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A trigatron is a type of triggerable spark gap switch designed for high current and high voltage (usually 10–100 kV and 20–100 kA, though devices in the mega-ampere range exist as well). It has very simple construction and in many cases is the lowest cost high energy switching option.
A spark plug.The spark gap is at the bottom. A spark plug uses a spark gap to initiate combustion.The heat of the ionization trail, but more importantly, UV radiation and hot free electrons (both cause the formation of reactive free radicals) [citation needed] ignite a fuel-air mixture inside an internal combustion engine, or a burner in a furnace, oven, or stove.
The Alki is a fireboat noted for its long service in Seattle, Washington. [2] The boat was built in 1927 and is 123 feet (37 m) long. She was Seattle's third fireboat. [3] She was built with gasoline engines, which were replaced with diesels in 1947.
Stan grew up in Seattle, was an oarsman at the University of Washington and graduated with a degree in engineering. In the late 1960s, management of the company became Stan's responsibility while George devoted himself to constructing cedar single shells. In addition to his role as a boat builder, Stan also was a successful rowing coach.
Seattle 100 30.5 181 123 1909 O Abe Perkins: 106794 prop misc 1890 Seattle 32 9.8 14 8.0 1920 A Aberdeen: 106544 stern psgr 1888 Aberdeen: 78 23.8 98 84 1901 O Aberdeen: 209852 prop whaler 1912 Seattle 88 26.8 1949 D A.B. Graham: stern psgr 1898 Puget Sound 126 38.4 Acme: 107460 prop tug 1899 Seattle 60 18.3 31 21 B Active [3] 1232 side 1849
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Butterworth hatches are not the main access hatches, but are the servicing hatches, and are generally closed with a metal cover plate with a gasket that is fastened to the deck by a number of bolts which stick up from the deck. Holes on the edges of the plate fit over these bolts and the cover is fastened down with nuts or dogs.
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