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terry hallinan

08/22/18 4:28 PM

#39589 RE: WisePolicalEconomist #39586

Not of much value and sorry if already posted.

Sure of that are you, Wise?

Looks to me like the cutting edge that some of our highly praised competition are aiming for.

Photonic crystals

Photonic crystals are periodic optical structures that can control the flow of light. Multiple reflections from surfaces separated by a distance similar to the wavelength prevent an optical beam from propagating through the crystal. Photonic crystal devices can therefore force light around sharp bands or even trap it entirely.


https://www.nature.com/subjects/photonic-crystals

What am I missing?

Best, Terry