One Answer

  1. Since an absolutely black body absorbs absolutely all the electromagnetic radiation that falls on it, in all ranges, we will see a black” as if flat ” figure.

    As far as I know, in 2014, a technology was developed based on carbon nanotubes with a reflection coefficient of 0.035% in the visible range, with which 99.96% is absorbed. It looks like this. nnm.me

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