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university's International Center will assist you, if you have any questions. Please do not hesitate to contact us! Classes in the fall semester Classes in the spring semester

Water Prism Listen Whilst being recognised as one of Germany's poets of the Romantic era, Goethe was also a romantic natural philosopher and natural scientist, just as one would expect from a polymath

Leeuwenhoek Microscope Listen Antoni van Leeuwenhoek (1632 – 1723) was a Dutch natural philosopher and to this day very much known for the development of several hundred microscopes. He produced the l

Reading Stone Listen A Reading Stone is a thick plano-convex lens and can be considered to be the prototype of modern magnifying glasses. It was and still is put to use to magnify minute writings. fur

Camera Obscura Listen A Camera Obscura is an darkened room or volume into which light can shine through a pin hole, sometimes a pin hole combined with a lens. On the wall opposite to the entrance hole

Camera Lucida Listen The Camera Lucida, sometimes known as Wollaston prism, consists of an upright brass column, to which a prism holder is mounted. By looking through the prism you can see a sheet of

Condensator Straw Electroscope Listen The Condensator Straw Electroscope was first described by Alessandro Volta in 1787. Two thin straws are hung up inside of a jar so they can oscillate freely witho

Electrophorus Listen The Electrophorus is an electrostatic generator, developed by Wilcke around 1761 and popularised by Volta towards the end of the 18 th century. The electrophorus consists of a res

Lichtenberg's Double Electrophorus Listen The Double Electrophorus is a further development from the Electrophorus , capable to produce and provide both electrostatical charges by means of electrostat

from the direct contact between the two metal plates and thus seperated them by means of a piece of paper. further reading Volta, A. (1800). On the Electricity Excited by the Mere Contact of Conducting