Question

what is a thermometer how does it work and write its use​

Answer 1

Definition: A thermometer is an instrument for measuring temperature of an object or a substance.

Working of thermometer: A thermometer has a glass tube sealed at both ends and is partly filled with a liquid like mercury or alcohol. As the temperature around the thermometer's bulb heats up, the liquid rises in the glass tube. The glass tube is mounted on a backboard that is marked in units called degrees.

Its uses:

• A thermometer comes in handy when you need to know the temperature of objects to prevent from burn injuries for ensuring safety of people in the family, especially children

• Infrared thermometers are designed to take readings from a distance so, when you are working on your automobile and having a hard time reaching the wires, hose and other equipment, this thermometer can prove beneficial in this situation.

• In some industries, it is very important to check for air leaks and poorly insulated areas to ensure safety standards are maintained. For example, the need of insulation can be checked by comparing the temperature of the interior and the exterior surface of the walls and if the difference is large, then the walls need proper insulations.

• Big restaurants use thermometers to keep track of the oil and dish’s temperature to achieve perfection and customer satisfaction. Simply using an infrared thermometer to test the sample will give you the result of the whole batch. Whether it is a fresh batch are leftovers, it should be heated up to 165 degrees for 15 seconds in order to eat.

Answer 2

Answer:

thermometer is an instrument that is used to measure a temperature of any thing

Explanation:

it contains mercury which rises up and down indicating the rise and fall of temperature

it is used to measure body temperature and chemical temperature