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Jun 13, 2022 · A microchip inside the thermometer measures the resistance and converts it into a measurement of temperature. Photo: Electrical resistance thermometer from 1912: This example of a bridge-type resistance thermometer was built by Leeds and Northrup and used for temperature measurements at the US National Bureau of Standards (now NIST) in the early 20th century.
Mar 29, 2018 · Once the thermometer's temperature balances that of the surrounding air, its liquid will stop moving. The physical rise and fall of the liquid inside of a thermometer is only part of what makes it work. Yes, this action tells you that a temperature change is occurring, but without a numerical scale to quantify it, you'd be unable to measure ...
A thermometer is a device that measures temperature or a temperature gradient (the degree of hotness or coldness of an object). It consists of two parts: a means to measure temperature (e.g., mercury) and a means to convert that temperature into a readable output. There are several types of thermometers, each working on a different principle: 1 ...
To make your thermometer: Drill or punch a hole in the lid of your jar. The hole should be as close to the diameter of the straw as you can get. Insert the end of the straw into the hole, and then seal around the hole with your silly putty both on the inside and the outside of the lid.
- Corey Whelan
- Digital thermometer. Digital thermometers work by using heat sensors that determine body temperature. They can be used to take temperature readings in the mouth, rectum, or armpit.
- Oral thermometer. Oral temperature can be taken by either a digital or mercury thermometer. We’ll go over the benefits and drawbacks of mercury thermometers below.
- Digital ear (tympanic) thermometer. Tympanic thermometers measure the temperature inside the ear canal through infrared ray technology. Tympanic readings are 0.5°F (0.3°C) to 1°F (0.6°C) higher than oral temperature readings.
- Forehead (temporal) thermometer. Forehead thermometers use infrared sensors to measure the temperature of the superficial temporal artery, which is a branch of the carotid artery.
A thermometer is a device that measures temperature (the hotness or coldness of an object) or temperature gradient (the rates of change of temperature in space). 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 ...
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Jul 16, 2024 · Thermometers are used to measure temperature according to well-defined scales of measurement, which use pre-defined reference points to help compare quantities. The three most common temperature scales are the Fahrenheit, Celsius, and Kelvin scales. A temperature scale can be created by identifying two easily reproducible temperatures.
