A barometer also monitors variations in atmospheric pressure. As air becomes thinner, the density of air decreases, and so too does the pressure of air. Many different factors affect the density ...

I know which I’d prefer to try and catch! And that’s because water and air have different densities. You can think of density as how heavy something is for its size.And you can calculate it by ...

It's an example of Schlieren photography, a technique that uses refraction to visualize the shifting density of air as an object moves through it. You can see the XB-1 pushing its way through the ...