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1SR Merchant Navy class — SR Merchant Navy class[1] Official Southern Railway photograph of 21C1 Channe …
2Scanning electron microscope — These pollen grains taken on an SEM show the characteristic depth of field of SEM micrographs …
3Steam locomotive — A steam locomotive is a locomotive powered by steam. The term usually refers to its use on railways, but can also refer to a road locomotive such as a traction engine or steamroller.Steam locomotives dominated rail traction from the mid 19th… …
4LNER Gresley Classes A1 and A3 — Disambiguation: LNER Class A1, LNER Thompson Class A1/1, LNER Peppercorn Class A1 LNER Gresley Classes A1 and A3[ …
5High speed photography — [ Eadweard Muybridge, first published in 1887.] High Speed Photography is the science of taking pictures of very fast phenomena. In 1948, the Society of Motion Picture and Television Engineers (SMPTE) defined high speed photography as any set of… …
6Oscilloscope history — This article discusses the history and gradual development of the Oscilloscope. Contents 1 Hand drawn oscillograms 2 Automatic paper drawn oscillograph 3 Photographic oscillograph 4 …
7SR Merchant Navy Class — Infobox Locomotive powertype=Steam name = SR Merchant Navy ClassHarvey] caption = Official Southern Railway photograph of 21C1 Channel Packet as built, 1941. designer = Oliver Bulleid builder = SR Eastleigh Works builddate = 1941 ndash;1949… …
8Coandă-1910 — Coandă 1910 …
9Aerial warfare — For military aviation forces and equipment see Military aviation. For strategic theory on the use of air forces, see Airpower. Warfare Military history Eras …
10History of the Armée de l'Air (1909–1942) — The Armée de l Air (literally, army of the air ) is the name of the French Air Force in its native language. It has borne this name only from August 1933 when it was still under the jurisdiction of the army. Today, several other countries, all of …
