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
thermometer
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Yes, a Stevenson screen can be placed on a hard surface, but it is important to ensure that the screen is elevated and well-ventilated to avoid heat from the ground affecting the temperature readings. Ideally, it should be situated on a grassy or natural surface to minimize heat absorption and provide more accurate measurements. Proper placement is crucial for maintaining the integrity of the data collected.
allows air to reach the thermometer so that it s temprature can be measured
protect thermometer from direct sunlight
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
In observataries,the thermometers are kept in a wooden box with good ventilation and air movement.This box is called stevenson's screen
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
thermometer
to support
To allow the air to circulate
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the stvenson screen has a air vent on the top of it so that air can get out