Everyone is looking at the thermometer lately. Freezing temperatures in places that haven’t seen it that cold in quite a while. But which thermometer do you consult? How cold is it really? When I hear that it is 10 degrees, my first reaction is: “Oh, that’s quite nice for this time of year. I will not need my warm hat or scarf.” But others are saying that it is freezing. That is because some of us are using the Celsius scale and others the Fahrenheit scale.
Daniel Gabriel Fahrenheit, for whom the scale is named, was a Polish German (born in Poland to a German family) who lived and worked in the Netherlands in the 17th and 18th centuries. He is credited with improving thermometers, with making the first mercury-in-glass thermometers (which were much more reliable) and getting everyone to adopt his scale of measurement. And this all so long ago. So how is it that people in the US use Fahrenheit, but people in the Netherlands use Celsius?
Fahrenheit was born in Danzig (Gdansk) Poland to a German Hanseatic trading family. He was just about 15 when his parents died from eating poisonous mushrooms and he was placed under guardianship. In this way he ended up doing an apprenticeship in Amsterdam. He ran away when this was completed and traveled around what was then the Holy Roman Empire while his guardians issued an arrest warrant. But it was in this time that he also was manufacturing thermometers and researching the various scales and methods used. By 1721 he was already perfecting his thermometers while in the Netherlands.
At the same time, others were still using another scale. “Centigrade” was used by the Swedes and French and much of the world. This is how I remember learning the “other” scale. But it was changed to “Celsius” in 1948. However you measure, cold remains cold. Listen to the weather man or woman and decide then if you need to put on your scarf or not before going outside.