Why a thermometer is never kept in direct sunlight.
Answers
Answer:
The earth's surface has more time to heat up on summer days. Therefore, air temperatures are usually warmer. ... The uneven heating is caused by sunlight hitting the earth's surface at different angles. Direct sunlight hitting the earth's surface causes higher temperatures than indirect sunlight.
or
A normal thermometer can not be used to measure temperature of sun as both are very far away from each other. If the thermometer is kept in direct sun for a longer period of time the temperature of its sensor will increase due to direct heat radiation from sun falling on it
Explanation:
Thermometers also should not be exposed to direct sunlight. The bimetallic strip or "bulb" of a liquid-in-glass thermometer absorbs solar radiation more efficiently than surrounding air, so exposure to direct sunlight causes it to measure a temperature that's higher than the surrounding air.
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