Why is it so difficult to show the Sun, Earth and Moon in a diagram?
Is this really true? Yes. Look, I can prove it. Here is a graph of the trajectories of the Earth and the Moon as they orbit the Sun over the…
How to Design a Real Life Hot Wheels Loop
The minimum height I get is 2.5R. So if the loop is 4 meters high (with a radius of 2 meters), the car would have to start 5 meters above…