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Typical Liquid in Glass Thermometers (air and body temperature)
Molecules moving around the thermometer impart energy to the liquid inside, increasing its own energy, or heat. The heat causes the expansion of the liquid, which rises up the tube.
The molecules in contact with the thermometer can also absorb energy from the molecules of the liquid, which will cause the liquid to contract, and move down in the tube. (The glass tube has little friction, and the liquid is highly cohesive, so it will "pool" in the reservoir at the bottom when it cools.) The balance between energy absorbed and energy imparted will be achieved when the thermometer liquid is at the same temperature as the measured material, as indicated on the marked graduated tube.
Metal Coil Thermometers (thermostats)
As with liquid thermometers, the metal winding expands or contracts in response to the energy absorbed from the air or liquid around it. This expansion pushes the end of the metal indicator back and forth in the dial face.
What else can I help you with?
How do you tell how hot or cold something is?
use a thermometer.We can feel how hot or cold something is. However, sometimes things are just too hot or cold for us to feel safely. At other times we need to know exactly how hot or cold something is. When we need to measure temperature correctly we need to use an instrument called a thermometer. This measures temperature in degrees Celsius [sometimes called centigrade] or degrees Fahrenheit. There are different types of thermometers for different situations. A medical thermometer, for example, needs to be very accurate. It measures in fractions of degrees. When we are ill, even tiny changes in temperature are important. Some thermometers use a liquid that moves up a very fine glass tube. Most room thermometers, and outdoor thermometers are like this. The liquid is either mercury [ which is poisonous] or coloured alcohol. As liquids get warmer they expand [get bigger], and move up the tube. Water expands too, but not as much as alcohol and mercury. Thermometers that might be used by small children are not made of glass. They use a digital display which lights up the temperature. Inside the displays are chemicals that change colour according to the temperature.
What are the types of thermometer?
Celsius, Fahrenheit, and Kelvin.
Origin of the word thermometer?
Thermometer
How can you measure a body temperature?
What kind of thermometer you use to measure the body temperature
A device used to display the temperature?
a thermometer thermometer a thermometer
What is the plural of thermometer?
The plural of thermometer is thermometers.
Can you use the word thermometer in sentence?
The thermometer is broken.Put the thermometer under your tongue.
Different types of thermometers?
Celsius and Fahrenheit Thermometers Clinical Thermometers Ear (Tympanic) thermometers Pacifier Thermometers Underarm or Oral Thermometers Food Thermometers Outdoor Thermometers Mechanism of Different Types of Thermometers Mercury and Alcohol Thermometers Digital Thermometers Alcohol thermometer Beckmann differential thermometer Bi-metal mechanical thermometer Electrical resistance thermometer Galileo thermometer Infrared thermometer Liquid Crystal Thermometer Medical thermometer (e.g. oral thermometer, rectal thermometer, basal thermometer) Mercury-in-glass thermometer
Which apparatus is more accurate clinical thermometer or laboratory thermometer?
Lab thermometer.
What is a classroom thermometer?
A "classroom thermometer" is a thermometer assigned to be kept in a specific classroom.
What do you call an ear thermometer?
An ear thermometer is commonly referred to as a tympanic thermometer.
What is the difference between a heat thermometer and a regular thermometer?
There is no difference between a heat thermometer and a regular thermometer. A thermometer measures the average kinetic energy of something, also known as heat. A thermometer's purpose is to measure heat, so a regular thermometer is the exact same thing as a regular thermometer, just with different names.
