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  1. #1
    Michel Hardy-Vallée's Avatar
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    Pentax Asahi Optical Co. Logo

    I know everyone says that the old "AOCo" logo for Pentax camera is supposed to look like a pentaprism, but something is bugging me about that: first, it has six, not five sides (cf. http://www.cameraquest.com/pentorig.htm for the AOCo logo). Second, it looks nothing like a pentaprism (cf. http://en.wikipedia.org/wiki/Pentaprism).

    On the other hand, it really, really looks like a nice silver grain, like this:
    http://www.kodak.com/US/images/en/co.../tgrainSEM.jpg

    But given that Asahi Optical used this logo before WWII, would that make any sense? Was electromicrography even advanced enough then to see silver grains? If it's the case that Asahi knew nothing about the shape of silver grains, does it mean that I've opened a trail of dubious associations that will bring me right to the True Nature of Jesus as he was a photographer in Judea, known for its bitumen?
    Using film since before it was hip.


    "One of the most singular characters of the hyposulphites, is the property their solutions possess of dissolving muriate of silver and retaining it in considerable quantity in permanent solution" — Sir John Frederick William Herschel, "On the Hyposulphurous Acid and its Compounds." The Edinburgh Philosophical Journal, Vol. 1 (8 Jan. 1819): 8-29. p. 11

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  2. #2

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    Was electromicrography even advanced enough then to see silver grains?

    The first practicle electron microscope was built at the Univerity of Toronto in 1938 so it would be doubtful that these are silver grains. So - maybe you have opened a can of worms

    Regards
    Gord

  3. #3
    Michel Hardy-Vallée's Avatar
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    Quote Originally Posted by gordrob View Post
    So - maybe you have opened a can of worms
    Mmmmm.... Canned worms!
    Using film since before it was hip.


    "One of the most singular characters of the hyposulphites, is the property their solutions possess of dissolving muriate of silver and retaining it in considerable quantity in permanent solution" — Sir John Frederick William Herschel, "On the Hyposulphurous Acid and its Compounds." The Edinburgh Philosophical Journal, Vol. 1 (8 Jan. 1819): 8-29. p. 11

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  4. #4

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    Quote Originally Posted by mhv View Post
    Mmmmm.... Canned worms!
    with or without poutine and a Molsons



 

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