EVERYONE who is concerned in the teaching of elementary zoology knows the great difficulty of so controlling the movements of Paramœcium that students can distinguish the essential features of its ...

Designers of motion control applications are under pressure to optimize performance and efficiency while keeping component count and space to an absolute minimum. The ideal situation is sensorless ...

Early radio receivers and record players nearly always had a knob marked “tone,” which was usually a crude low-pass filter with some form of severity adjustment. At best, these controls could ...