The Robe

A manuscript he sent to John Locke in which he disputed the existence of the Trinity was never published. Henry More's belief in the infinity of the universe and rejection of Cartesian dualism may have influenced Newton's religious ideas. In the 1690s Newton wrote a number of religious tracts dealing with the literal interpretation of the Bible. The end of this friendship led Newton to a nervous breakdown.

He acquired a circle of admirers, including the Swiss-born mathematician Nicolas Fatio de Duillier, with whom he formed an intense relationship that lasted until 1693. With the Principia, Newton became internationally recognised. In the same work he presented the first analytical determination, based on Boyle's Law, of the speed of sound in air. He used the Latin word gravitas (weight) for the force that would become known as gravity, and defined the law of universal gravitation.

In this work Newton stated the three universal laws of motion that were not to be improved upon for more than two hundred years. Philosophiae Naturalis Principia Mathematica (now known as the Principia) was published in 1687 with encouragement and financial help from Edmond Halley. This contained the beginnings of the laws of motion that would inform the Principia. He published his results in De Motu Corporum (1684).

In 1679, Newton returned to his work on mechanics, i.e., gravitation and its effect on the orbits of planets, with reference to Kepler's laws of motion, and consulting with Hooke and Flamsteed on the subject. (See also Isaac Newton's occult studies.). (This was at a time when there was no clear distinction between alchemy and science.) Had he not relied on the occult idea of action at a distance, across a vacuum, he might not have developed his theory of gravity. John Maynard Keynes, who acquired many of Newton's writings on alchemy, stated that "Newton was not the first of the age of reason: he was the last of the magicians." Newton's interest in alchemy cannot be isolated from his contributions to science².

He replaced the ether with occult forces based on Hermetic ideas of attraction and repulsion between particles. Newton was in contact with Henry More, the Cambridge Platonist who was born in Grantham, on alchemy, and now his interest in the subject revived. In his Hypothesis of Light of 1675, Newton posited the existence of the ether to transmit forces between particles. Figure 15 of Part II of Book one of Opticks shows a perfect illustration of how this occurs.

Newton is believed to have been the first to explain precisely, the formation of the rainbow from water droplets dispersed in the atmosphere in a rain shower. Today's quantum mechanics recognises a "wave-particle duality"; however photons bear very little semblance to Newton's corpuscles (e.g., corpuscles refracted by accelerating toward the denser medium). Later physicists instead favoured a wave explanation of light to account for diffraction. Newton argued that light is composed of particles; thus he could not explain the diffraction of light.

Mr Hooke tried casually with glass wedges filled with red and blue Liquors, and was surprised at the unexpected Event, the reason of it being then unknown; which makes me trust the more to his experiment, though I have not tried it myself." Thus Newton was not completely without respect for Hooke. For example in Opticks, Book I Part II, referring to the combining effect of colour filters, Newton refers to Hooke's experiments: " .. Although is it widely known and accepted that there was considerable antagonism between Newton and Robert Hooke, Newton does make the occasional respectful reference to Hooke's work. II, 10)) from "Pigmies placed on the shoulders of giants see more than the giants themselves", Newton was perhaps making a more personal point than the mere expression of modesty — Hooke was a man of short stature.

In changing this quotation of Didacus Stella (Lucan (vol. He once said, in a letter to Hooke dated 5 February 1676:. In one experiment, to prove that colour was caused by pressure on the eye, Newton slid a darning needle around the side of his eye until he could poke at its rear side, dispassionately noting "white, darke & coloured circles" so long as he kept stirring with "y^e bodkin.". The two men remained enemies until Hooke's death.

When Robert Hooke criticised some of Newton's ideas, Newton was so offended that he withdrew from public debate. Their interest encouraged him to publish his notes On Colour, which he later expanded into his Opticks. (Only later, as glasses with a variety of refractive properties became available, did achromatic lenses for refractors become feasible.) In 1671 the Royal Society asked for a demonstration of his reflecting telescope. By grinding his own mirrors, using Newton's rings to judge the quality of the optics for his telescopes, he was able to produce a superior instrument to the refracting telescope, due primarily to the wider diameter of the mirror.

From this work he concluded that any refracting telescope would suffer from the dispersion of light into colours, and invented a reflecting telescope (today, known as a Newtonian telescope) to bypass that problem. For more details, see Newton's theory of colour. Thus the colours we observe are the result of how objects interact with the incident already-coloured light, not the result of objects generating the colour. Newton noted that regardless of whether it was, reflected or scattered or transmitted, it stayed the same colour.

He also showed that the coloured light does not change its properties, by separating out a coloured beam and shining it on various objects. During this period he investigated the refraction of light, demonstrating that a prism could decompose white light into a spectrum of colours, and that a lens and a second prism could recompose the multicoloured spectrum into white light. From 1670 to 1672 he lectured on optics. This prevented the conflict that would have occurred between his religious views and the orthodoxy of the church.

