There are lots of great air pressure demonstrations around, but a leaky water bottle is one of the simplest. It looks impressive and costs almost nothing.

Before the age of science, it was clear ... the true nature and behavior of the air we breathe. 1618: Issac Beekman compares air to water, and the pressure water exerts at depth, and comes up ...

As winter temperatures plummet, low tire pressure warnings will start illuminating dashboards.This common occurrence is not just a distraction; it can negativel ...

And you'll want to know which direction it's coming from. A barometer shows changes in air pressure. High pressure indicates good weather, low pressure indicates possible storms. By consulting ...