Service technicians need to completely evacuate a refrigeration system any time they open the system to the atmosphere. Vacuum pumps and micron gauges are the tools you need to use for this. Are yours ...

Dr. Wei Yang talks about the micro vacuum pump he developed at Honeywell. It has hundreds of thousands of tiny turbine blades, each only a few microns in size, and over two hundred stages built on the ...

There is little evidence that penis stretching or “jelqing” works to lengthen the penis. This also applies to penis lengthening devices, such as vacuum pumps. The average size of an erect penis is 5.1 ...

Download the MP3 audio version of this story here, or sign up for The Explainer’s free daily podcast on iTunes. Testimony has ended in the trial of Donald Thompson, the former judge accused of using a ...