<P> Fahrenheit is used in the United States, its territories and associated states (all served by the U.S. National Weather Service), as well as the Bahamas, Belize, and the Cayman Islands for everyday applications . For example, U.S. weather forecasts, food cooking, and freezing temperatures are typically given in degrees Fahrenheit . Scientists, such as meteorologists, use Celsius or Kelvin in all countries . </P> <P> Early in the 20th century, Halsey and Dale suggested that the resistance to the use of centigrade (now Celsius) system in the U.S. included the larger size of each degree Celsius and the lower zero point in the Fahrenheit system . </P> <P> Canada has passed legislation favoring the International System of Units, while also maintaining legal definitions for traditional Canadian imperial units . Canadian weather reports are conveyed using degrees Celsius with occasional reference to Fahrenheit especially for cross-border broadcasts . Virtually all Canadian ovens make legal use of the Fahrenheit scale . Thermometers, both digital and analog, sold in Canada usually employ both the Celsius and Fahrenheit scales . Also, in some instances (swimming pool temperature, thermostats, or cooking temperatures for example), temperatures are still expressed in Fahrenheit . </P> <P> Within the European Union, it is mandatory to use kelvins or degrees Celsius when quoting temperature for "economic, public health, public safety and administrative" purposes, though degrees Fahrenheit may be used alongside degrees Celsius as a supplementary unit . For example, the laundry symbols used in the United Kingdom follow the recommendations of ISO 3758: 2005 showing the temperature of the washing machine water in degrees Celsius only . The equivalent label in North America uses one to six dots to denote temperature with an optional temperature in degrees Celsius . </P>

What is the meaning of celsius and fahrenheit