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digital counter
Science; General science
A device which, in its simplest form, provides an output that corresponds to the number of pulses applied to its input.
limiter circuit
Science; General science
A device whose purpose is to ensure that the amplitude of a sensed variable (referred to as a signal) is constrained or limited to lie within prescribed maximum and minimum ...
mixer
Science; General science
A device with two or more signal inputs and one common output. The two primary classes are linear (additive) and nonlinear (multiplicative) mixers. Linear mixers are used to add ...
crystal counter
Science; General science
A device, more correctly described as a crystal detector, that detects ionizing radiations of all types and is adaptable to measuring neutrons. The sensitive element is a single ...
echocardiography
Science; General science
A diagnostic procedure that uses ultrasound at a frequency of 2.5–10 MHz to provide an image of the heart. It is based on the principle that the interface between tissues of ...
food web
Science; General science
A diagram depicting those organisms that eat other organisms in the same ecosystem. In some cases, the organisms may already be dead. Thus, a food web is a network of energy flows ...
wind rose
Science; General science
A diagram in which statistical information concerning the direction and speed of the wind at a particular location may be conveniently summarized. In the standard wind rose a ...
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- Acoustics (1199)
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- General science (120567)