At age five, Einstein was mesmerized by a pocket compass. The invisible force directing the needle convinced him that there was something deeply hidden behind things.
Showed that mass and energy are interchangeable, predicting the immense power of nuclear reactions. 🌌 Bending the Cosmos: General Relativity Einstein- His Life and Universe by Walter Isaacson.pdf
Argued that the laws of physics are the same for all non-accelerating observers and that the speed of light in a vacuum is constant, regardless of the observer's motion. At age five, Einstein was mesmerized by a pocket compass