Greg Tomb rolls glass in colored chips. Photo by Ana Williams-Bergen. Gregory Tomb has been fascinated with glass since he was a child. He started glassblowing in college and fell in love with i

The driver/engineer (D/E) position is arguably one of the most, if not the most, important positions on the fireground. This position requires a firm grasp of mechanical aptitude; maturity; trus

The liquid line in a refrigeration system begins at the outlet of the receiver and includes the filter drier, sight glass, metering device, and any other components located between the receiver

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Lasers normally use mirrors to create laser light, but a new kind uses clumps of moving particles. The result is a laser that is more programm