Цеппелин над Летним садом
Русский: Цеппеллин над Летним садомТатарча/tatarça: Җәйге бакча өстендәге Сәпәллин Public domain image of an airship, no copyright restrictions image - Picryl description
Cavendish hydrogen - Public domain drawing
Scan of a drawing of Cavendish's apparatus for making hydrogen gas
Patent Drawing of Engine - Rivaz Engine - . Public domain image
Uploaded from Eckermann, Erik (2001). World history of the automobile. SAE. pp. 18 - 19. ISBN 076800800X. yLZeQwqNmdgC&pg=PA18&dq=fran%C3%A7ois+isaac+de+rivaz+engine&hl=en&ei=jVG9TdG2Hsy38gPv1eC2BQ&sa=X&oi=bo... More
Flasza.Woulfa
Woulfe bottle ("bubble bottle", marked as A) used in hydrogen generator
Hydrogen from natural gas schematics
Hydrogen_from_natural_gas_schematics
Daniellscher Hahn - Public domain sheet music scan
Deutsch: Daniellscher Hahn nach John Frederic Daniell (* 12. März 1790 in London; † 13. März 1845 ebenda)
Hydrogen balloon at upper air
Hydrogen filled balloon ready for launch. On the right is the hydrogen shed and on the far right is the heater shed, which is seperate due to the possiblity of fire. Photo taken at Cambridge Bay Upper Air, Nun... More
Patent Drawing of Engine - De Rivaz IC Engine detail - . Public domain...
Uploaded from reproduction in - Michelet, Henri (1965). L'inventeur Isaac de Rivaz: 1752 - 1828. Editions Saint-Augustin. Retrieved 2011-05-28. Wf-nrnUaZxAC&printsec=frontcover#v=onepage&q&f=false Page 215
Hidrogenmezer
Hydrogen maser Magyar: Hidrogénmézer
Daniellscher Hahn Orig. - Public domain sheet music scan
Deutsch: Daniellscher Hahn, Originalzeichnung