The Bohr model of the atom was introduced by Niels Bohr in 1913. You're probably familiar with the simplified Bohr model from high school, which is used to introduce students to quantum mechanics. It depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus, which is also reflected in our intepretation for this necklace.

This necklace is laser cut from one piece of 3mm acrylic and measures about 2.5cm wide x 2.7cm tall.