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2. Tripod head - Wikipedia

   en.wikipedia.org/wiki/Tripod_head

   The base mount is the connection between the tripod head and the tripod legs. Often the head will have a fairly large, flat base that sits on top of the tripod, and uses cork or rubber to increase the friction between the two, to prevent the head from unscrewing during use. The actual connection between the two is often made with a screw.

3. Manfrotto - Wikipedia

   en.wikipedia.org/wiki/Manfrotto

   In 2010, Manfrotto changed its brand slogan from "Manfrotto Proven Professional" to "Manfrotto Imagine More". [2] In May 2011, Manfrotto launched an online competition asking people to share short posts about imagination on Twitter and Facebook for the Manfrotto Imagine More Manifesto, [7] as well as to submit pictures representing imagination on the Manfrotto Imagine More website. [8]

4. Chadwell O'Connor - Wikipedia

   en.wikipedia.org/wiki/Chadwell_O'Connor

   The O'Connor head was so successful that Disney immediately ordered 10 more. [18] This film won the first Academy Award for Documentary Feature in 1953. O'Connor founded a part-time business in 1952 to make the heads and by 1969 it was so successful that he left the power company to work full-time on camera heads and steam engines at O'Connor ...

5. Miller Camera Support Equipment - Wikipedia

   en.wikipedia.org/wiki/Miller_Camera_Support...

   Robert Eric Miller, an Australian engineer from Sydney, invented the fluid head for motion picture cameras for which he was granted an Australian patent in 1946 and US patent in 1949. [5] He founded Miller Camera Support Equipment in 1954, manufacturing fluid heads and tripods. The same year, he developed the Miller Viscosity Drag.

6. Quadruplex videotape - Wikipedia

   en.wikipedia.org/wiki/Quadruplex_videotape

   The quadruplex format employs segmented recording; each transversely recorded video track on a 2-inch quad videotape holds one-sixteenth (NTSC) or one-twentieth (PAL) [6] of a field of interlaced video. (For NTSC systems, the math suggests 15 transverse head passes, each consisting of 16 lines of video, are required to complete one field.)

7. Net positive suction head - Wikipedia

   en.wikipedia.org/wiki/Net_positive_suction_head

   In a hydraulic circuit, net positive suction head (NPSH) may refer to one of two quantities in the analysis of cavitation: The Available NPSH (NPSH A): a measure of how close the fluid at a given point is to flashing, and so to cavitation. Technically it is the absolute pressure head minus the vapour pressure of the liquid.