Interesting explanation, via http://ralfmaximus.tumblr.com/post/73635353732/spinningyarns-doctorbee-xwidep-scales This is because Fahrenheit is based on a brine scale and the human body. The scale is basically how cold does it have to be to freeze saltwater (zero Fahrenheit) to what temperature is the human body (100-ish Fahrenheit, although now we know that’s not exactly accurate). Fahrenheit was designed around humans. Celsius and Kelvin are designed around the natural world. Celsius is ...