Category : Hobbies & Science : Society & Culture & Entertainment

Properties of Pure Gold

Hobbies & Science
Gold is a chemical element that presents itself as a precious metal. For centuries, gold has been sought after across the world and has come to represent wealth, prosperity and beauty. The history of gold is almost as impressive as the metal itself. Ancient treasures and coins have been made of gol

How to Reduce Vanadium

Hobbies & Science
Vanadium is a transition metal used in the production of specialized steels. Vanadium occurs in nature as the mineral vanadinite. Reducing vanadium, or increasing its number of electrons, occurs by a chemical reaction. Vanadium starts out with a positive five charge, which can be reduced to a positi

Steps to Minting Coins

Hobbies & Science
Designing the CoinCoins begin as images and text that must be transferred to the two sides of a metal disk. Two detailed clay models record every aspect of each side of the future coin. These clay models can be up to four times the size of the finished coin. The large size is necessary to...

What Is a Toroid Coil?

Hobbies & Science
A solenoid is an electromagnet formed from a wire that carries current. Electromagnets have magnetic fields created from currents. The wire of a solenoid is often formed into a helical coil, and a piece of metal such as iron is often inserted inside. When a solenoid is bent into the shape of a circl