What's the difference between warm air and cool air? In fact, what does “temperature” even mean? It's stranger than you think. At a basic level, if you increase the temperature of air, you increase ...

Pump-displacement volume is typically determined by gear size. The oil pumps below (left to right) represent two different displacements, as noted by the case size. For high-performance work, a steel ...

Centrifugal pumps are the most common pumps in a process plant. Despite their pivotal role in operations, however, they are often the plant's least understood and most inefficiently operated equipment ...