[Editor’s note: When we last visited with lead installer John and his helper Charlie (The NEWS, March 5, 2007), they had just learned the hard way that there’s a lot more to sealing ducts than just ...

A decade-old static pressure diagram sent the wrong message, and it took a sharp-eyed contractor to catch it. Here’s a ...

Zhong Lin Wang of the Georgia Institute of Technology has worked for years to develop devices based on the triboelectric effect—the phenomenon behind static electricity. The effect happens when one ...

There are essentially four different types of pressure measurement transmitters. Absolute pressure transmitters measure against a vacuum, meaning that if no pressure is applied, the reading would ...