Also, the 5f6 of 231PU is a blackbody cavity. Now, you put something into that cavity that is hot. And you will see a color. Photosynthesis is hot, is a burning. Photosynthesis is the reverse burning of hydrogen.
Photosynthesis is chlorophyll.
You see, I know chlorophyll is green and can look up its chemistry as well as anyone else. But I can increase this enquiry to the fact of the visible spectrum of light. Well , if we are the most advanced life, the blackbody cavity of 5f6 of 231Pu would select a bandwidth that is the most useful to intelligent life and still be in the range of the color of green photosynthesis. Perhaps this method would indicate several answers to several questions if viable. And if not, then our spectral vision relative to what the bandwidth of 5f6 is may indicate our stage of development compared to other life forms in the universe.