Showing papers in "Annals of Science in 1993"

Analytical chemistry and the ‘big’ scientific instrumentation revolution

Abstract: Summary By a close examination of changes in analytical chemistry between the years 1920 and 1950, I document the case that natural science has undergone and continues to undergo a major revolution. The central feature of this transformation is the rise in importance of scientific instrumentation. Prior to 1920, analytical chemists determined the chemical constitution of some unknown by treating it with a series of known compounds and observing the kind of reactions it underwent. After 1950, analytical chemists determined the chemical constitution of an unknown by using a variety of instruments which allow one to discriminate chemicals in terms of their physical properties. This transformation involved changes in the practice of analytical chemistry. It involved the development of a new family of scientific instrument-making companies, and a new level of capital expenditure necessary to do analytical chemistry. It involved the development of new means to disseminate information about scientific instrument...

Le dernier des procédés révolutionnaires: la fabrication et l'expertise de la poudre ronde (1795-1830)

Abstract: Resume Sous la Revolution, la conjoncture politique et militaire et l'echec de la poudre de muriate (chlorate) devaient conduire la France a privilegier la rationalisation des procedes de fabrication pour tenter d'accroitre la portee des armes. En 1796, la poudre ronde de J. P. Champy (1744–1816), successeur de Lavoisier a la tete du service des Poudres et salpetres, parut approcher de la poudre ideale: pour un prix de revient reduit, elle offrait une puissance suffisante et une securite optimale de fabrication et d'emploi. Malgre l'avis des experts scientifiques et militaires, sa production cessa pourtant a la suite d'un blocage politico-administratif. A la fin de l'Empire, J. S. Champy (1778–1845), perfectionna le procede de son pere pour en faire le premier systeme de production mecanise, dont l'introduction devait modifier l'organisation du travail et la configuration des poudreries creees sous la Restauration. Le succes du systeme conduisit paradoxalement a son echec apres une decennie de production ...

The chemists go to war: the mobilization of civilian chemists and the British war effort, 1914-1918.

Abstract: Summary The outbreak of war in 1914 found Britain unprepared for a lengthy conflict. British science and industry were particularly ill-prepared to meet the demands of static warfare. Within two years, however, mobilization had made appreciable strides, and, as Britain's munitions industries moved from crisis to confidence, Britain's chemical industry was transformed by an arsenal of ‘garrison chemists’, with skills either born of necessity or borrowed from overseas. At the same time, Britain's chemical leadership traced a path that led them from voluntarist to corporate methods, from private to public initiatives, and from individual to collective behaviours. This paper suggests four key stages in this mobilization, and hints at the significance of the war for the emergence of new sub-disciplines, for the careers of chemists, for academic-government relations in research, and for the image, status, and international position of British chemistry on the threshold of the postwar world.

Synthetic fuel production in prewar and world war II Japan: A case study in technological failure

Abstract: Summary Japan is a country largely lacking supplies of many essential natural resources including petroleum, coal, and iron ore. As her industrial base and economy expanded during the 1920s and 1930s, Japan's dependence on imports of these resources became increasingly evident. The onset of the Depression in the 1930s further threatened Japan's lifeline, and, in an effort to become economically independent and self-sufficient in natural resources (autarky), Japan's militaristic government pursued a policy of territorial expansion. Beginning in 1937, Japan's military forces swept out of Manchuria into China and then into Southeast Asia in search of strategic materials such as petroleum, coal, copper, zinc, and rubber. To achieve independence in petroleum, the Japanese developed a dual approach: they would acquire natural petroleum sources in Southeast Asia and at the same time establish a synthetic fuel industry for the conversion of coal to oil. Actually, the Japanese had begun research on synthetic fuel ...

Spectacles improved to perfection and approved of by the Royal Society

Abstract: Summary The letter sent by the Royal Society to the London optician, John Marshall, in 1694, commending his new method of grinding, has been reprinted, and referred to, in recent years. However, there has been no comprehensive analysis of the method itself, the letter and the circumstances in which it was written, nor the consequences for trade practices. The significance of the approval by the Royal Society of this innovation and the use of that approbation by John Marshall and other practitioners are examined. Gaps in existing accounts of Marshall's method are partly remedied by supplementing surviving written materials with accounts of contemporary, and present-day, trade practices based on his method. The reasons why Marshall and his contemporaries failed to record his method and specify his improvements are discussed. The reactions of the Spectacle Makers' Company and its more prominent members, both to the innovation itself and to the Royal Society's letter, are analysed. The impact of the new techn...

Science at the periphery: an interpretation of Australian scientific and technological dependency and development prior to 1914.

Abstract: Summary Divergent models applied to the chronology of Australian science leave us with two particular problems unresolved: was late-nineteenth-century science in this peripheral setting becoming more or less dependent on its British fountainhead, and what is the meaning of the reportedly narrow, utilitarian focus of ‘colonial science’? This paper argues that a complex interplay of imperial and local imperatives makes neat classification and periodization of Australia's scientific development a hazardous venture. Compounding the complexity is the nature of the relationship between science and technology, a factor largely ignored in the historiography of Australian science. Contrary to common assumptions, an empirical focus on science-technology links suggests that scientific and technological dependencies were not running in parallel, but out of phase, with science as the laggard. Indeed, it appears that science in late-nineteenth-century Australia may have developed more from its interaction with technolo...

An astrolabe attributed to Gerard Mercator, c. 1570

Abstract: Summary The Istituto e Museo di Storia della Scienza, Florence, Italy, possesses an astrolabe with five latitude plates that is now attributed to the Duisburg workshop of Gerard Mercator. Although it is known that Mercator made instruments, this is the first surviving example to be identified. Another latitude plate is shown to come from the workshop of the Florentine, Giovan Battista Giusti. A seventh plate, possibly engraved by Rumold Mercator, provides the only known Mercatorian polar stereographic projection. The role of Egnazio Danti, cosmographer to the Grand Duke of Tuscany, in the acquisition of the astrolabe in about 1570 is considered.

The early development of the magneto-electric machine

Abstract: Summary Attribution of the magneto-electric machine to Michael Faraday derives from the fact that it was he who proposed and named such a machine following his discovery of electromagnetic induction. Faraday did not, however, build such a machine although he did contrive to generate electricity with a revolving disc device. The technological origins of the first viable magneto-electric machines stem rather from a different concept in design although, of course, wholly dependent upon the newly discovered electromagnetic principle. Thus, although Faraday's position remains without question, it is, nevertheless, largely due to other practitioners, such as the instrument makers Pixii, Saxton, and Clarke, that practical development took place in the 1830s. The present paper considers the early development of the magneto-electric machine and pays particular attention to the communication of ideas among the community of philosopher-mechanics.

The San Francisco earthquake of 1906

Abstract: Summary Though among the most famous earthquakes in modern times, San Francisco (18 April 1906) has almost always been presented as nothing more than a great human disaster. While certainly that, we should regard it also as having had unusual significance in the development of seismology. Because the full extent of the San Andreas fault was thereafter recognized, and the association between faulting and earthquakes confirmed, we may consider the San Francisco earthquake of 1906 to be the first in which modern understanding of seismic causality prevailed.

Prague sextants of Tycho Brahe

Abstract: Summary Two sextants constructed for Tycho Brahe are preserved in the National Technical Museum in Prague. One was constructed by Erasmus Habermel, the other by Jost Burgi. Both were made in the year 1600. To overcome the observational errors, several improvements were made in the construction of these instruments, especially in the case of Burgi's sextant. It would appear both from these instruments and from his tables of sines that Tycho wanted to reduce the errors to one minute of arc. A replica of Burgi's sextant, which is currently under construction, will allow the accuracy of the instrument to be tested.

Oliver Heaviside and the significance of the British electrical debate

Abstract: Between 1886 and 1889, the British scientific and engineering communities witnessed several controversies regarding the principles underlying certain components of electrical circuits. The purpose of this paper is to show that these controversies should be regarded as reflecting a stage in the emergence of basic industrial research as a mediating agency between practical engineering and pure science. It will be suggested that the resolution of these controversies required careful formulation of approximations guided by a practical familiarity with the details of the relevant systems. This underscored an approach to basic engineering problems within which practical experience and scientific theory were regarded as equally fundamental.

Humboldt and the British: A note on the character of British science

Abstract: Summary Through his Romanticism, aesthetics, ‘religiosity’, the escapism which he offered urban readers, and the appeal that his search for unification, order, association, and simplicity had during a period of growing cultural fragmentation, Humboldt's translated writings asserted their magic on Regency and early Victorian lay and scientific minds.

