Another awe-inspiring experiment that can be done in a basement or high school lab is to show that gravity really does exist between everyday ordinary objects.

Another awe-inspiring experiment that can be done in a basement or high school lab is to show that gravity really does exist between everyday ordinary objects. You'd think that any demonstration of gravity has to involve the Earth or Earth-size objects. Showing that two bowling balls attract seems impossibly difficult. But it can be done: https://www.fourmilab.ch/gravitation/foobar/ https://www.fourmilab.ch/gravitation/foobar/ "The [experiment above] demonstrates universal gravitation with an apparatus which could have been conceived by Archimedes and built from materials he could readily obtain [during the time Archimedes lived 2200 years ago]."