Page 57 - Shellie Suzana Binti Saad
P. 57
EXERCISE 5
Humidity sensors detect the relative humidity of the
immediate environments in which they are placed.
They measure both the moisture and temperature in the air
and express relative humidity as a percentage of the ratio of
moisture in the air to the maximum amount that can be held
in the air at the current temperature.
When the air becomes hotter, it holds more moisture, so the
relative humidity changes with the temperature.
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