25: Fahrenheit and Celsius Jan 2, 2015
  With the temperature finally going down in the North East, today's words
 are in the theme of temperature. Fahrenheit is a temperature scale 
based on one proposed in 1724 by the German physicist Daniel Gabriel 
Fahrenheit, after whom the scale is named. Celsius is named after the 
Swedish astronomer Anders Celsius. The unit was known until 1948 as 
"centigrade" from the Latin 'centum' translated as 100 and 'gradus' 
translated as "steps".
