About the Element
Thorium is a naturally-occurring, slightly radioactive metal. It has the symbol Th and atomic number 90.
Found on L¿v¿y Island, Norway and later identified by the Swedish chemist Jšns Jakob Berzelius in 1828. Berzelius analyzed it and named it after Thor, the Norse god of thunder. The metal had virtually no uses until the invention of the gas mantle in 1885. It is found in small amounts in most rocks and soils, where it is about three times more abundant than uranium.
When heated in air, thorium metal turnings ignite and burn brilliantly with a white light. Because of these properties, thorium has found applications in light bulb elements, lantern mantles, arc-light lamps, welding electrodes and heat-resistant ceramics. Glass containing thorium oxide has a high refractive index and dispersion and is used in high quality lenses for cameras and scientific instruments.
About the Print
The print was created by hand pulling the image from two 6”x6” linocut blocks, using Rives lightweight paper and Daniel Smith oil inks
About the Printmaker
by Ellen Brooks
see also: Aluminum
Atomic number: 90
Atomic weight: 232.038