Yahoo Web Search

Search results

    • Photochromism of o-Nitrotoluenes - Nature

      Nature· 12 hours ago

      THE crystals of 2-(2′,4′-dinitrobenzyl)-pyridine (I), which are colourless when kept in the dark, turn blue when exposed to light1. Hardwick, Mosher and ...

    • Existence of Three Alum Structures - Nature

      Nature· 10 hours ago

      THE crystals which comprise the alum series have generally been considered to be isomorphous on account of the similarity of their chemical formulæ and ...