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The Stevenson screen, the white box that shelters thermometers at weather stations worldwide, was invented by the Scottish lighthouse engineer Thomas Stevenson, father of the author Robert Louis Stevenson.
Thomas Stevenson, who lived from 1818 to 1887, came from Edinburgh's famous family of lighthouse builders. In the 1860s he designed what he called a 'box for holding thermometers', with louvred sides that let the air flow round the thermometers while keeping off the sun and the rain. It went on to become a familiar sight at weather stations around the UK and around the world. In 2024 a University of Reading study found that, 160 years on, the screen is still remarkably effective: its readings differed by more than 1°C from a modern fan-ventilated thermometer in only 1% of cases.
The lighthouse on the cliffs at Eshaness.You are up to date.
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