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81QF 12 pounder 12 cwt AA gun — Infobox Weapon name=Ordnance QF 12 pounder 12 cwt anti aircraft gun caption=Mk I* on WWI AA traveling platform mounting origin=UK type=Naval gun Coast defence gun Anti aircraft gun is ranged=yes is artillery=yes is UK=yes service=1914 1940s (as… …
82motion-picture technology — Introduction the means for the production and showing of motion pictures. It includes not only the motion picture camera and projector but also such technologies as those involved in recording sound, in editing both picture and sound, in… …
83North American P-51 variants — Main article: North American P 51 Mustang Further information: North American A 36, F 82 Twin Mustang The North American P 51 Mustang was an American long range single seat fighter aircraft that entered service with Allied air forces in the… …
84Contact mechanics — Continuum mechanics …
85photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
86Geotechnical engineering — [ Boston s Big Dig presented geotechnical challenges in an urban environment.] Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. Geotechnical engineering includes investigating …
87Vickers Valiant — For other uses see: Valiant infobox Aircraft name = Vickers Valiant type = Strategic bomber manufacturer =Vickers Armstrongs caption =RAF Valiant in anti flash white designer = first flight =18 May avyear|1951 introduced =1955 retired =January… …
88B-47 Stratojet — Infobox Aircraft name=B 47 Stratojet type=Strategic bomber manufacturer=Boeing caption=Boeing B 47E 65 BW (AF Serial No. 51 5257) during rocket assisted takeoff test. designer= first flight=17 December 1947 introduced=June 1951 retired=1966, B… …
89SKS — For other uses, see SKS (disambiguation). SKS SKS Carbine Type Semi automatic rifle Place of origin …
90Apache Point Observatory Lunar Laser-ranging Operation — APOLLO shooting a laser at the Moon. The laser pulse is reflected from the retroreflectors on the Moon (see below) and returned to the telescope. The round trip time tells the distance to the Moon to great accuracy. In this picture the Moon is… …
