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  2. Magic eye tube - Wikipedia

    en.wikipedia.org/wiki/Magic_eye_tube

    The magic eye (also called a cat's eye, or tuning eye in North America) is a specific type of such a tube with a circular display similar to the EM34 illustrated. Its first broad application was as a tuning indicator in radio receivers , to give an indication of the relative strength of the received radio signal, to show when a radio station ...

  3. Allen B. DuMont - Wikipedia

    en.wikipedia.org/wiki/Allen_B._DuMont

    Magic Eye tube used for tuning in a 1939 Mission Bell Model 410 radio. (green glow) In 1932, DuMont invented the magic eye tube, or Electron Ray Tube, [14] used as a tuning accessory in radios and as a level meter in mono and stereo home reel-to-reel tape recorders. In the 1930s the manufacture of mechanical panel meters were labor-intensive ...

  4. Magic Eye - Wikipedia

    en.wikipedia.org/wiki/Magic_eye

    Magic Eye is a series of books that feature autostereograms. After creating its first images in 1991, creator Tom Baccei worked with Tenyo, a Japanese company that ...

  5. List of Mullard–Philips vacuum tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_Mullard–Philips...

    EM1 (4678) – Top-view, "Magic Eye"-type tuning indicator, side-contact 8 Base; EM2 – Top-view, "Magic Eye"-type tuning indicator; has a 6.3 V/200 mA heater and was therefore marketed as C/EM2; identical AM2 except for heater ratings; EM4 – Dual-sensitivity, top-view, "Magic Eye"-type tuning indicator, EM34 with a side-contact 8 Base

  6. Autostereogram - Wikipedia

    en.wikipedia.org/wiki/Autostereogram

    In the late '90s many children's magazines featured autostereograms. Even gaming magazines like Nintendo Power had a section specifically made for these illusions. Since then several books were published with Magic Eye Beyond 3D: Improve Your Vision being one key publication that placed this intriguing illusion into the mainstream.

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  8. Mr. I. Magination - Wikipedia

    en.wikipedia.org/wiki/Mr._I._Magination

    The same child actors appeared on a rotating basis. Two would be selected to ask about a career, occupation, activity, and such. Tripp would then play a "magic" slide flute, then he and the children would board a train and travel to Imagination Land, where they would meet a professional from each of the two areas for that week's show. [5]

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