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&#x27;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:<p><a href="https:&#x2F;&#x2F;www.fourmilab.ch&#x2F;gravitation&#x2F;foobar&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.fourmilab.ch&#x2F;gravitation&#x2F;foobar&#x2F;</a><p>&quot;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].&quot;