Why Do Mirrors Flip Left & Right (but not up & down)?
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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.
REFERENCES
Specular Reflection
https://en.wikipedia.org/wiki/Specular_reflection
PhysicsGirl video about mirrors
https://www.youtube.com/watch?v=vBpxhfBlVLU
Fermat’s principle
http://electron6.phys.utk.edu/optics421/modules/m1/Fermat's%20principle.htm
Thomas-Fermi screening
https://en.wikipedia.org/wiki/Thomas%E2%80%93Fermi_screening
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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich
Видео Why Do Mirrors Flip Left & Right (but not up & down)? канала minutephysics
Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics
Link 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.
REFERENCES
Specular Reflection
https://en.wikipedia.org/wiki/Specular_reflection
PhysicsGirl video about mirrors
https://www.youtube.com/watch?v=vBpxhfBlVLU
Fermat’s principle
http://electron6.phys.utk.edu/optics421/modules/m1/Fermat's%20principle.htm
Thomas-Fermi screening
https://en.wikipedia.org/wiki/Thomas%E2%80%93Fermi_screening
MinutePhysics is on twitter - @minutephysics
And facebook - http://facebook.com/minutephysics
And Google+ (does anyone use this any more?) - http://bit.ly/qzEwc6
Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich
Видео Why Do Mirrors Flip Left & Right (but not up & down)? канала minutephysics
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