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In 1668 Robert Hooke recognised the utility of a barometer which could foretell storms at sea, but neither he nor his contemporaries in Britain or elsewhere in Europe succeeded in constructing such an instrument which would work reliably on a moving ship. Theorists and instrument makers, including Hooke, Amontons, De Luc, Passement, Magellan and Blondeau proposed novel forms of tube, but at the time it was not possible to work glass to the suggested shape. The competition between France and England was won by Edward Nairne, who devised the constricted-tube barometer for Captain Cook's second voyage of 1772-75. Nairne barometers were soon taken on other British exploring voyages, but French ships were slow to follow the pattern, possibly in consequence of naval disruption following the Revolution. The earliest Nairne examples were adapted from the domestic barometer, with the tube mounted on a flat back, but within the lifetime of Nairne &; Blunt marine barometers adopted the form common for most of the nineteenth century, with the tube enclosed within a square or round-section wooden frame.  相似文献   

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By now, the story of T. D. Lysenko's phantasmagoric career in the Soviet life sciences is widely familiar. While Lysenko's attempts to identify I. V. Michurin, the horticulturist, as the source of his own inductionist ideas about heredity are recognized as a gambit calculated to enhance his legitimacy, the real roots of those ideas are still shrouded in mystery. This paper suggests those roots may be found in a tradition in Russian biology that stretches back to the 1840s—a tradition inspired by the doctrines of Jean-Baptiste Lamarck and Etienne and Isidore Geoffroy Saint-Hilaire. The enthusiastic reception of those doctrines in Russia and of their practical application—acclimatization of exotic life forms—gave rise to the durable scientific preoccupation with transforming nature which now seems implicated in creating the context for Lysenko's successful bid to become an arbiter of the biological sciences.  相似文献   

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The Surrey Institution, Blackfriars, founded in 1808, was, after the Royal Institution and London Institution, the third establishment in London aimed at fostering and disseminating scientific, technical, and literary knowledge and understanding among a wider public. The Institution offered its proprietors and subscribers the use of an extensive reference library and reading rooms and, most importantly, the opportunity to attend courses of lectures on scientific, technological, and other subjects. Though popular in approach, the lectures conformed to high educational standards and were delivered by recognized authorities in their fields. In the Surrey Institution's celebrated auditorium, the 'Rotunda', there appeared over the years such notable scientists as Accum, Thomson, and Gurney on chemistry, Millington, Mason Good, and Woodward on natural philosophy, Bakewell on geology, and Shaw on natural history; literature was brilliantlyrepresented by Coleridge and Hazlitt. During its relatively brief life-span (1808-23)-cut short by financial stringencies-the Surrey Institution provided access to scientific knowledge and thinking to a wide and appreciative audience. As a meeting place fo scientists and men of business with mercantile and manufacturing interests, it performed an important function in cross-fertilizing and reinforcing ideas on innovation and enterprise against the background of the ongoing Industrial Revolution. The present article attempts to supply a historical account, so far lacking, of the foundation, activities and achievements of this significant Institution of the metropolis.  相似文献   

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Snell's law of refraction did not affect the study of optics until twenty‐five years after its publication in 1637 and by then its universality threatened to break down already. Two optical phenomena—colour dispersion and strange refraction—were discovered that did not conform to the sine law. In the early 1670s, Isaac Newton and Christiaan Huygens respectively investigated these phenomena. They tried to describe the irregular behaviour of light rays mathematically and to reconcile it with ordinary refraction. This paper discusses their investigations and aims at throwing new light on the history of seventeenth‐century optics. Both initially approached the problem in a mathematical way in which they built on Descartes' analysis of refraction. This is surprising because it contradicts their earlier dismissal of Descartes' account and it does not fit our picture of them as mathematical physicists. By looking more closely at their early investigations it becomes clear that Newton and Huygens first had to develop the approach to optics of their later writings. After Descartes placed the issue of the physical nature of light rays on the scientific agenda in 1637, they recognized its purport in their struggles with colour dispersion and strange refraction. It was at this point that their physical optics evolved from the traditional geometrical optics with which they had started.  相似文献   

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This paper analyses documents from several US archives in order to examine the controversy that raged within the US scientific community over Dayton C. Miller's ether-drift experiments. In 1925, Miller announced that his repetitions of the famous Michelson-Morley experiment had shown a slight but positive result: an ether-drift of about 10 kilometres per second. Miller's discovery triggered a long debate in the US scientific community about the validity of Einstein's relativity theories. Between 1926 and 1930 some researchers repeated the Michelson-Morley experiment, but no one found the same effect as Miller had. The inability to confirm Miller's result, paired with the fact that no other ether theory existed that could compete with special relativity theory, made his result an enigmatic one. It thus remained of little interest to the scientific community until 1954, when Robert S. Shankland and three colleagues reanalysed the data and proposed that Miller's periodic fringe shift could be attributed to temperature effects. Whereas most of the scientific community readily accepted this explanation as the conclusion of the matter, some contemporary anti-relativists have contested Shankland's methodology up to now. The historical accounts of Miller's experiments provide contradictory reports of the reaction of the US scientific community and do not analyse the mechanisms of the controversy. I will address this shortcoming with an examination of private correspondence of several actors involved in these experiments between 1921 and 1955. A complex interconnection of epistemic elements, sociological factors, and personal interests played a fundamental role in the closure of this experimental controversy in the early 1930s, as well as in the reception of Shankland's reanalysis in the 1950s.  相似文献   

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