To Double the Perceived Brightness of a Light, You Need

question 27

Multiple Choice

To double the perceived brightness of a light, you need to multiply the physical intensity of the light by about 9. This is an example of response

• A) compression.
• B) expansion.
• C) linearity.
• D) inversion.

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Definitions:

Atmospheric Layers

The divisions of Earth's atmosphere based on temperature gradients, including the troposphere, stratosphere, mesosphere, thermosphere, and exosphere.

Troposphere

The lowest layer of the Earth's atmosphere, where most weather phenomena occur.

Stratosphere

The layer of the Earth's atmosphere located above the troposphere and below the mesosphere, characterized by a slight temperature increase with altitude and the presence of the ozone layer.

Unhealthy Air

Air that is contaminated with pollutants at levels which are harmful to human health and the environment.