Related topics: light

Researchers shrink camera to the size of a salt grain

Micro-sized cameras have great potential to spot problems in the human body and enable sensing for super-small robots, but past approaches captured fuzzy, distorted images with limited fields of view.

Why is the North American fall so red compared with Europe?

Each fall, the leaves of almost half of North America's species of trees and shrubs turn red. But why is bewitching autumn foliage—to borrow from Mark Twain—so common in New England, but not in Europe?

Trapping spins with sound

The captured electrons typically absorb light in the visible spectrum, so that a transparent material becomes colored under the presence of such centers, for instance in diamond. "Color centers are often coming along with ...

Why some of Darwin's finch nestlings have yellow beaks

Carotenoids are the underlying pigment for much of the enormous variety of color found across birds and form the basis for the colors red, yellow and orange. In a study published in Current Biology, researchers from Uppsala ...

Colorblind fish reveal how vision evolved

After decades of studying color vision in mice, new research in zebrafish has allowed experts at the University of Tokyo to uncover how some animals regulate their ability to see blue light. The results, published in Science ...

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