What are some of Niels Bohr's inventions?

I don't understand your question. Niels Bohr was not an inventor, he was a scientist. To him we owe the Bohr model of the atom and a good fraction of quantum mechanics. If you want to know about Niels Bohr, you could start by reading the Wikipedia page about him. read more

Niels Bohr's greatest discovery was the atomic model. Bohr's model shows the atom as a positively charged nucleus surrounded by orbiting electrons. Bohr also discovered that electrons travel around the nucleus in distinct, concentric orbits. read more

Niels Bohr completely transformed our view of the atom and of the world. Realizing that classical physics fails catastrophically when things are atom-sized or smaller, he remodeled the atom so electrons occupied ‘allowed’ orbits around the nucleus while all other orbits were forbidden. In doing so he founded quantum mechanics. read more

Niels Bohr was born on October 7, 1885, in Copenhagen, Denmark, to mother Ellen Adler, who was part of a successful Jewish banking clan, and father Christian Bohr, a celebrated physiology academic. The young Bohr eventually attended Copenhagen University, where he received his master's and doctorate in physics by 1911. read more