2002, Shackleton is voted eleventh in a BBC poll of the 100 Greatest Britons.


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Birth of John Tyndall, Experimental Physicist

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John Tyndall, Irish experimental physicist who, during his long residence in England, is an avid promoter of science in the Victorian era, is born on August 2, 1820, in Leighlinbridge, County Carlow.

Tyndall is born into a poor Protestant Irish family. After a thorough basic education, he works as a surveyor in Ireland and England from 1839 to 1847. When his ambitions turn from engineering to science, he spends his savings on gaining a Ph.D. from the University of Marburg in Marburg, Hesse, Germany (1848–1850), but then struggles to find employment.

In 1853 Tyndall is appointed Professor of Natural Philosophy at the Royal Institution, London. There he becomes a friend of the much-admired physicist and chemist Michael Faraday, entertains and instructs fashionable audiences with brilliant lecture demonstrations rivaling the biologist Thomas Henry Huxley in his popular reputation and pursuing his research.

An outstanding experimenter, particularly in atmospheric physics, Tyndall examines the transmission of both radiant heat and light through various gases and vapours. He discovers that water vapor and carbon dioxide absorb much more radiant heat than the gases of the atmosphere and argues the consequent importance of those gases in moderating Earth’s climate, that is, in the natural greenhouse effect. He also studies the diffusion of light by large molecules and dust, known as the Tyndall effect, and he performs experiments demonstrating that the sky’s blue color results from the scattering of the Sun’s rays by molecules in the atmosphere.

Tyndall is passionate and sensitive, quick to feel personal slights and to defend underdogs. Physically tough, he is a daring mountaineer. His greatest fame comes from his activities as an advocate and interpreter of science. In collaboration with his scientific friends in the small, private X Club, he urges greater recognition of both the intellectual authority and practical benefits of science.

Tyndall is accused of materialism and atheism after his presidential address at the 1874 meeting of the British Association for the Advancement of Science, when he claims that cosmological theory belongs to science rather than theology and that matter has the power within itself to produce life. In the ensuing notoriety over this “Belfast Address,” his allusions to the limitations of science and to mysteries beyond human understanding are overlooked. He engages in a number of other controversies such as spontaneous generation, the efficacy of prayer and Home Rule for Ireland.

In his last years Tyndall often takes chloral hydrate to treat his insomnia. When bedridden and ailing, he dies from an accidental overdose of this drug on December 4, 1893, at the age of 73 and was buried at Haslemere, Surrey, England.

Tyndall is commemorated by a memorial, the Tyndalldenkmal, erected at an elevation of 7,680 ft. on the mountain slopes above the village of Belalp, where he had his holiday home, and in sight of the Aletsch Glacier, which he had studied.


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Birth of William McCrea, Astronomer & Mathematician

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Sir William Hunter McCrea, English astronomer and mathematician, is born in Dublin on December 13, 1904.

McCrea’s family moves to Kent in 1906 and then to Derbyshire where he attends Chesterfield Grammar School. His father is a school master at Netherthorpe Grammar School in Staveley. He goes to Trinity College, Cambridge in 1923 where he studies mathematics, later gaining a PhD in 1929 under Ralph H. Fowler.

In 1928, McCrea studies Albrecht Unsöld‘s hypothesis and discovers that three quarters of the sun is made of hydrogen and about one quarter is helium with 1% being other elements. Previous to this many people thought the sun consisted mostly of iron. After this, people realise most stars consist of hydrogen.

From 1930 McCrea lectures in mathematics at the University of Edinburgh. In 1931, during his time in Edinburgh, he is elected a Fellow of the Royal Society of Edinburgh. His proposers are Sir Edmund Taylor Whittaker, Sir Charles Galton Darwin, Edward Copson and Charles Glover Barkla. He wins the Society’s Keith Medal, jointly with Edward Copson, for the period 1939-1941.

In 1932 McCrea moves to Imperial College London as a Reader and marries Marian Core the following year. In 1936 he becomes Professor of Mathematics and head of the mathematics department at the Queen’s University Belfast.

