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              Fahrenheit Scale

              The Fahrenheit scale was discovered by the German scientist, Gabreil Fahrenheit. The scale
              is  divided  into  180 equal  divisions  of 1°F each in  fahrenheit  scale;  water freezes at 32°F
              and boils at 212°F. Thus, the thermometer has readings from 32° Fahrenheit (or 32°F) to
              212° Fahrenheit (or 212°F).


                               Water freezes                    Water boils
                                  (32°F)                          (212°F)                               Note
                                                                                                  °F is read as
                                                                                                  ‘degree fahrenheit’.

                                    32°F  52°F  72°F  92°F  112°F 132°F 152°F 172°F 192°F 212°F  °C
              Clinical  Thermometer: The thermometer which  is  used  for measuring  body  temperature

              is known as clinical thermometer. This thermometer has readings from 35°C to 42°C. The
              normal body temperature of a human body on the celsius scale is 37°C.

                                         Normal body temperature
                                                 (37°C)                                               FACTS
                                                                                                 On the fahrenheit
                                                                                                 scale, the normal
                                                                                                 body temperature of
                                                                                                 a human is 98.6°F.
                                                         98.6°F


              These days a digital thermometer has become a popular choice than a mercury thermometer.
              It has  a heat sensor  that can  identify the  temperature and  display it  on screen and  it  is
              safer as it doesn't contain any harmful chemicals.
              Both thermometers are filled  with  mercury. The level to  which  mercury rises  shows the
              temperature of the object.

                                                              °F
                                     °C                     240
                 The number 100       100   100°C – 212°F   230
               represents the boiling   90                  220       The number 212
                                                            210
               temperature of water   80                    200     represents the boiling
                                                            190
                in degrees Celsius.   70                    180     temperature of water
                                                            170
                                      60                    160     in degree Fahrenheit.
                                                            150
                                                            140
                                      50                    130
                                                            120
                                      40                    110
                                                            100
                                      30                     90
                                                             80
                                      20                     70
                                                             60       From here, we observe:
                                      10                     50
                                      0       0°C – 32°F     40          Water          Celsius        Fahrenheit
                                                             30
                                      -10  Freezing Point of   20
                                                             10
                                      -20      Water        -10 0                        Scale            Scale
                                      -30                   -20         Freezing
                                                                          Point           0°C             32°F
                                                                         Boiling
                                  Celsius                  Fahrenheit                   100°C             212°F
                                                                          Point
                                               Mercury

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