The Earth at night circa 2000oct23.
Credit: NASA: Visible Earth. NASA allows free use of this image, but apparently has not declared it public domain which is NASA's usual practice. Image by Craig Mayhew and Robert Simmon, NASA GSFC.
Download site: NASA: Visible Earth.
The Etruscan shrew is the smallest known living mammal.
Credit: Wikipedia contributor. According to Wikepedia permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version.
Download site: Wikipedia: Image:Etruscanpygmyshrew.JPG.
Mathematician Emmy Noether (1882--1935) when young.
Credit: Unknown it seems. The image is obviously from the early 20th century, probably the before circa 1910. The copyright is probably ended and it is even likely that no one knows who held it.
Download site: St. Andrews University: The MacTutor History of Mathematics Archive.
Karl Benz's 1894 Velo model which was entered in the first car race.
The don't make them like this any more.
Credit: Softeis. According to Wikepedia permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version.
Download site: Wikipedia: Image:Benz-velo.jpg.
Philosopher, mathematician, physicist Gottfried Wilhelm von Leibniz (1646--1716) with big hair.
I think that hair is phoney.
Credit: Bernhard Christoph Francke (?--1729). No copyright existed at the time of this painting and Wikepedia maintains that the image is in the public domain.
Download site: Wikipedia: Image:Gottfried Wilhelm von Leibniz.jpg
The electromagnetic spectrum with a blow-up of the visible range.
Credit: Philip Ronan who has given permission to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version.
Download site: Wikipedia: Image:EM spectrum.svg.
