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Thread: 3D

  1. #11
    soforene's Avatar
    soforene is offline The Troll formerly known as Herbert Von Poople-Futtocks
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    I just read an interesting article in The Guardian about (the "Back Story" of) Avatar.
    CUH !! The things you learn from Newspapers these days ...............

    http://www.guardian.co.uk/commentisf...ound-important

    (American viewers of a sensitive nature may wish to avoid that link).

  2. #12
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    Ouch...

    That doesn't make pleasant reading at all

    Jem
    Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.... Douglas Adams 1952 - 2001

  3. #13
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    No not nice, but while not disagrreeing with the history particularly, one should remember that the tie to the movie is being made by a writer for a left wing paper (albiet one of the better ones). It is entirely possible that the producers thought they were making "Fern Gully" in space, and nothing more.

    I suspect that that story says more about the nature of journalism (both left and right biased) then it does about a rather thin movie plot.

    Regards, Dan.

  4. #14
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    avatar win!!!! 15 stupid characters

  5. #15
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    Quote Originally Posted by mixedgas View Post
    QM 32 had a dedicated Z channel. Sadly Qm2000 does not.

    Steve
    Are you sure about that?

    http://www.youtube.com/watch?v=urMKryZqNs4

    Bottom scope is X/Y, top scope is Z/Y.

  6. #16
    mixedgas's Avatar
    mixedgas is offline Creaky Old Award Winning Bastard Technologist
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    Quote Originally Posted by DZ View Post
    Are you sure about that?

    http://www.youtube.com/watch?v=urMKryZqNs4

    Bottom scope is X/Y, top scope is Z/Y.

    Corrected, I am.

    Now how the heck to process it to two scan heads or one scan head and a EO acting as a waveplate. I have a couple of red/blue EOs. It only needs about 160V to drive the EO as a wave plate.

    Steve
    Qui habet Christos, habet Vitam!
    I should have rented the space under my name for advertising.
    When I still could have...

  7. #17
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    What about a 2nd laser on its side, is that no solution?

  8. #18
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    Quote Originally Posted by mixedgas View Post
    Corrected, I am.
    Now how the heck to process it to two scan heads or one scan head and a EO acting as a waveplate. I have a couple of red/blue EOs. It only needs about 160V to drive the EO as a wave plate.
    Steve
    If k is small then sin (k) ~=k....

    Generate X1 as X+c(k-z) and X2 as X-c(k-z) where k is a constant and increasing z means further away. k is set so that k-z = 0 at infinity, and c is set so that at closest point, the inter ocular distance is correct.

    Looks like about two opamps or so to me (possibly plus an analogue switch if doing the EO cell thing).

    What are these EO cells that work at such a low voltage?
    I want to play too!

    Regards, Dan.
    Last edited by DMills; 01-14-2010 at 18:10. Reason: Math typo

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