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  2. Permanent magnet motor - Wikipedia

    en.wikipedia.org/wiki/Permanent_magnet_motor

    Alnico is a NRE permanent magnetic material used in permanent magnet motor applications such as magnetic speed and flow sensors, electric generators, and consumer goods. These magnets exhibit weaker performance in comparison to NdFeB and SmCo counterparts but still maintain high coercivity and are far cheaper due to their lack of rare earth metals.

  3. List of textbooks in electromagnetism - Wikipedia

    en.wikipedia.org/wiki/List_of_textbooks_in...

    Among the textbooks published after Jackson's book, Julian Schwinger's 1970s lecture notes is a mentionable book first published in 1998 posthumously. Due to the domination of Jackson's textbook in graduate physics education, even physicists like Schwinger became frustrated competing with Jackson and because of this, the publication of ...

  4. Electropermanent magnet - Wikipedia

    en.wikipedia.org/wiki/Electropermanent_magnet

    An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by a pulse of electric current in a wire winding around part of the magnet. The magnet consists of two sections, one of "hard" (high coercivity) magnetic material and one of "soft" (low coercivity) material. The ...

  5. Electromagnetic door holder - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_door_holder

    An electromagnetic door holder (electromagnetic door holder and release or hold-open device, sometimes informally called a mag hold open or electric doorstop) is a simple electromechanical mechanism which can be used to hold a fire door or security door open until given a signal to release.

  6. Ivy League teams to be eligible for FCS playoffs beginning in ...

    www.aol.com/sports/ivy-league-teams-eligible-fcs...

    Harvard tied with Dartmouth and Columbia atop the conference at 5-2 this season, but scored head-to-head wins over both teams. Officially, the Ivy League recognized all three teams as co-champions.

  7. Fire protection - Wikipedia

    en.wikipedia.org/wiki/Fire_protection

    Fire protection is the study and practice of mitigating the unwanted effects of potentially destructive fires. [1] [2] It involves the study of the behaviour, compartmentalisation, suppression and investigation of fire and its related emergencies, as well as the research and development, production, testing and application of mitigating systems.

  8. Donald Trump's Nov. 26 sentencing in hush money case on ... - AOL

    www.aol.com/news/donald-trumps-nov-26-sentencing...

    This story was updated to clarify the sentencing date was put on hold earlier this month. President-elect Donald Trump's Nov. 26 sentencing date in his New York hush money case is on hold as ...

  9. William C. Ballard, Jr. - Pay Pals - The Huffington Post

    data.huffingtonpost.com/paypals/william-c-ballard-jr

    From January 2008 to December 2012, if you bought shares in companies when William C. Ballard, Jr. joined the board, and sold them when he left, you would have a -5.2 percent return on your investment, compared to a -2.8 percent return from the S&P 500.