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?
* 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-...