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Fireside Chat ‘From Galvanometers to Oscilloscopes: The development of instruments to detect and record electrical signals 1850 to 1970’

On-line, for SIS-members only.

Duddell double beam oscillograph, 1909. By Robert Whitworth. SynopsisThese days life is so dependent on electrical devices that we take them for granted. This chat will use instruments from the historic collection at the University of Birmingham to illustrate the challenges faced by early workers on electrical systems. We start with detecting direct currents with …

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Fireside Chat ‘Exponential ex machine – a quest from history to action’

On-line, for SIS-members only.

By Pietro Milici and Frédérique Plantevin. Abstract: In the late 17th century, scholars like Huygens and Leibniz sketched some machines to justify the existence of transcendental curves by solving inverse tangent problems. Some decades later, Giovanni Poleni (1683-1761), an Italian polymath and professor at the University of Padua, designed the first effective machines for the …

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Fireside Chat: Restoring Scientific Instruments – Aims and Methods

On-line, for SIS-members only.

A petrographic microscope No. II made by R. Fuess, Berlin/Steglitz before and after the restoration. The authentic restoration of scientific instruments is a technique, which needs comprehensive knowledge of technical methods and genuine recipes as well as craftsmanship and professional machinery. This talk presents the different degrees of restoration beginning from gentle cleaning to complete …

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Fireside Chat: Creating digital records on shared public storage

On-line, for SIS-members only.

Presented by Tom Jackson, UK Example of an object owned by an institution (image by T. Jackson). This presentation provides one possible answer to the question of how to create and where to store digital records about objects of historical interest including the restoration of historic scientific instruments. In particular objects which are not owned …

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