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http://worldcat.org/entity/work/id/55160383

Magnetism

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http://schema.org/description

  • "Shows that magnetic force will act through anything; how to magnetize steel bars by single-strokes, separate strokes, and double strokes; and how to magnetize a glass tube filled with iron filings. Demonstrates the devastating effect of heat on a magnet."

http://schema.org/genre

  • "Shorts"
  • "Scientific films and video (Nonfiction)"