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According to ISO 764 or its equivalent DIN 8309 (Deutsches Institut für Normung - German Institute for Standardization) a watch must resist exposure to a direct current magnetic field of 4800 A/m. The watch must keep its accuracy to ±30 seconds/day as measured before the test in order to be acknowledged as a magnetic-resistant watch.
The gauss is the unit of magnetic flux density B in the system of Gaussian units and is equal to Mx/cm 2 or g/Bi/s 2, while the oersted is the unit of H-field. One tesla (T) corresponds to 10 4 gauss, and one ampere (A) per metre corresponds to 4π × 10 −3 oersted.
Simplified diagram of a multistage coilgun with three coils, a barrel, and a ferromagnetic projectile. A coilgun is a type of mass driver consisting of one or more coils used as electromagnets in the configuration of a linear motor that accelerate a ferromagnetic or conducting projectile to high velocity. [1]
A Connecticut man who allegedly killed a woman and her infant son in November targeted the woman because she owed him $400 for renting a vehicle of his, arrest reports said on Monday.
The New York Yankees are bringing in another veteran hitter this offseason, signing first baseman Paul Goldschmidt to a reported one-year, $12.5 million deal, per multiple reports.
Investigators have spoken twice with the man, who said they first met around 9 p.m. local time Nov. 11 as she was leaving the airport. She was looking for directions to get to the train station ...
The 4800 Class locomotives retained their original numbers until the GWR decided to experimentally convert twelve 2800 Class 2-8-0s for oil-firing. It was decided that the converted engines would be reclassified as the 4800 Class and so the 75 tank locomotives already carrying this designation were reclassified as the 1400 Class with running ...
Detail of PRR 4800 showing the builder's plate. In 1933, the Pennsylvania Railroad decided to replace the P5, and instructed General Electric and Westinghouse to design an electric locomotive that was more powerful than the P5, capable of speeds of 100 miles per hour (161 km/h), have a lighter axle load and to be double-ended with a cab in the center of the carbody. [3]