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It only absorbs over a narrow, tunable, frequency range. That won't make it black. Personally I was disappointed when I saw they could take a picture of it.
by jws 18y ago
It only absorbs over a narrow, tunable, frequency range. That won't make it black. Personally I was disappointed when I saw they could take a picture of it.
- hugh 18y agoOh, I had assumed that was an electron micrograph. But you're right, now I come to read the article again it only works over a narrow frequency range.