Recent content by bobthemoose

Yeah concave means it dips down. Check this out to observe it: http://demonstrations.wolfram.com/NewtonsRotatingBucketExperiment/

The water in the center of a spinning bucket does not rise. What page do you read that on? When a bucket spins, the water gains speed and goes against the edge of the bucket, the edge of the bucket pushes back. As that happens, the water vacates the center and bunches up on the edge. The...