During World War II McCrea is co-opted onto the Admiralty Operational Research Group. After the war, he joins the mathematics department at Royal Holloway College in 1944. He is elected a Fellow of the Royal Society of London in 1952.

McCrea is president of the Royal Astronomical Society from 1961 to 1963 and president of Section A of the British Association for the Advancement of Science from 1965–1966.

In 1964 McCrea proposes mass transfer mechanism as an explanation of blue straggler stars. In 1965, he creates the astronomy centre of the physics department at the University of Sussex.

McCrea wins the Gold Medal of the Royal Astronomical Society in 1976 and is knighted by Queen Elizabeth II in 1985.

William McCrea dies on April 25, 1999, at Lewes in Sussex. The McCrea Building on the Royal Holloway College campus is named after him.


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Birth of Physicist John Joly

John Joly, Irish physicist famous for his development of radiation therapy in the treatment of cancer, is born in Bracknagh, County Offaly, on November 1, 1857. He is also known for developing techniques to accurately estimate the age of a geological period, based on radioactive elements present in minerals.

Joly is a second cousin of Charles Jasper Joly, the astronomer. He enters Trinity College, Dublin in 1876, graduating in Engineering in 1882 in first place with various special certificates in branches of engineering, at the same time obtaining a First-Class Honours in modern literature. He works as a demonstrator in Trinity’s Engineering and Physics departments before succeeding William Johnson Sollas in the Chair of Geology and Mineralogy in 1897, a position which he holds until his death in 1933.

Joly joins the Royal Dublin Society in 1881 while still a student and is a frequent contributor of papers. During his career he writes over 270 books and scientific papers.

On May 17, 1899, Joly reads his paper “An Estimate of the Geological Age of the Earth” to the Royal Dublin Society. In it, he proposes to calculate the age of the earth from the accumulation of sodium in the waters of the oceans. He calculates the rate at which the oceans should have accumulated sodium from erosion processes and determines that the oceans are about 80 to 100 million years old. The paper is quickly published, appearing four months later in the Society’s Scientific Transactions. Although this method is later considered inaccurate and is consequently superseded, it radically modifies the results of other methods in use at the time.

In 1903 he publishes an article in Nature in which he discusses the possibility of using radium to date the Earth and goes on to study the radioactive content of the Earth’s crust to formulate a theory of thermal cycles and examines the radioactive constituents of certain rocks as a means of calculating their age. Working in collaboration with Sir Ernest Rutherford, he uses radioactive decay in minerals to estimate, in 1913, that the beginning of the Devonian period could not be less than 400 million years ago, an estimate which is in line with modern calculations.

Joly serves as President of Section C (Geology) when the British Association for the Advancement of Science meets in Dublin in 1908, during which he presents his paper “Uranium and Geology” in an address to the society. This work describes radioactive materials in rocks and their part in the generation of the Earth’s internal heat.

Along with his friend Henry Horatio Dixon, Joly also puts forward the cohesion-tension theory which is now thought to be the main mechanism for the upward movement of water in plants.

In 1914 Joly develops a method of extracting radium and applies it in the treatment of cancer. As a Governor of Dr. Steevens’ Hospital in Dublin, in collaboration with Walter Stevenson, he devises radiation therapy methods and promotes the establishment by the Royal Dublin Society of the Irish Radium Institute where they pioneer the “Dublin method” of using a hollow needle for deep radiation therapy, a technique that later enters worldwide use. The Radium Institute also supplies capillary tubes containing radon to hospitals for some years for use in the treatment of tumours.

Joly is elected a Fellow of the Royal Society of London in 1892, is awarded the Boyle Medal of the Royal Dublin Society in 1911, the Royal Medal of the Royal Society of London in 1910, and the Murchison Medal of the Geological Society of London in 1923. He is also conferred honorary degrees by the National University of Ireland, the University of Cambridge, and the University of Michigan. After his death in 1933, his friends subscribe the sum of £1,700 to set up a memorial fund which is still used to promote the annual Joly Memorial Lectures at the University of Dublin, which were inaugurated by Sir Ernest Rutherford in 1935. He is also remembered by the Joly Geological Society, a student geological association established in 1960.

In 1973 a crater on Mars is named in Joly’s honour.