coruscation

kimaltelu, säihke

kimallus A sudden display of brilliance; a flashing of light, a sparkle.
1837 (w), (w)

In the dusky galleries, duskier with unwashed heads, is a strange 'coruscation,'—of impromptu billhooks.

All of these things - the rubbed amber, the magnets, the crystal radio, the clock dials with their tireless coruscations - gave me a sense of invisible rays and forces, a sense that beneath the familiar, visible world of colors and appearances there lay a dark, hidden world of mysterious laws and phenomena.