Nodules on CT scan (3 replies): I had a CT scan ran twice on my lungs. It shows multipl... [more]. Ground glass opacities. Hi, Just got the CT scan result back. A 7mmx4mm gro... [more]. Continue discussion. This discussion is closed.
Isobars are lines of constant or equal pressure on a weather map. They can be used to find areas of low or high pressure over a broad area (like the U.S.), and they can tell us how intense the system may be.
A weather front is a boundary separating two masses of air of different densities, and is the principal cause of meteorological phenomena. In surface weather analyses, fronts are depicted using various colored triangles and half-circles, depending on the type of front.