What is the function of a thermometer in a 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 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.

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 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.

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 are the important components of a thermometer?

A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a mercury-in-glass thermometer or the pyrometric sensor in an infrared thermometer) in which some change occurs with a change in temperature; and (2) some means of converting this change into a numerical value (e.g. the visible scale …

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.

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.

What temp 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 is your normal temperature?

Normal body temperature ranges from 97.5°F to 98.9°F (36.4°C to 37.2°C). It tends to be lower in the morning and higher in the evening. Most healthcare providers consider a fever to be 100.4°F (38°C) or higher.

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.

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.

How does a thermometer measure temperature?

When the tip of the mercury thermometer touches the material it is measuring, the material conducts heat energy to the mercury. Then the mercury expands as it turns into a liquid and begins to rise up the tube. The place where the mercury stops on the scale is where you can take the reading of the temperature.

Why are liquids used in 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 two 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).

Can you have Covid without a fever?

Many people who are infected have more mild symptoms like a scratchy throat, stuffy or runny nose, occasional mild cough, fatigue, and no fever. Some people have no symptoms at all, but they can still spread the disease.” Fever seems to be one of the more common early markers of COVID-19, Kline noted.

Why do I feel hot but no fever?

People may feel hot without a fever for many reasons. Some causes may be temporary and easy to identify, such as eating spicy foods, a humid environment, or stress and anxiety. However, some people may feel hot frequently for no apparent reason, which could be a symptom of an underlying condition.

What causes fever?

A fever is a temporary rise in body temperature. It's one part of an overall response from the body's immune system. A fever is usually caused by an infection. For most children and adults, a fever may be uncomfortable.

Do thermometers measure heat?

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.

How thermometer are 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 are thermometers made of?

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.

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 do I check my temperature with a thermometer?

How do I take a temperature?

Clean the tip with cold water and soap, then rinse it.
Turn the thermometer on.
Put the tip under your tongue, towards the back of your mouth.
Close your lips around the thermometer.
Wait until it beeps or flashes.
Check the temperature on the display.

Can you be positive for COVID but test negative?

Some people with mild infections may test negative on an antigen test, but positive on a PCR test. This would mean that they have COVID, but don't have enough virus to turn an antigen test positive.

What are the first few symptoms of COVID?

Watch for Symptoms

Fever or chills.
Cough.
Shortness of breath or difficulty breathing.
Fatigue.
Muscle or body aches.
Headache.
New loss of taste or smell.
Sore throat.