What is the purpose of a Stevenson Screen?

Also known as a thermometer screen, the Stevenson screen houses meteorological instruments. These instruments include dry and wet bulb thermometers, which are used to measure air temperature and humidity.

Held by legs, the Stevenson screens are 1.25m/4.1ft above the ground. It stands this way not to be impacted by strong winds. The sides of the screens are louvered to allow passing air to enter. They are white, which helps reflect heat, for black attracts heat. It was created by engineer Sir Thomas Stevenson, who also is credited for creating many lighthouses.

There are some people who are not familiar with what a Stevenson Screen is. This is a type of shelter for the different meteorological instruments. The machines that are usually placed within this shelter are usually effective in reducing the precipitation of the area and getting rid of heat radiation that may come from various sources.

Even if the machines will do what they are supposed to do, the air will still flow freely around the area. The answer to this is D. It can also measure the temperature of the area where it is placed. This will also measure and reduce the overall humidity in the area.