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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 criterion of resistance to magnetic fields is innovative. Until now, the ISO 764 Horology — Magnetic resistant watches standard defines that an antimagnetic watch must support a magnetic field of 4,800 A/m, which corresponds to 60 gauss. METAS certification subjects watches and movements to 15,000 gauss (1.5 tesla).
In the CGS system, the unit of the H-field is the oersted and the unit of the B-field is the gauss. In the SI system, the unit ampere per meter (A/m), which is equivalent to newton per weber, is used for the H-field and the unit of tesla is used for the B-field. [3]
Melania Trump directly commented for the first time about whether she will be joining President-elect Donald Trump in the White House full-time during his second term.. In an interview with Fox ...
Michael Brewer, one-half of Brewer & Shipley, has died. He was 80. On Tuesday, Dec. 17, his musical partner, Tom Shipley, confirmed the news of his death on Facebook
Oscillating plates rock from side to side, for a gentler sensation, while tri-plates vibrate up and down, side to side, and front to back. Some, more simple vibration plates also have a linear or ...
During the 20th century, the maximum energy product of commercially available magnetic materials rose from around 1 MGOe (e.g. in KS Steel) to over 50 MGOe (in neodymium magnets). [4] Other important permanent magnet properties include the remanence ( B r ) and coercivity ( H c ); these quantities are also determined from the saturation loop ...
The Multi-Band 6 is a radio control technology first introduced on the GW9200 Riseman in 2008 [60] and is a successor to the Multi-Band 5 (which supported synchronisation with five atomic time transmitters around the world) and Wave Ceptor (which supported synchronisation with atomic time transmitters present in the United States and Japan only ...