1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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


    User Avatar

    Staff: Mentor

    Last edited by a moderator: Apr 22, 2017
  6. Apr 17, 2007 #5


    User Avatar

    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.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook