electric-contact grinding
81space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
82Thermite — is a pyrotechnic composition of aluminium powder and a metal oxide which produces an aluminothermic reaction known as a thermite reaction. It is not explosive, but can create short bursts of extremely high temperatures focused on a very small… …
83Concrete saw — A concrete saw being readied for use. The man in the background is preparing the hose to deliver water to cool the saw, whilst the operator is moving the saw to the required position. A substantial engine powers the unit …
84Emotiv Systems — is an Australian origin [ [http://emotiv.com/corporate/5 0/5 1.htm Contact ] ] electronics company developing brain computer interfaces based on electroencephalography (EEG) technology. Emotiv Systems was founded in 2003 by four scientists and… …
85Aluminium — Infobox aluminiumAluminium (Audio IPA|En uk aluminium1.ogg|ˌæljʊˈmɪniəm, IPA|/ˌæljəˈmɪniəm/) or aluminum (Audio IPA|En uk aluminum.ogg|/əˈluːmɪnəm/, see spelling below) is a silvery white and ductile member of the boron group of chemical elements …
86Keith Richards — Infobox musical artist Name = Keith Richards Img capt = Img size = 250 Landscape = Yes Background = solo singer Birth name = Alias = Keith Richard, Keef RiffHard, the Riffmaster Born = birth date and age|1943|12|18|df=y Dartford, Kent, England… …
87USS Sargo (SS-188) — USS Sargo (SS 188), the lead ship of her class of submarine, was the first ship of the United States Navy to be named for the sargo.Her keel was laid on 12 May 1937 by the Electric Boat Company in Groton, Connecticut. She was launched on 6 June… …
88Tape head — For the album by King s X, see Tape Head. A tape head is a type of transducer used in tape recorders to convert electrical signals to magnetic fluctuations and vice versa. Contents 1 Principles of operation 1.1 Reversibility 1.2 Head g …
89Florida Museum of Natural History — Coordinates: 29°38′09″N 82°22′13″W / 29.63583°N 82.37028°W / 29.63583; 82.37028 …
90Lafleche, Saskatchewan — Lafleche is a small community in southwest Saskatchewan, Canada. The population of Lafleche is approximately 500. Community profileIn 1913 the Canadian Pacific Railway (CPR) came to Lafleche. In 1937 after eight consecutive crop failures, the… …
