We may notice that ethyl oxalosuccinonitrile is the first case of a fluorescent aliphatic compound.
Fluorescens and a whole group of fluorescent bacteria.
Clear amber is found beside the Buzeu and its affluents, with brown and grey clouded amber, and a blue fluorescent variety, of considerable value.
The fluorescent bands in this case appear to shift rapidly when the period of the incident vibration is altered, though the change may be small.
The acid solution of sulphate of quinine is fluorescent, especially when dilute; and it is laevo-rotatory.
The bark of the horse-chestnut contains a greenish oil, resin, a yellow body, a tannin, C26 H 24012, existing likewise in the seeds and various parts of the tree, and decomposable into phloroglucin and aesciglyoxalic acid, C 7 H 6 O 3, also aesculetin hydrate, and the crystalline fluorescent compound aesculin, of the formulaC21H24013 (Rochleder and Schwarz), with which occurs a similar substance fraxin, the paviin of Sir G.
Fluorescent lighting increases the body's production of saliva, which helps prevent cavities.
The oxide is a black or brown powder according as it is prepared from the exalate or sulphate, and when pure it is non-fluorescent, but mixed with gadolinia or alumina it possesses this property.
Showed that the vibrating system of the fluorescent light seems identical with that observed by absorption in the fluted band spectrum, Wood excited the fluorescence by homogeneous radiation and discovered some remarkable facts.
The residues from petroleum distillation have been shown to contain very dense solids and liquids of high specific gravity, having a large proportion of carbon and possessed of remarkable fluorescent properties.
This theory explains the fluorescence of anthranilic acid (o-aminobenzoic acid), by regarding the aniline residue as the luminophore, and the carboxyl group as the fluorogen, since, apparently, the introduction of the latter into the non-fluorescent aniline molecule involves the production of a fluorescent substance.