Informal learning is the unofficial, unscheduled, impromptu way most of us learn to do our jobs. Informal learning is like riding a bicycle: the rider chooses the destination and the route. The cyclist can take a detour at a momentâs notice to admire the scenery or help a fellow rider.
The name mica is derived from the Latin micare, which means to glitter or also to shine. Mica is a naturally occurring group of silicate minerals that has a perfect basal cleavage, easily splits into thin luminae, and is most often translucent in appearance.
Glittering surfaces have been found to be used since prehistoric times in the arts and in cosmetics. The modern word âglitterâ comes from glitra in Old Norse through Middle English. However, as early as 30,000 years ago, mica flakes were used to give cave paintings a glittering appearance. Prehistoric humans are believed to have used cosmetics, made of powdered hematite, a sparkling mineral.