Replicas of some of Leonardo da Vinci's inventions, Clos Luce, Parc Leonardo da Vinci, Amboise, Indre-et-Loire, Loire Valley, Centre, France, Europe

3D-printed deployment mechanism for satellite solar panels

Scylla I, Theta-Pinch Machine, 1958

Goddard Rocket with Turbopumps, 1940

Perhapsatron, Early Fusion Power Device

Robert Goddard, American Rocket Scientist

Gothic Miniscule script on parchment from the Gutenberg Bible dating to circa 1455, originally part of a collection in Leipzig that was lost after 1945; reproduction dating to 1886

Revolving-field machine by Siemens and Halske in 1887, Department of Power Engineering, Deutsches Museum German museum, Munich, Bavaria, Germany, Europe

Alternators, Department of Power Engineering, Deutsches Museum German museum, Munich, Bavaria, Germany, Europe

Stele commemorating the invention of the first letters and the first alphabet, Jbeil, Byblos, Lebanon, Middle East, Orient

Stele commemorating the invention of the first letters and the first alphabet, Jbeil, Byblos, Lebanon, Middle East, Orient

Lighting car by Siemens and Halske in 1878, Deutsches Museum German museum, Munich, Bavaria, Germany, Europe

Edison light bulb with dandelion seeds on black background

Edison light bulb on black background