15 Matching Annotations
  1. Jul 2026
    1. Other ideas,such as the electric pen, looked promis-ing, at least at first, judging from com-ments in the library press in 1877 and1879. The pen's story proves that inven-tions must not only serve a general need,they must adapt to the specific require-ments of libraries and conform withother existing technologies. Invented byThomas Alva Edison and patented in1876, the electric pen was a writing in-strument that used electromagnets and asmall storage battery. The actual pen,connected by wire to the power source,resembled a sewing needle; it producedsmall punctures in the form of letters andnumbers, and when an inked roller waspassed over the resulting stencil plate,legible copies could be made.
  2. Jan 2026
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  9. Aug 2015
    1. “I believe that the motion picture is destined to revolutionize our educational system and that in a few years it will supplant largely, if not entirely, the use of textbooks.”

      this is fascinating to me - i had no idea of his connections with education. Makes me wonder about Tesla's thoughts on education now. And how he'd feel about filmstrips, which are in essence super cheap motion pictures.