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Influence machine
An influence machine, here after James Wimshurst, separates electrical charges by means of mechanical work using electrostatic induction, i.e. the displacement of electrical charges in conductors in the electrical field. The machine shown here stores the electrical charges in two Leiden bottles and can be used, for example, to demonstrate spark discharges. At the end of the 19th century, such machines were used to generate high voltage, e.g. for X-ray tubes.
Unknown / ca. 1900
X-ray sphere with timer
The X-ray sphere from Siemens-Reiniger-Werke represented a significant innovation in the field of X-ray imaging technology in medicine. For the first time, it combined the X-ray tube and the necessary high-voltage power supply in a compact and radiation-safe housing and required only a standard 220 V AC connection for operation. With a suitable stand, the X-ray sphere was mobile and could be brought directly to the patient for X-ray exposures.
Siemens-Reiniger-Werke AG, Erlangen / 1934 - 1974
Loop or - rotating mirror oscillograph
A loop oscillograph shows the time course of electrical signals. Light falls on an oscillating mirror located in a magnetic field and mounted on a wire loop. When current flows through the wire loop, the mirror is deflected in proportion to the current intensity and produces a band of light in the vertical plane. By means of reflection at the rotating mirror and projection onto a screen, the band of light is spread out horizontally to make the time course of the current visible.
Siemens & Halske, Berlin / ca. 1950
Collection of Historical Physics Instruments »Physicalisches Cabinet«
The collection shows experiments and objects from teaching and research from the beginnings of physics in Göttingen in the 18th century to the first half of the 20th century, when physics in Göttingen achieved worldwide prominence. Highlights of the collection are exhibits from the time of Lichtenberg, Gauss and Weber and the beginnings of modern physics. It is not only part of the teaching, but also an important contribution to the public relations work of the Faculty of Physics.
