Term Categories: Glossary

A process for increasing the amplitude of a trace with time, thus making all events on the trace appear to be of approximately the same amplitude. Various window lengths are used; the appearance of the data may be greatly affected by the window used in the calculation.

The reduction in the level of a quantity, such as the intensity of a wave or radiation.

Deviation from uniformity in a physical property.

1. The positive terminal or the collector of electrons in an electrical system (i.e. the positive terminal of a battery)
2. The electrode at which oxidation or corrosion occurs. It is the opposite of cathode.

Having a physical property which varies with direction.

Data represented as a continuous record of physical variables instead of discrete values, as in digital recording

1. The maximum absolute value obtained by the disturbance of a wave or any quantity that varies periodically.
2. The vertical height of a received signal on an A-scan. It is measured from peak to peak for an RF presentation or from base to peak for a video presentation.

Surrounding or background level. Usually used in relation to temperature, light, or sound.

Electric current that reverses direction periodically (usually many times per second).

A sound wave transmitted through the material by elastic deformation