As a significant May heat wave pushes temperatures into the 90s — and beyond 100 degrees in some parts of the Northeast — many are looking for refuge from the heat. When it comes to choosing the air ...
Ultrasonic levitation is by now a familiar trick: one or more ultrasonic transducers create a standing wave, and small objects can be held in the nodes of this standing wave. With a sufficiently large ...
Traveling in cold weather conditions can be life threatening. The information provided here is designed for educational use only and is not a substitute for specific training or experience. Princeton ...
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