Sentence Examples with the word triplet

Paschen in 1896 identified an unmistakable oxygen triplet in the infra-red, which is shown terrestrially only in the vacuum tube, where the spectrum is very different from that of atmospheric absorptions.

The central fruits of each triplet form two regular rows, but the lateral spikelets form not four straight single rows as in (ii.), but two regular double rows, the whole ear appearing irregularly four-rowed.

The same three elements being again determined from a second triplet of eclipses at as remote an epoch as possible, the difference in the 1 A.