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Null (physics)

In physics, a null is a point in a field where the field quantity is zero as the result of two or more opposing quantities completely cancelling each other. The field may be scalar, vector or tensor in nature. Common situations where nulls arise are in the polar patterns of microphones and antennae, and nulls caused by reflections of waves.

Measurement, Standing waves & Antennae

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Standing waves

Standing wavesAntiphaseVibration modeTransmission linesResistive
10 related topics

Antennae

DipoleYagi
2 related topics

Microphones

Cardioid
1 related topics

Measuring bridges

Wheatstone bridge
1 related topics

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Overview

Microphones

Antennae

Standing waves

Measuring bridges

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Null (physics)

Nodes28
Edges27
Triples0
Avg. degree1.93
Density0.071429
Components1

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Important terminology

nulls waves microphones null instrument polar standing transmission bridge antennae field direction tube line measure used measurement voltage point zero

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SubjectPredicateObjectConfidenceSrc

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