Tag
#optics
Every article tagged “optics”.
2 articles
Physics
Grind up a peacock feather and the blue disappears. There was never any blue in it
Some of the most intense colours in nature contain no pigment at all. They are produced by structures the size of a wavelength of light — which means the colour is in the geometry, cannot fade, and can be engineered into paint, packaging and banknotes.
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Physics
How a laser actually works
A laser is not simply a very bright lamp. It produces light in which every wave marches in step, and that single property is what lets it cut steel, carry the internet and measure the distance to the Moon.
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