THE structure of the coronene molecule, C 24 H 12, is of particular interest in view of its peculiarly high symmetry (Fig. 1). With regard to electron distribution and bond-lengths, the structure ...

WE have been making a study of the crystal structure of d-tartaric acid by X-ray analysis. This is a classical substance which presents some little difficulty in complete analysis owing to its low ...

The Crystal Guardian is an optional boss in Hollow Knight, but defeating it and its "true form" rewards you with a precious Mask Shard. This guide covers how to find and defeat the Crystal Guardian, ...