Pergament
Pergamentfremstilling i 1568
Pergament er lavet af dyrehud. Navnet stammer fra byen Pergamon i Tyrkiet. Pergament bruges til at skrive og trykke bøger på – og til bogbind.
Det ældste fund er fra Egypten 2700 f.Kr. Særligt fint og tyndt kalveskind kaldes velin (med fransk – eller dansk – udtale).
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Zoomed view of carbon nanotube.svg
Forfatter/Opretter:
Diagram of a carbon nanotube.
Forfatter/Opretter:
- File:Carbon nanotube.svg: Guillaume Paumier (user:guillom)
- derivative work Cliff12345
Diagram of a carbon nanotube.
Carl Spitzweg 021.jpg
This file is a reproduction of the original work painted circa 1850 and housed at the Museum Georg Schäfer (Schweinfurt, Germany).
A second exemplar of the work, painted circa 1851, is housed at the Central Library of Milwaukee (Wisconsin, USA).
A 3rd exemplar, painted in 1854, is believed to be housed in a private collection.
This file is a reproduction of the original work painted circa 1850 and housed at the Museum Georg Schäfer (Schweinfurt, Germany).
A second exemplar of the work, painted circa 1851, is housed at the Central Library of Milwaukee (Wisconsin, USA).
A 3rd exemplar, painted in 1854, is believed to be housed in a private collection.