Why Does Gravity Rule? By Frank Close — $21.99 on Amazon If you enjoyed this extract, the rest of the book builds on this brief history of magnetism and delves ever deeper into the subatomic ...

Gravity, electrical charge, and magnetism are three examples of central forces. Centers of electromagnetic energy radiating inward or outward are known as poles. Newton used a mathematical ...

If gravity arises from entropy, scientists could unite Einstein's general relativity with the quantum realm while shedding light on dark matter and dark energy. A new recipe for gravity could help ...