30 million years ahead - how the butterfly beat technology to it

Butterflies have evolved a unique mechanism to create a dazzling display of colour which puts physicists in the shade. Modern light emitting devices have traditionally been inefficient because most of the light created can't escape, but now in a paper published in Science, University of Exeter scientists have discovered the butterfly has been doing what physics couldn't, for more than 30 million years.

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<p><a href="http://www.physorg.com/news8333.html">30 million years ahead - how the butterfly beat technology to it</a></p> <p> Butterflies have evolved a unique mechanism to create a dazzling display of colour which puts physicists in the shade. Modern light emitting devices have traditionally been inefficient because most of the light created can't escape, but now in a paper published in <i>Science</i>, University of Exeter scientists have discovered the butterfly has been doing what physics couldn't, for more than 30 million years.</p>