Newton argued that this should exempt him from the normal ordination requirement, and Charles II, whose permission was needed, accepted this argument. However the terms of the Lucasian professorship required that the holder not be active in the church (presumably so as to have more time for science). Any fellow of Cambridge or Oxford had to be ordained at the time. He was elected Lucasian professor of mathematics in 1669.

(Curiously, in Germany the Newtonian notation is more popular.) Though Newton belongs among the brightest scientists of his era, the last 25 years of his life were marred by a bitter dispute with Leibniz, whom he accused of plagiarism. Although Newton had worked out his own method before Leibniz, the latter's notation and "Differential Method" were superior, and were generally adopted throughout the English-speaking world. Newton and Leibniz developed the theory of calculus independently, using different notations. In the same year he circulated his findings in De Analysi per Aequationes Numeri Terminorum Infinitas (On Analysis by Infinite Series), and later in De methodis serierum et fluxionum (On the Methods of Series and Fluxions), whose title gave the name to his "method of fluxions".

Newton became a fellow of Trinity College in 1667. It is now generally considered probable that even this story was invented by Newton in later life, to illustrate how he drew inspiration from everyday events. Why should it not go sideways or upwards, but constantly to the earth's centre." In similar terms, Voltaire wrote in his Essay on Epic Poetry (1727), "Sir Isaac Newton walking in his gardens, had the first thought of his system of gravitation, upon seeing an apple falling from a tree." These accounts are exaggerations of Newton's own tale about sitting by a window in his home (Woolsthorpe Manor) and watching an apple fall from a tree. Why should that apple always descend perpendicularly to the ground, thought he to himself.

It was occasioned by the fall of an apple, as he sat in contemplative mood. A contemporary writer, William Stukeley, recorded in his Memoirs of Sir Isaac Newton's Life a conversation with Newton in Kensington on 15 April 1726, in which Newton recalled "when formerly, the notion of gravitation came into his mind. The popular tradition has it that Newton was sitting under an apple tree when an apple fell on his head, and that this made him understand that earthly and celestial gravitation are the same. For the next two years Newton worked at home on calculus, optics and gravitation.

Soon after Newton had obtained his degree in 1665, the University closed down as a precaution against the Great Plague. In 1665 he discovered the binomial theorem and began to develop a mathematical theory that would later become calculus. At that time the college's teachings were based on those of Aristotle, but Newton preferred to read the more advanced ideas of modern philosophers such as Descartes, Galileo, Copernicus and Kepler. In 1661 he joined Trinity College, Cambridge, where his uncle William Ayscough had studied.

His teacher said:. This he did at the age of 18, achieving an admirable final report. However he was thoroughly unhappy with the work and eventually with the help of his uncle and of his schoolteacher, he managed to persuade his mother to send him back to school so that he might complete his schooling. His family then removed him from school and attempted to make a farmer of him.

From the age of 12 until he was 17, Newton was educated at Grantham Grammar School. Eves:. Bell (1937, Simon and Schuster) and H.
According to E.T.

When Newton was two years old, his mother went to live with her new husband, leaving her son in the care of his grandmother. His father had died three months before Newton's birth. Newton was premature and no one expected him to live; indeed, his mother is reported to have said that his body at that time could have fit inside a quart mug. Newton was born in Woolsthorpe-by-Colsterworth, a hamlet in the county of Lincolnshire.

. Finally, he studied the speed of sound in air, and voiced a theory of the origin of stars. Newton also developed a law of cooling, describing the rate of cooling of objects when exposed to air; the binomial theorem in its entirety; and the principles of conservation of momentum and angular momentum. He was the first to realise that the spectrum of colours observed when white light passed through a prism was inherent in the white light and not added by the prism as Roger Bacon had claimed in the 13th century.

He is also notable for his arguments that light was composed of particles (see wave-particle duality). He would expand these laws by arguing that orbits (such as those of comets) were not only elliptic, but could also be hyperbolic and parabolic. Newton is also credited with providing mathematical substantiation for Kepler's laws of planetary motion. He is associated with the scientific revolution and the advancement of heliocentrism.

Newton was the first to promulgate a set of natural laws that could govern both terrestrial motion and celestial motion. He is considered a genius of the highest order. While they both discovered calculus nearly contemporaneously, their work was not a collaboration. Newton also shares credit with Gottfried Wilhelm Leibniz for the development of differential calculus.

Sir Isaac Newton, FRS (25 December 1642 – 20 March 1727 by the Julian calendar in use in England at the time; or 4 January 1643 – 31 March 1727 by the Gregorian calendar) was an English physicist, mathematician, astronomer, philosopher, and alchemist who wrote the Philosophiae Naturalis Principia Mathematica (published 5 July 1687¹), where he described universal gravitation and, via his laws of motion, laid the groundwork for classical mechanics. An Historical Account of Two Notable Corruptions of Scripture(1754). Arithmetica Universalis (1707). Reports as Master of the Mint (1701-1725).

Opticks (1704). Philosophiae Naturalis Principia Mathematica (1687). De Motu Corporum (1684). Method of Fluxions (1671).