What is the function of thermometer in laboratory?
A laboratory thermometer, which is colloquially known as the lab thermometer, is used for measuring temperatures other than the human body temperature. It ranges from -10˚C to 110˚C. Laboratory thermometers are designed for lab purposes such as checking boiling point, freezing point, or temperature of other substances.
What are the functions of digital thermometer?
Digital Thermometers A digital thermometer is used to verify a smart temperature transmitter under flowing conditions and a successful calibration of the smart temperature transmitter. Portable electronic thermometers (PETs) are designed to measure temperature in a RTD-type thermowell using a thermistor or RTD probe.
What are the four uses of thermometer?
– To measure the outdoor temperature. – To measure body temperature during a physical exam at the doctors. – To measure body temperature when someone is ill to determine if he/she has a fever. – To measure the temperature of an oven.
How is a thermometer used in chemistry?
Place the end of the thermometer with the reservoir of liquid in the testing medium. For example, if you are testing the temperature of ice water, place the reservoir in the water, below the ice, but not touching the bottom of the flask or cup the water is held in. This will garner a more accurate temperature.
What is the function of a mercury in a thermometer?
Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.
What are the 2 important things that he does upon using thermometer?
A thermometer has two important elements: the temperature sensor (such as the bulb on a mercury thermometer) in which some physical change occurs with temperature, and some means of converting this physical change into a value (such as the scale on a mercury thermometer).
What is the function of infrared thermometer?
Infrared (IR) thermometers are useful in measuring temperature across a range of industrial and clinical environments. These non-contact temperature measurement devices function well in circumstances where the object is fragile and dangerous to get near to, or when other kinds of thermometers are not practical.
What are 3 kinds of thermometers and their uses?
The different types of medical thermometers
- Digital thermometer. Digital thermometers work by using heat sensors that determine body temperature. …
- Oral thermometer. …
- Digital ear (tympanic) thermometer. …
- Forehead (temporal) thermometer. …
- App-based thermometer. …
- Pacifier thermometer. …
- Mercury (liquid in glass) thermometer.
Dec 15, 2020
What is used to measure heat?
The apparatus used to measure heat is called a calorimeter.
How does a thermometer measure temperature?
A thermometer measures temperature through a glass tube sealed with mercury that expands or contracts as the temperature rises or falls. The tiny size of the bulb and micro-fine size of the tube help the mercury reach the temperature of what it is measuring very rapidly.
How is temperature measure?
The more energy of motion the molecules have, the higher the temperature you feel in the air. Air temperature is measured with thermometers. Common thermometers consist of a glass rod with a very thin tube in it. The tube contains a liquid that is supplied from a reservoir, or "bulb," at the base of the thermometer.
What is the function of a bulb in a thermometer?
The bulb in a thermometer is filled with mercury. When the bulb is heated, mercury in the bulb expands and rises up in the capillary tube. The height of the mercury gives the reading of temperature.
What happens if you touch mercury?
MERCURY EXPOSURE If it is swallowed, like from a broken thermometer, it mostly passes through your body and very little is absorbed. If you touch it, a small amount may pass through your skin, but not usually enough to harm you.
How does a thermometer measure weather?
How does a weather thermometer work? When air around the thermometer tube heats up the liquid inside it, the liquid expands and moves up the tube. There's usually a scale on each side of the tube to indicate the temperature, which you can measure by seeing where the liquid stops on the scale.
Why does liquid in the thermometer?
Function. The liquid in a thermometer typically stays in a bulb at the bottom of the device. Because liquids expand as temperatures rise, the liquid climbs the thermometer tube as the temperature warms.
What temperature is a fever?
An adult probably has a fever when the temperature is above 99°F to 99.5°F (37.2°C to 37.5°C), depending on the time of day.
What’s the right body temperature?
Fevers usually don't need treatment. The average body temperature is 98.6 F (37 C). But normal body temperature can range between 97 F (36.1 C) and 99 F (37.2 C) or more. Your body temperature can vary depending on how active you are or the time of day.
How do you read a thermometer?
Most thermometers have two scales for temperature, Fahrenheit and Celsius. Read the numbers for °F (degrees of Fahrenheit). Each long line is for 1°F temperature. The four shorter lines between each long line are for 0.2°F (two tenths) of a degree of temperature.
Do thermometers measure heat or temperature?
Despite its name, however, a thermometer does not actually record heat, but rather temperature. Temperature and heat are two radically different concepts. A thermometer with Celsius and Farenheit scales. Temperature is a measure of the average kinetic energy of the molecules within a substance.
Do thermometers absorb heat?
As the fluid inside a thermometer absorbs heat, it expands, occupying a greater volume and forcing the fluid level inside the tube to rise.
How are thermometers used in measuring temperature and how they can be read?
A thermometer is a device that is used to measure temperature, which is how hot or cold something is. The unit of measurement for temperature is a degree, and the two temperature scales are Fahrenheit and Celsius. Thermometers often have increments, which mark the fives or tens place on the thermometer.
What does the thermometer reading simply?
Temperature is defined as the measure of the degree of hotness or coolness of an object. The device used for measuring temperature is called a thermometer….State true or false: The expansion of mercury due to heat indicates the temperature.
| PHYSICS Related Links | |
|---|---|
| Electrical Energy | Hooke's Law Of Elasticity |
What is the basic definition of temperature?
Definition of temperature 1a : degree of hotness or coldness measured on a definite scale. b : the degree of heat that is natural to the body of a living being.
What is the function of mercury in thermometer?
In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.
Who uses thermometer?
Thermometers measure temperatures in degrees, according to either the Celsius or Fahrenheit system. Meteorologists use thermometers to find out how hot it is or if it's below freezing. Doctors use thermometers to check your body temperature — a very high or low body temperature means you're sick.
Can you drink mercury?
Mercury is a very toxic or poisonous substance that people can be exposed to in several ways. If it is swallowed, like from a broken thermometer, it mostly passes through your body and very little is absorbed. If you touch it, a small amount may pass through your skin, but not usually enough to harm you.
What happens when mercury falls on gold?
Freddie Mercury may have had the golden voice, but real mercury, that endlessly entertaining and dangerous liquid metal, has the golden touch. That is, if it touches gold it will immediately break the lattice bonds of the precious metal and form an alloy in a process known as amalgamation.
Where do you measure temperature?
Ways to Take a Temperature
- Rectal. The thermometer is placed in the child's bottom. …
- Oral. The thermometer is placed in the mouth under the tongue. …
- Axillary. The thermometer is placed in the armpit.
- Tympanic. The thermometer is placed in the ear.
- Temporal artery. The thermometer scans the surface of the forehead.
How can you use a thermometer to measure air temperature?
September 3, 2020 // Article by: Tom Collow
- Place the thermometer 5 feet above the ground (+/- 1 ft.). …
- The thermometer must be placed in the shade. …
- Have good air flow for your thermometer. …
- Place the thermometer over a grassy or dirt surface. …
- Keep the thermometer covered.
Sep 3, 2020
What do F and C means in thermometer?
There are two scales used for taking temperature: Fahrenheit (F) and Centigrade (C).