Studies show there are some 1.5 to 2 million U.S. workers - and millions more worldwide - who are regularly exposed to Hand-Arm Vibration (HAV) during their work. Regular HAV exposure has been shown ...

This classical picture, however, is inconsistent with the experiments. Instead, both light and vibration should be described as particles, or quanta: light energy is quantized into discrete photons ...

An especially counter-intuitive feature of quantum mechanics is that a single event can exist in a state of superposition - happening both here and there, or both today and tomorrow. Such ...

Photoelectric sensors and light curtain sensors are among the most commonly used sensing devices in factories. Photoelectric ...