2 ms·
The black object will re-emit the light with a blackbody spectrum (dependent on the temperature).
by iwwr 16y ago
The black object will re-emit the light with a blackbody spectrum (dependent on the temperature).
- alok-g 16y agoThey claim their method results in 99.4% absorption (even though theoretical number is higher). This does not look too hard for visible range. (But maybe for other frequencies, I don't know.) A typical HDTV with a contrast ratio better than 167:1 is already doing this using liquid crystal (uses polarization rather than a black object).