Instruments which are used to measure temperature and Humidity should be kept inside "stevenson screen". Its a wooden box to shade from direct sunlight, Its painted white to reflect sunlight, It has vents to allow free flow of air. The stevenson screen should be located away from trees and buildings which could affect the temperature!
Weather instruments such as thermometers, hygrometers, and barometers are typically stored in a Stevenson screen. These instruments are used to measure temperature, humidity, and barometric pressure for meteorological observations.
Stevenson screens typically house instruments used in meteorology, such as thermometers, hygrometers, barometers, and sometimes rain gauges. These instruments are used to measure temperature, humidity, air pressure, and sometimes precipitation. The Stevenson screen provides shelter for these instruments to ensure accurate measurements.
•Steven sun screen also known as meteorological screen and it is made by wood. •This screen is used at met. Center and it save the instruments from sun light and rain allowing the passage of air.
The ground, like tarmac or concrete is a solid state which absorb sunlight due to the dark colour (e.g. black). Therefore there is probability that the Stevenson Screen can absorb these heat which can then alter the readings of the instruments. Hope that helps JL
because it is
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
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
The sides of a Stevenson screen are louvered to allow air to circulate freely around the temperature and humidity sensors inside. This design helps prevent the sun's direct rays from hitting the sensors and affecting the accuracy of the readings. The louvered sides also help to reduce the impact of thermal radiation on the inside of the screen.
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