Why Do Mirrors Flip Left & Right (but not up & down)?
889 327
6.5
MinutePhysics5.83 млн
Следующее
20.12.19 – 621 8633:09Популярные
18.08.22 – 750 9316:26
16.10.11 – 4 372 7541:04Опубликовано 6 декабря 2019, 14:00
Go to curiositystream.com/minutephys... to check out MinuteBody, and for a free month of CuriosityStream PLUS Nebula!
Support MinutePhysics on Patreon! patreon.com/minutephysics
Link to Patreon Supporters: 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
en.wikipedia.org/wiki/Specular...
PhysicsGirl video about mirrors
youtube.com/watch?v=vBpxhfBlVL...
Fermat’s principle
electron6.phys.utk.edu/optics4...
Thomas-Fermi screening
en.wikipedia.org/wiki/Thomas%E...
MinutePhysics is on twitter - @minutephysics
And facebook - facebook.com/minutephysics
And Google+ (does anyone use this any more?) - 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
Support MinutePhysics on Patreon! patreon.com/minutephysics
Link to Patreon Supporters: 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
en.wikipedia.org/wiki/Specular...
PhysicsGirl video about mirrors
youtube.com/watch?v=vBpxhfBlVL...
Fermat’s principle
electron6.phys.utk.edu/optics4...
Thomas-Fermi screening
en.wikipedia.org/wiki/Thomas%E...
MinutePhysics is on twitter - @minutephysics
And facebook - facebook.com/minutephysics
And Google+ (does anyone use this any more?) - 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
Свежие видео
10 дней – 1 043 0288:44
10 дней – 3261:00:05
16 дней – 2 9172:51
18 дней – 1 2500:07
19 дней – 1 443 3430:29
23 дня – 9 26220:40Случайные видео
245 дней – 2 5704:00
08.12.23 – 2 9540:20
18.11.23 – 19 6531:01
02.09.23 – 48 9060:30
11.07.23 – 1 6320:41
28.12.21 – 1 242 12611:44
1 день – 2632:14
3 дня – 6080:24
3 дня – 81:09:33
4 дня – 8233:59
10 дней – 4192:44
11 дней – 3 1014:57
2 дня – 37 4580:27
10 дней – 4944:29