Home » Articles tagged ‘platinum

What country coined platinum money?

May 6, 2017 | Author: | Posted in Central Banking

In 1828 the Russian government began the coinage of platinum money. Platinum was produced in considerable quantities in the Ural Mountains in Russia and its general scarcity and great value were not at first appreciated. For many years the Russians considered the metal of such small value that peasants used pots and pans made of …

Comments Off on What country coined platinum money? Tags: , , , , ,

What is the lightest substance known?

March 11, 2017 | Author: | Posted in Science

The element hydrogen is the lightest substance known to science. Its specific gravity, compared to air, is 0.0695. Helium, with a specific gravity of 0.139, is the next lightest substance. Specific gravity is relative density, that is, the ratio of the weight of any volume of a substance to the weight of an equal volume …

Comments Off on What is the lightest substance known? Tags: , , , , , , , , ,