[Wien] Very elemental questions...

[Chandrika]

  ----- Original Message ----- 
  From: zubaer 
  To: A Mailing list for WIEN2k users 
  Sent: Thursday, March 06, 2008 7:51 PM
  Subject: Re: [Wien] Very elemental questions...





  On Wed, Mar 5, 2008 at 10:47 PM, Chandrika <rcais at cal3.vsnl.net.in> wrote:

    The reflection of my nose and the middle of my body is at at the central
    plane (of symmetry) and is not displaced right or left in the mirror. So
    there cannot be an inversion. Lateral inversion
    is only to the left and right of the normal. I can look upside-down only if
    I am in front of a convex or concave mirror.

  Just to  note: in front of a convex or concave mirror your whole picture will be elongated or shortened on the mirror. It will not give you a upside-down image, I think.
  Sorry. Mirror should read lens.
  Chandrika


    Am I right Gerhard?
    Chandrika

    ----- Original Message -----
    From: "Gerhard Fecher" <fecher at uni-mainz.de>
    To: "A Mailing list for WIEN2k users" <wien at zeus.theochem.tuwien.ac.at>
    Sent: Wednesday, March 05, 2008 3:57 PM
    Subject: Re: [Wien] Very elemental questions...


    Seems I have to make the question more complicated.

    Do you have a mirror and a friend at hand ?
    Ok then go put your friend between you and the mirror such that he or she
    faces the mirror,
    try to answer my question again.

    You've got it ?


    have fun
    Gerhard



    ________________________________________

    Von: wien-bounces at zeus.theochem.tuwien.ac.at

    [wien-bounces at zeus.theochem.tuwien.ac.at] im Auftrag von Philippe Moreau
    [Philippe.Moreau at cnrs-imn.fr]
    Gesendet: Mittwoch, 5. März 2008 10:24
    An: A Mailing list for WIEN2k users
    Betreff: Re: [Wien] Very elemental questions...


    Jiri Bursik a écrit :
    > Dear Florent,
    > the question was not that simple: Gerhard didn't propose having BOTH
    > left<-->right exchanged AND up<-->down exchanged. You can really see
    > EITHER left<-->right exchange OR up<-->down exchange in the mirror. It's
    > the matter of taste. Man is mostly vertical standing in front of the
    > mirror, that's probably why he/she tends to prefer automatically think
    > about left<-->right exchange. (Or has it more to do with position of
    > eyes? Or has it more to do with fixed floor and easier rotation than
    > turning upside down?)
    >

    Hi,
    seems to me that it is a matter of definition. You say that your
    right/left hand are exchange because when you look at the image in th
    mirror the left hand is situated on the left of your virtual body. This
    hand being on the your right hand side in the real you...
    Now , for your head: if you define your head as the thing on the left
    hand side of your heart (when you look at your heart sitting on the
    middle of your chest). Then, in the mirror, your head is at your feet.
    Thank God for that...

    Philippe

    --
    Dr. Philippe MOREAU

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