Glass saucer or coaster e.g. for cups and tankards, uses at least one CD- or DVD-disc with configured silver or aluminum coating forming coil-shaped spiral

摘要

A glass coaster or saucer has at least one electromagnetic coil for generating an electromagnetic field which penetrates into the beverage. More specifically the coaster or saucer consists of at least one CD- or DVD-disc, the silver or aluminum coating of which is shaped or scratched in such a manner so as to form a coil-shaped spiral.