Why Do Mirrors Flip Left & Right (but not up & down)?
Why Do Mirrors Flip Left & Right (but not up & down)? with tags physics, minutephysics, science
Go to https://curiositystream.com/minutephysics to check out MinuteBody, and for a free month of CuriosityStream PLUS Nebula! Support MinutePhysics on Patreon! http://www.patreon.com/minutephysicsLink to Patreon Supporters: http://www.minutephysics.com/supporters/This video is about why words flip left & right (aka horizontally) in a mirror but not up & down (aka vertically). The answer has to do with specular reflection, mirrors being like windows into another world (alternate universes, just with in and out flipped!), and transparency of the things we write on.REFERENCESSpecular Reflectionhttps://en.wikipedia.org/wiki/Specular_reflectionPhysicsGirl video about mirrorshttps://www.youtube.com/watch?v=vBpxhfBlVLUFermats principlehttp://electron6.phys.utk.edu/optics421/modules/m1/Fermat's%20principle.htmThomas-Fermi screeninghttps://en.wikipedia.org/wiki/Thomas%E2%80%93Fermi_screeningMinutePhysics is on twitter - @minutephysicsAnd facebook - http://facebook.com/minutephysicsAnd Google+ (does anyone use this any more?) - http://bit.ly/qzEwc6Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!Created by Henry Reich
