Scientific Instruments of the Seventeenth and Eighteenth Centuries |
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Page 91
... English ships . The Navigation Act , which was to be one of the main causes of English maritime supremacy , coincided with the beginning of the great scientific movement in England . Shortly afterwards the Bank of England and the East ...
... English ships . The Navigation Act , which was to be one of the main causes of English maritime supremacy , coincided with the beginning of the great scientific movement in England . Shortly afterwards the Bank of England and the East ...
Page 92
... English glassmaker to another , and from 1755 onwards , the use of flint glass guaranteed the supremacy of the English work- shops since they had at their disposal the material needed for making achromatic lenses . Only in the second ...
... English glassmaker to another , and from 1755 onwards , the use of flint glass guaranteed the supremacy of the English work- shops since they had at their disposal the material needed for making achromatic lenses . Only in the second ...
Page 102
... English pioneers . The war , moreover , favoured the development of national industries , by reducing foreign competition . This unsatisfactory situation was not confined to the French workshops . Italy , which had produced such ...
... English pioneers . The war , moreover , favoured the development of national industries , by reducing foreign competition . This unsatisfactory situation was not confined to the French workshops . Italy , which had produced such ...
Contents
Illustrations | 6 |
The Workshops of the Seventeenth Century | 77 |
Economic and Social Factors | 90 |
Copyright | |
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Académie achromatic activity adopted alidade already angle apparatus appear Arts astronomical axis balance barometer became brass carried Cassini centre circle collection compasses consisted constructed constructors continued dated described divided division eighteenth century employed engine England English engraved equal equipped fixed France French give glass graduated half important improvements industry instru instrument makers invented Italy known later lathe length lens lenses Leyden London machine makers means measuring mechanical mentioned ments metal method microscope mirror mounted moved Museum objectives observations observatory obtained optical optician Paris period permitted physical placed plate position possible precision presented produced published quadrant Ramsden readings reflecting remained result Royal rule scale Sciences scientific screw sector seventeenth century side sights signature signed telescope telescopic sights thermometers tool tube turn vertical workshop