The louvered sides allow outside air to flow around the thermometers. ... Stevenson screens are always installed so that the door opens facing north, to keep the sun from shining directly on the thermometers and affecting the readings.
A Stevenson screen faces north to ensure that the temperature readings it provides are not influenced by direct sunlight. By having the door of the screen facing north, it minimizes the impact of solar radiation on the thermometers inside, allowing for more accurate and consistent measurements of air temperature and humidity. This orientation helps standardize meteorological observations across different locations.
he invented the instrument
In the 1860s. I think. By Thomas Stevenson.
In the 1860s. I think. By Thomas Stevenson.
to prevent heat radiation and damage by people or animals
Stevenson screens are always installed so that the door opens facing north, to keep the sun from shining directly on the thermometers and affecting the readings
In observataries,the thermometers are kept in a wooden box with good ventilation and air movement.This box is called stevenson's screen
thermometer
to support
To allow the air to circulate
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