Patent ID: 9689543
Date: 2017-06-27
CPC Classifications: F21S,F21W

Claim:
1. A novelty lamp comprising: a container which is transparent or translucent in at least a portion thereof; a first substance in the container; a second substance in the container; a light source arranged to emit light into the container; a heat source; and a magnet, wherein: (a) the first substance is a liquid, (b) the second substance is a ferro fluid which is immiscible with the first substance, has a higher relative density than said first substance at 20° C. and has a lower relative density than said first substance at a higher temperature which is higher than 20° C.; (c) the heat source is arranged to heat the first substance and the second substance in the container to the higher temperature such that the second substance forms globules which rise in the first substance toward a top surface of the container, cool, become denser and drop back down toward a bottom surface of the container; and (d) the magnet is arranged to alter a shape and a flow of the globules.