L’eau en masse très épaisse n’est ni transparente ni diathermane, mais, pénétrable aux rayons bleus, indigo, violets, elle est diactinique.
Water, in a very thick mass, is neither transparent nor diathermanous; but, being penetrable to the blue, indigo, and violet rays, it is diactinic.ParaCrawl Corpus ParaCrawl Corpus