Daniel Gabriel Fahrenheit
by Armando Aguilar Rocha
Before Fahrenheit's model, there were Thermoscopes. These models used alcohol. These models didn’t accurately measure the temperature but rather the pressure of the air with the use of different colored weights in the tube. His model however, used mercury instead of Alcohol. This was influenced by the works of Danish astronomer Olaus Roemer. His first successful thermometers were completed in 1714. The thermometer markings went from 0 to 212. He wanted to keep his methods a secret until making his methods known to the public some 18 years later. Along with his thermometers he discovered that 32 degrees was the freezing point and 212 degrees the boiling point of water.