Thermometers

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Thermometers

• A thermometer is a device that measures the
  temperature of outside or inside your house,
  inside your oven, even the temperature of your
  body if you're sick.
• The thermometer measures temperatures in
  Fahrenheit, Celsius and another scale called
  Kelvin.

Celsius
Fahrenheit
To change Celsius temperature to Fahrenheit
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Kelvin Scale and Absolute Zero

• Temperature gives us an idea of how hot or cold
  an object is.
• The temperature of an object depends on how fast
  the atoms and  molecules.
• As an object is cooled, the movement of its atoms
  and molecules slow down. Ex as water cools, the
  slowing movement of the molecules allow the water
  to freeze into ice.
• In all materials, a point is eventually reached
  at which all movement are the slowest they can
  possibly be. The temperature which corresponds to
  this point is called absolute zero. Note that the
  movement never come to a complete stop, even at
  absolute zero.

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Kelvin Scale

• Scientists - especially those who study what
  happens to things when they become very, very
  cold - commonly use the Kelvin scale, with
  temperatures measured in Kelvin (K). This scale
  uses the same temperature steps as the Celsius
  scale, but is shifted downward. On this scale,
  water freezes at 273 K and boils at 373 K. Only
  on the Kelvin temperature scale does absolute
  zero actually fall at 0 K. 

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Standard Temperature and Pressure (STP)

• Standard temperature and pressure, abbreviated
  STP, refers to nominal conditions in the
  atmosphere at sea level. This value is important
  to physicists, chemists, engineers, pilots and
  navigators.
• Standard temperature is defined as zero degrees
  Celsius (00C), which translates to 32 degrees
  Fahrenheit (320 F) or 273.15 Kelvin (273.15 K).
  This is essentially the freezing point of pure
  water at sea level, in air at standard pressure
• Tk ( Tc 273) K
• Tc ( Tk - 273)0 C