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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.
10 −17 T 10 aT: 100 fG: 10 −16 T 100 aT: 1 pG: 10 −15 T femtotesla 1 fT: 10 pG: 2 fT: 20 pG: 10 −14 T 10 fT: 100 pG: 10 −13 T: 100 fT: 1 nG: Human brain: 10 −12 T picotesla 1 pT: 10 nG: 10 −11 T: 10 pT: 100 nG "Potholes" in the magnetic field found in the heliosheath around the Solar System reported by Voyager 1 (NASA, 2006) [4 ...
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.
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One difference between the Gaussian and SI systems is in the factor 4π in various formulas that relate the quantities that they define. With SI electromagnetic units, called rationalized, [3] [4] Maxwell's equations have no explicit factors of 4π in the formulae, whereas the inverse-square force laws – Coulomb's law and the Biot–Savart law – do have a factor of 4π attached to the r 2.
In physics, the meter water equivalent (often m.w.e. or mwe) is a standard measure of cosmic ray attenuation in underground laboratories.A laboratory at a depth of 1000 m.w.e is shielded from cosmic rays equivalently to a lab 1,000 m (3,300 ft) below the surface of a body of water.
Michigan’s agricultural college educated people to be well-informed citizens, as well as good farmers. [10] [14] [15] The school offered a three-part curriculum that balanced liberal arts, science and practical vocational studies. Williams also excluded Latin and Greek studies from the early curriculum. The College did require three hours of ...
6.48 m (21 ft 3 in)+0.5 Antonio Palacios 1966-Apr-18 50 Grand Rapids, Michigan: 2016-Jul-16 USATF Masters Championships 6.50 m (21 ft 3 + 3 ⁄ 4 in)i Antonio Palacios 1966-Apr-18 50 Albuquerque, New Mexico: 2017-Feb-18 55-59 6.14 m (20 ft 1 + 1 ⁄ 2 in) +0.0 Brian Hankerson 1959-Oct-04 56 Alexandria, Virginia: 2015-Sep-6 Potomic Valley Games