The Black Hole in Your Kitchen Sink, Part 3 -Gravitational Lensing
Gravitational lensing is one hallmark of Einstein’s version of gravity know as relativity. You can do your own gravitational lensing experiments in the water flowing in your kitchen sink.
The Black Hole in Your Kitchen Sink, Part 2 -Experiments
Tinker with black holes, whites holes, and extreme gravity in your kitchen sink.