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2. Wigwag (railroad) - Wikipedia

   en.wikipedia.org/wiki/Wigwag_(railroad)

   A Magnetic flagman wigwag signal in use in southern Oregon, June 2007. Wigwag is a nickname for a type of railroad grade crossing signal once common in North America, referring to its pendulum-like motion that signaled a train's approach.

3. Eddy current brake - Wikipedia

   en.wikipedia.org/wiki/Eddy_current_brake

   Disk electromagnetic brakes are used on vehicles such as trains, and power tools such as circular saws, to stop the blade quickly when the power is turned off.A disk eddy current brake consists of a conductive non-ferromagnetic metal disc attached to the axle of the vehicle's wheel, with an electromagnet located with its poles on each side of the disk, so the magnetic field passes through the ...

4. Rupes Nigra - Wikipedia

   en.wikipedia.org/wiki/Rupes_Nigra

   Detail from Gerardus Mercator's map of the Arctic (c. 1620 edition), showing the Rupes Nigra at the North Pole ('POLVS ARCTICVS'), surrounded by four large islands. The Rupes Nigra ("Black Rock"), a phantom island, was believed to be a black rock located at the Magnetic North Pole or at the geographic North Pole itself.

5. Top Gear: Polar Special - Wikipedia

   en.wikipedia.org/wiki/Top_Gear:_Polar_Special

   At Resolute, Nunavut, Clarkson and Hammond announce their intention to travel from the small hamlet to the 1996 location of the magnetic north pole.Hammond will travel via dog sled, aided by American explorer Matty McNair, while Clarkson and co-presenter James May attempt to beat them, travelling by motor vehicle, a feat that had not before been achieved.

6. North magnetic pole - Wikipedia

   en.wikipedia.org/wiki/North_magnetic_pole

   The north magnetic pole, also known as the magnetic north pole, is a point on the surface of Earth's Northern Hemisphere at which the planet's magnetic field points vertically downward (in other words, if a magnetic compass needle is allowed to rotate in three dimensions, it will point straight down).

7. California’s evacuees agonized over when to leave and what to ...

   www.aol.com/news/california-evacuees-agonized...

   A vintage green-leather Rolex watch case. An Alekos Fassianos painting. A hard drive and albums with family photos. Phone chargers and laptops. Medications and passports, of course. Some clothes ...