Why does the Fahrenheit scale use 32 degrees as a freezing point?
Asked by: Maria Ciaramitaro
Answer
Daniel Fahrenheit did not use the freezing point of water as a basis for developing his
scale. He called the temperature of an ice/salt/water mixture 'zero degrees', as this
was the lowest temperature he could conveniently attain in his lab. He called his own
body temperature '96 degrees', and then divided the scale into single degrees between 0
and 96. On this scale, the freezing point of pure water happens to occur at 32 (and the
boiling point at 212). The Celsius scale has more convenient values for these phase
transition points (0 and 100 degrees) because Anders Celsius DID use water as a basis
for his scale.
Answered by: Jonathan Heath
'In a way science is a key to the gates of heaven, and the same key opens the gates of hell, and we do not have any instructions as to which is which gate.
Shall we throw away the key and never have a way to enter the gates of heaven? Or shall we struggle with the problem of which is the best way to use the key?'