Cathy Is Enjoying the Symphony

question 105

True/False

Cathy is enjoying the symphony.She notices that the notes played by the string instruments seem to stand out as a group from the sounds of the other instruments,illustrating the principle of proximity.

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Definitions:

Light Beam

A stream of light particles (photons) traveling in the same direction, used in various applications including communication and measurement.

Sensor

A device that detects or measures a physical property (such as temperature, light, pressure) and records, indicates, or otherwise responds to it.

Photoelectric Sensors

Devices that detect objects, changes in light intensity, or proximity by emitting and receiving light.