Final answer:
Intensity in communication refers to the power per unit area transferred by a wave, such as the loudness of sound or brightness of light, typically measured in watts per square meter or decibels.
Step-by-step explanation:
Understanding Intensity in Communication
Intensity in communication relates to the concept of the energy transmitted by a wave, which is directly tied to the amplitude of that wave. In terms of its application in physics to waves such as sound and light, intensity is defined as the power per unit area carried by a wave. This power represents the rate at which energy is transferred by the wave. The equation form for intensity I is provided by I = P/A, where P is the power carried through area A.
The unit of measurement for intensity is watts per square meter (W/m²), but other intensity-related units, such as the decibel (symbol: dB), are also in common use. For instance, sound levels are often measured in decibels; a 90 decibel level correlates with an intensity of 10⁻³ W/m², which indicates a significant loudness, given how decibels scale logarithmically.