Friday, July 5, 2013

Positive Quiddity: Christopher Wren

Sir Christopher Michael Wren FRS (20 October 1632 – 25 February 1723) is one of the most highly acclaimed English architects in history. He was accorded responsibility for rebuilding 52 churches in the City of London after the Great Fire in 1666, including his masterpiece, St. Paul’s Cathedral, on Ludgate Hill, completed in 1710. The principal creative responsibility for a number of the churches is now more commonly attributed to others in his office, especially Nicholas Hawksmoor. Other notable buildings by Wren include the Roytal Naval College in Greenwich and the south front of Hampton Court Palace.

Educated in Latin and Aristotelian physics at the University of Oxford, Wren was a notable astronomer, geometer, and mathematician-physicist, as well as an architect. He was a founder of the Royal Society (president 1680–82), and his scientific work was highly regarded by Sir Isaac Newton and Blaise Pascal.

Early Life and Education
Sir Christopher Wren was born in East Knoyle in Wiltshire, the only surviving son of Christopher Wren Sr. (1589–1658) and Mary Cox, the only child of the Wiltshire squire Robert Cox from Fonthill Bishop. Christopher Sr. was at that time the rector of East Knoyle and later Dean of Windsor. It was while they were living at East Knoyle that all their children were born; Mary, Catherine, and Susan were all born by 1628 but then several children were born who died within a few weeks of their birth. Their son Christopher was born in 1632 then, two years later, another daughter named Elizabeth was born. Mary must have died shortly after the birth of Elizabeth, although there does not appear to be any surviving record of the date.
Through Mary, however, the family became well off financially for, as the only heir, she had inherited her father's estate.

As a child Wren "seem'd consumptive". Although a sickly child, he would survive into robust old age. He was first taught at home by a private tutor and his father. After his father's royal appointment as Dean oif Windsor in March 1635, his family spent part of each year there, but little is known about Wren's life at Windsor. He spent his first eight years at East Knoyle and was educated by the Rev. William Shepherd, a local clergyman.

Oxford and London
Receiving his M.A. in 1653, Wren was elected a fellow of All Souls College in the same year and began an active period of research and experiment in Oxford. His days as a fellow of All Souls ended when Wren was appointed Professor of Astronomy at Gresham College, London in 1657. He was provided with a set of rooms and a stipend and was required to give weekly lectures in both Latin and English to all who wished to attend; admission was free. Wren took up this new work with enthusiasm. He continued to meet the men with whom he had frequent discussions in Oxford. They attended his London lectures and in 1660, initiated formal weekly meetings. It was from these meetings that the Royal Society. England's premier scientific body, was to develop. He undoubtedly played a major role in the early life of what would become the Royal Society; his great breadth of expertise in so many different subjects helping in the exchange of ideas between the various scientists. In fact, the report on one of these meetings reads:
 
Memorandum November 28, 1660. These persons following according to the usual custom of most of them, met together at Gresham College to hear Mr Wren's lecture, viz. The Lord Brouncker, Mr Boyle, Mr Bruce, Sir Robert Moray, Sor Paule Neile, Dr Wilkins, Dr Goddard, Dr Petty, Mr Ball, Mr Rooke, Mr Wren, Mr Hill. And after the lecture was ended they did according to the usual manner, withdraw for mutual converse.

In 1662, they proposed a society "for the promotion of Physico-Mathematicall Experimental Learning." This body received its Royal Charter from Charles II and "The Royal Society of London for Improving Natural Knowledge" was formed. In addition to being a founder member of the Society, Wren was president of the Royal Society from 1680 to 1682.

In 1661, Wren was elected Savilian Professor of Astronomy at Oxford, and in 1669 he was appointed Surveyor of Works to Charles II. From 1661 until 1668 Wren's life was based in Oxford, although his attendance at meetings of the Royal Society meant that he had to make occasional trips to London.

The main sources for Wren's scientific achievements are the records of the Royal Society. His scientific works ranged from astronomy, optics, the problem of finding longitude at sea, cosmology, mechanics, microscopy, surveying, medicine and meteorology. He observed, measured, dissected, built models and employed, invented and improved a variety of instruments. It was also around these times that his attention turned to architecture.

Architecture and Family
It was probably around this time that Wren was drawn into redesigning a battered St. Paul’s Cathedral.
Making a trip to Paris in 1665, Wren studied the architecture, which had reached a climax of creativity, and perused the drawings of Berini, the great Italian sculptor and architect. Returning from Paris, he made his first design for St Paul's. A week later, however, the Great Fire destroyed two-thirds of the city. Wren submitted his plans for rebuilding the city to King Charles II, although they were never adopted. With his appointment as King's Surveyor of Works in 1669, he had a presence in the general process of rebuilding the city, but was not directly involved with the rebuilding of houses or companies' halls. Wren was personally responsible for the rebuilding of 51 churches; however, it is not necessarily true to say that each of them represented his own fully developed design.

Wren was knighted 14 November 1673. This honour was bestowed on him after his resignation from the Savilian chair in Oxford, by which time he had already begun to make his mark as an architect, both in services to the Crown and in playing an important part in rebuilding London after the Great Fire.
Additionally, he was sufficiently active in public affairs to be returned as Member of Parliament for Old Windsor in 1680, 1689 and 1690, but did not take his seat.

