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  2. Pyle-National Company Plant - Wikipedia

    en.wikipedia.org/wiki/Pyle-National_Company_Plant

    The Pyle-National Company Plant is a historic industrial plant at 1334 North Kostner Avenue in the Humboldt Park neighborhood of Chicago, Illinois. The Pyle-National Company, which produced lights for steam locomotives and other heavy machinery, built the plant in 1916. The company was founded in 1897 by George C. Pyle, an inventor who patented ...

  3. Level crossings by country - Wikipedia

    en.wikipedia.org/wiki/Level_crossings_by_country

    On average, there is a level crossing each 2 kilometres (1.2 mi). [43] [44] An emergency button is installed on every level crossing in the country, allowing members of the public to report emergencies at a crossing to authorities, such as stalled vehicles or other obstacles. [45]

  4. Landau levels - Wikipedia

    en.wikipedia.org/wiki/Landau_levels

    If Zeeman splitting is included, each Landau level splits into a pair, one for spin up electrons and the other for spin down electrons. Then the occupation of each spin Landau level is just the ratio of fluxes = /. Zeeman splitting has a significant effect on the Landau levels because their energy scales are the same, =. However, the Fermi ...

  5. Level crossing signals - Wikipedia

    en.wikipedia.org/wiki/Level_crossing_signals

    The time interval may be controlled by a level crossing predictor, an electronic device which is connected to the rails of a railroad track, and activates the crossing's warning devices (lights, bells, gates, etc.) at a consistent interval prior to the arrival of a train at a level crossing. [1]

  6. Crossbuck - Wikipedia

    en.wikipedia.org/wiki/Crossbuck

    A special kind of crossing sign assembly was introduced on an experimental basis in Ohio in 1992, the "Buckeye Crossbuck". It included an enhanced crossbuck, reflective and with red lettering, and also a reflective plate reading "YIELD" below the crossbuck, whose sides are bent backwards in order to catch and reflect at a right angle the light ...

  7. Ohio could see northern lights this weekend. But what are ...

    www.aol.com/ohio-could-see-northern-lights...

    Get away from city lights and avoid trying to see them on the night of a full moon. The best time to view the aurora is within an hour or two of midnight, or 10 p.m. to 2 a.m. Ohio weather ...

  8. Level crossing - Wikipedia

    en.wikipedia.org/wiki/Level_crossing

    A level crossing is an intersection where a railway line crosses a road, path, or (in rare situations) airport runway, at the same level, [1] as opposed to the railway line or the road etc. crossing over or under using an overpass or tunnel.

  9. Will northern lights be seen in Ohio on June 4? New solar ...

    www.aol.com/northern-lights-seen-ohio-june...

    The northern lights could reappear over the United States in June, as the sun's rotation brings the sunspot responsible for the powerful May 10 solar storms around to face the Earth again ...