e of a group of lines which appear in the solar spectrum, when the sun is near the horizon), and one faint line in the green. On one occasion there was visible one additional line in the red.

p. 143, misrepresents, of course unintentionally, certain remarks of mine upon “dark” spectrum lines. I have not, and never have had, the slightest doubt that the dark lines of the solar ...

In the study Modelling and analysis of the influence of solar spectrum on the efficiency of photovoltaic modules, published in Energy Reports, the researchers proposed a method to obtain the ...