4 ms·
A quantum effect you can observe with the naked eye
http://www.youtube.com/watch?v=-Yh-U8Ro-P0
I find it amazing.
You can repeat the experiment using lenses from polarized sun glasses with sun or computer monitor light.
Does anybody know of other examples?
- DavidPlumpton 13y agoDouble slit experiment with a key ring laser. Liquid Helium.
- rom16384 13y agoWell one could argue the world is quantum, so that would give you lots of examples! But more to the point: * The colors you can see on a puddle of water with a bit of oil on it is due to interference [1] * Certain butterflies wings colors are not due to pigments, but to microscopic structures that cause interference. * One very striking example is superconductivity [2], where a material can conduct electricity without resistance, and expels magnetic fields, leading to magnetic levitation. * Diamagnetism: Since water is slightly diamagnetic, that is, it creates a small magnetic field that oposes an external magnetic field applied to it, things with lots of water can be levitated in a strong enough magnetic field. [3] [1] http://www.kentshillphysics.net/light-optics/thin-films-and-interference/ http://www.kentshillphysics.net/light-optics/thin-films-and-... [2] https://www.youtube.com/watch?v=4HHJv8lPERQ https://www.youtube.com/watch?v=4HHJv8lPERQ [3] http://www.ru.nl/hfml/research/levitation/diamagnetic/ http://www.ru.nl/hfml/research/levitation/diamagnetic/
- db48x 13y agoFluorescent lightbulbs, you may have seen one.
- andrewcooke 13y agowhy can't this (three polarizers) be explained classically? googling turns up this explanation, for example http://van.physics.illinois.edu/qa/listing.php?id=16544 http://van.physics.illinois.edu/qa/listing.php?id=16544 or this one http://www.lhup.edu/~dsimanek/14/polaroid.htm http://www.lhup.edu/~dsimanek/14/polaroid.htm