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Why do mirrors reverse left and right but not up and down?

  1. Apr 17, 2007 #1
    why do mirrors reverse left and right but not up and down?

    thank you very much.
  2. jcsd
  3. Apr 17, 2007 #2
    Mirrors do not reverse up-down nor left-right. Your (up) head is always up and your right hand is always at right.

    What a mirror reverse is front-back. If you are heading North, your image is heading south.
  4. Apr 17, 2007 #3
    A mirror can reflect 'upside down'---it just depends on the angle of reflection.
  5. Apr 17, 2007 #4


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    Staff: Mentor

  6. Apr 17, 2007 #5


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    I'm wondering who the hell Trimotio and Fineas are. Like Alice and Bob, or are they random names, or what?
  7. Apr 17, 2007 #6
    I thought they were the 1/2 wave virtual non-local representative ghost MWI counter-equivalents of Bob and Alice.
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