By 1669 Wren's career was well established and it may have been his appointment as Surveyor of the King’s Works in early 1669 that persuaded him that he could finally afford to take a wife. In 1669 the 37-year-old Wren married his childhood neighbour, the 33-year-old Faith Coghill, daughter of Sir John Coghill of Bletchingdon. Little is known of Faith's life or demeanour, but a love letter from Wren survives, which reads, in part:
I have sent your Watch at last & envy the felicity of it, that it should be soe near your side & soe often enjoy your Eye. ... .but have a care for it, for I have put such a spell into it; that every Beating of the Balance will tell you 'tis the Pulse of my Heart, which labors as much to serve you and more trewly than the Watch; for the Watch I beleeve will sometimes lie, and sometimes be idle & unwilling ... but as for me you may be confident I shall never ...

This brief marriage produced two children: Gilbert, born October 1672, who suffered from convulsions and died at about 18 months old, and Christopher, born February 1675. The younger Christopher was trained by his father to be an architect. It was this Christopher that supervised the topping out ceremony of St. Paul’s in 1710 and wrote the famous Parentalia, or, Memoirs of the family of the Wrens. Faith Wren died of smallpox on 3 September 1675. She was buried in the chancel of St Marin-in-the-Fields beside the infant Gilbert. A few days later Wren's mother-in-law, Lady Coghill, arrived to take the infant Christopher back with her to Oxfordshire to raise.

In 1677, 17 months after the death of his first wife, Wren married once again. He married Jane Fitzwilliam, daughter of William FitzWilliam, 2nd Baron FitzWilliam and his wife Jane Perry the daughter of a prosperous London merchant.
 
Wren died on February 25, 1723 and was interred in St. Paul’s Cathedral in London.

Christopher Wren as a Scientist
One of Wren's friends, another great scientist and architect and a fellow Westminster Schoolboy, Robert Hooke said of him "Since the time of Archimedes there scarce ever met in one man in so great perfection such a mechanical hand and so philosophical mind."

When a fellow of All Souls, Wren constructed a transparent beehive for scientific observation; he began observing the mooin, which was to lead to the invention of micrometers for the telescope. He experimented on terrestrial magnetism and had taken part in medical experiments while at #Wadham College, performing the first successful injection of a substance into the bloodstream (of a dog).

In Gresham College, he did experiments involving determining longitude through magentic variation and through lunar observation to help with navigation, and helped construct a 35-foot (11 m) telescope with Sir Paul Neile. Wren also studied and improved the microscope and telescope at this time. He had also been making observations of the planet Saturn from around 1652 with the aim of explaining its appearance. His hypothesis was written up in De corpore saturni but before the work was published, Huygens presented his theory of the rings of Saturn. Immediately Wren recognized this as a better hypothesis than his own and De corpore saturni was never published. In addition, he constructed an exquisitely detailed lunar model and presented it to the king. Also his contribution to mathematics should be noted; in 1658, he found the length of an arc of the cycloid using an exhaustion proof based on dissections to reduce the problem to summing segments of chords of a circle which are in geometric progression.

A year into Wren's appointment as a Savilian Professor in Oxford, the Royal Society was created and Wren became an active member. As Savilian Professor, Wren studied mechanics thoroughly, especially elastic collisions and pendulum motions. He also directed his far-ranging intelligence to the study of meteorology: in 1662 he invented the tipping bucket rain gauge and, in 1663, designed a "weather-clock" that would record temperature, humidity, rainfall and barometric pressure. A working weather clock based on Wren's design was completed by Robert Hooke in 1679.


In addition, Wren experimented on muscle functionality, hypothesizing that the swelling and shrinking of muscles might proceed from a fermentative motion arising from the mixture of two heterogeneous fluids.
Although this is incorrect, it was at least founded upon observation and may mark a new outlook on medicine: specialization.

Another topic to which Wren contributed was optics. He published a description of an engine to create
perspective drawings and he discussed the grinding of conical lenses and mirrors. Out of this work came another of Wren's important mathematical results, namely that the hyperboloid of revolution is a ruled surface. These results were published in 1669. In subsequent years, Wren continued with his work with the Royal Society, although after the 1680s his scientific interests seem to have waned: no doubt his architectural and official duties absorbed more time.

It was a problem posed by Wren that serves as an ultimate source to the conception of Newton's Principia Mathematica Philosophiae Naturalis. Robert Hook had theorized that planets, moving in vacuo, describe orbits around the Sun because of a rectilinear inertial motion by the tangent and an accelerated motion towards the Sun. Wren's challenge to Halley and Hooke,for the reward of a book worth thirty shillings, was to provide, within the context of Hooke's hypothesis, a mathematical theory linking the Kepler’s laws with a specific force law. Halley took the problem to Newton for advice, prompting the latter to write a nine-page answer, De motu corporum in gyrum, which was later to be expanded into the Principia.
  http://en.wikipedia.org/wiki/Christopher_Wren

No comments:

Post a Comment