When it comes to Fahrenheit vs. Celsius, the world is in agreement—mostly. Here's why the United States is still stuck on ...

A conversion graph is a way of representing the relationship between two sets of variables that vary in direct proportion, like miles to kilometres, Celsius to Fahrenheit or pints to litres.

Subsequently, Fahrenheit, who was now of age, tried to determine Fahrenheid's zero point and reached it by measuring "salted ice", a mixture of ice and ammonium chloride at -17.8 degrees Celsius.