John Elliot and the inhabited sun

Abstract: Summary In July 1787, Dr John Elliot, apothecary and scientist, assaulted Miss Mary Boydell in the streets of London. Elliotś defenders sought his acquittal on the grounds of insanity, and cited as proof a paper in which he alleged the existence of intelligent life on the surface of the sun. He has since become a stock character in the history of astronomy, routinely cited as a pathetic example of the ignorance of his age. His reputation is undeserved since his claims were well within the canon of the era, and since his anti-social behaviour may well be explained by considering the hazards of his profession. Rather than serving as an exemplar of science gone awry, Elliot's dilemma can provide an opportunity for fresh analysis of late eighteenth-century thought on solar structure and on the processes that sustain it.

Epact tables on instruments: Their definition and use

Abstract: Summary This paper examines the purport of epact tables encountered on scientific instruments, and explains their use. The epact is a valuable chronological aid for calculating the age of the moon. In handbooks of chronology, usually two types of epacts are distinguished: the epact used in medieval times, and the so-called Lilian epact used after 1582 in the Gregorian perpetual calendar. By examining the rules for calculating the age of the moon, it turns out that the Julian and Gregorian epacts encountered on instruments must be distinguished from the medieval and Lilian epacts. It is shown that the Julian epact was already in use in 1478, and that, by adjusting for the shift of ten days in the date of the vernal equinox, the Gregorian epact was derived from it in 1582. The common association of the latter with the Lilian epact employed in the Gregorian perpetual calendar is incorrect. It is further shown that in contrast to the medieval and Lilian epacts, which served purely ecclesiastical purposes, the...

Coleridge's construction of Newton

Abstract: Summary A self-conscious antagonism to Newtonian science is widely seen as characteristic of the Romantic movement, and Coleridge is routinely portrayed as one of the major representatives of this anti-Newtonian sentiment. Although such a view of Coleridge is correct, his hostility to Newton is puzzling. The attitudes that Coleridge objected to are often expressly denied in Newton's published writings, and Coleridge's own ‘dynamic’ philosophy was, in fact, remarkably like the conception of nature personally favoured by Newton. Coleridge, then, must have been objecting to something other than Newton's beliefs—to beliefs not in fact held by Newton, but by others. Commentators have noted Coleridge's distortion of Newton's philosophies, but have not explored this matter in any detail. The present paper attempts to redress this situation. As much of the historiography of Western philosophy presumes an unequivocal opposition between Romanticism and the Enlightenment, it is of importance to find that Coleridge a...

Of 'science and liberty': the scientific instruments of King's College and eighteenth century Columbia College in New York.

Abstract: A measure of the interest in and extent of science teaching in colonial American colleges may be judged to a large degree by their investment in scientific instruments and apparatus Fairly adequat

The Archaean Controversy in Britain: Part III—The rocks of Anglesey and Caernarvonshire

Abstract: Summary A detailed account is given of the development of the Archaean Controversy in Caernarvonshire and Anglesey. Sedgwick had found no base for his Cambrian in North Wales, but had intimated that some of the unfossiliferous rocks of the Lleyn Peninsula and Anglesey might be older than his Cambrian. He also described two ‘ribs’ of igneous rock: one running from Caernarvon to Bangor; the other inland, parallel to the first and crossing the Llanberis Pass at Llyn Padarn. The early Surveyors (especially Ramsay) supposed that these ‘ribs’ had altered the surrounding rocks, and the resulting ‘Altered Cambrian’ could be traced across the Menai Strait to Anglesey, where it formed the various metamorphic rocks of that island. This view (which thus denied the occurrence of Precambrian on Anglesey) was challenged by the usual coalition of ‘amateurs’ (Hicks, Hughes, Bonney, Callaway, Blake, etc.) with attempts being made to recognize a sequence of Archaean rocks in North Wales similar to that in Pembrokeshire. How...

Seasonal-hour sundials on vertical and horizontal planes, with an explanation of the scratch dial

Abstract: Summary The true form of the seasonal-hour sundial, in both vertical and horizontal planes, has been calculated by spherical trigonometry and displayed with the aid of computer graphics. These grids are presented, and show that the hour lines are in fact shallow curves at sites not on the equator. The curvature becomes very apparent at latitudes exceeding 50°. The true seasonal-hour pattern for a vertical dial at a latitude of 52·6°N is compared with the equiangular scratch dial.