Xiang Zhang

Aug. 15, 2008

Towards a Super Lens -- Or Invisibility?

Ira talks with one of the researchers behind a material that can make light bend in unusual ways -- potentially leading to more powerful optics, or even a cloak of invisibility.

diffraction, refraction, optics, metamaterial

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Michael Pollan Talks Plants and Food

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Mystery Box

Oliver Sacks: Hallucinations

In his latest book, neurologist Oliver Sacks explores the strange world of hallucinations, and documents his own experiments with psychedelic drugs.

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