Phenanthrene appears as a white powder having blue fluorescence.
It crystallizes in large colorless plates which possess a blue fluorescence.
In Fig. 6a, b the resulting blue fluorescence can be observed.
Unseen below was an area of some 2 square, km which was completely glazed over and giving off a weak steel blue fluorescence.
Grimpel produced a pea-sized lump of material which appeared to be surrounded by a cold blue fluorescence.
The paper will give a strong blue fluorescence if not filtered.
It is thought to attract prey by means of blue fluorescence.
The resulting material has a brilliant blue white fluorescence under short wave ultraviolet light.
Divalent europium is the source of the blue fluorescence, when seen in the mineral fluorite.
A faint trail of blue fluorescence glimmered in her wake.
