Let inspiration be your compass

Were you ever, when taking a bath, suddenly struck by the insight that the upward force on your body by the surrounding water is equal to the weight of the water displaced by your body? It’s a matter of balance between the displaced weight and the induced upward force. It inspired Archimedes to his law of up-thrust. Were you ever, when taking a nap, suddenly awaken by the fall of an apple on your head, and came to realize that you were hit by the force of gravity? The same gravity holds the moon into orbit, and, less distant, our airplanes. This was also a matter of balance, which inspired Newton to his famous laws of gravity. And did you ever look at a pocket compass and wondered what it was in the surrounding empty space that was moving the needle? Where do you go to when there is nothing surrounding you? This wonder inspired Einstein to his theories of relativity and gravitation.All these great men were inspired by Mother Nature to represent the real world by simple models. Their i...