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Certain diving watches produced by Sinn as mission timers (in German: "Einsatzzeitmesser") for professional users are also protected against magnetic fields up to 1,000 Gauss / 80,000 A/m, using a protective sheath consisting of a closed, magnetically soft inner case that includes the dial, the movement holding ring and the case back. [1]
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).
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.
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.
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Nearly three out of 10 U.S. drugstores that were open during the previous decade had closed by 2021, new research shows. Black and Latino neighborhoods were most vulnerable to the retail pharmacy ...
As such, the game will begin at 8:20 p.m. ET, as is customary for NBC's "SNF" games in 2024. The Packers (8-3) are looking to keep pace with the Lions (10-1) and Vikings (9-2) in the loaded NFC North.
If the coordinate system is shifted to center it on m 1 and rotated such that the x-axis points in the direction of m 1 then the previous equation simplifies to [9] = () = ( ), where the variables r and θ are measured in a frame of reference with origin in m 1 and oriented such that m 1 is at the origin pointing in the x-direction.