thermometer pronunciation

Thermometer | Encyclopedia.com mercury thermometer: 1 n thermometer consisting of mercury contained in a bulb at the bottom of a graduated sealed glass capillary tube marked in degrees Celsius or Fahrenheit; mercury expands with a rise in temperature causing a thin thread of mercury to rise in the tube Synonyms: mercury-in-glass thermometer Types: Beckman thermometer a . 4.6 out of 5 stars 22. In a sense then, radiometric thermometry might be thought of as "universal". Traditional thermometers were all non-registering thermometers. Such a mechanism was later used to show the hotness and coldness of the air with a tube in which the water level is controlled by the expansion and contraction of the gas. In health care, thermometers are used to measure the temperature of the human body.They include the following types: A thermometer is a device that is used to measure the temperature of a body.

An instrument for measuring and indicating temperature, typically one consisting of a narrow, hermetically sealed glass tube marked with graduations and having at one end a bulb containing mercury or alcohol that expands and contracts in the tube with . In 1593, Galileo Galilei invented a rudimentary water thermoscope, which for the first time allowed temperature variations to be measured. With COP26 currently underway in Glasgow, we look at the large and constantly evolving lexicon of climate change. Empirical thermometers are not in general necessarily in exact agreement with absolute thermometers as to their numerical scale readings, but to qualify as thermometers at all they must agree with absolute thermometers and with each other in the following way: given any two bodies isolated in their separate respective thermodynamic equilibrium states, all thermometers agree as to which of the two has the higher temperature, or that the two have equal temperatures. Temperature measurement is important to a wide range of activities, including manufacturing, scientific research, and medical practice.. Indirect methods of temperature measurement, R.S. temperature changes, the temperature being, Most material © 2005, 1997, 1991 by Penguin Random House LLC. The throng of thermometers pronunciation with meanings, synonyms, antonyms, translations, sentences and more Which is the right way to pronounce the word halcyon? R.P. Hero of Alexandria (10–70 AD) knew of the principle that certain substances, notably air, expand and contract and described a demonstration in which a closed tube partially filled with air had its end in a container of water. "[2] The Italian physician Santorio Santorio (Sanctorius, 1561-1636)[3] is commonly credited with the invention of the first thermometer, but its standardisation was completed through the 17th and 18th centuries. , USA pronunciation n. Meteorology, Physics an instrument for measuring temperature, often a sealed glass tube that contains a column of liquid, as mercury, that expands and contracts, or rises and falls, . quotations . Download our English Dictionary apps - available for both iOS and Android. 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. [4][5][6] In the first decades of the 18th century in the Dutch Republic, Daniel Gabriel Fahrenheit[7] made two revolutionary breakthroughs in the history of thermometry. It is described as having a bulb at the bottom of a sealed tube partially filled with brandy. In 1629, Joseph Solomon Delmedigo, a student of Galileo and Santorio in Padua, published what is apparently the first description and illustration of a sealed liquid-in-glass thermometer. They have to be calibrated against a primary thermometer at least at one temperature or at a number of fixed temperatures. The water level in the tube is controlled by the expansion and contraction of the air, so it is what we would now call an air thermometer.[11]. [42] (This is an example of a Frigorific mixture.) All rights reserved. By definition, the temperature is the measurable extent of hotness or coldness. Our new online dictionaries for schools provide a safe and appropriate environment for children. Such liquid crystal thermometers (which use thermochromic liquid crystals) are also used in mood rings and used to measure the temperature of water in fish tanks. Most thermometers are originally calibrated to a constant-volume gas thermometer. (1) Maximum thermometers A maximum thermometer is a mercury thermometer used to measure the maximum temperature within a certain period. On the night of 4 November 1605 Guy Fawkes, a Catholic, was discovered in an undercroft of the House of Lords guarding a hoard of gunpowder intended to explode the following day at the state opening of Parliament and thereby assassinate the Protestant King James I and annihilate the government. Listen to the audio pronunciation in the Cambridge English Dictionary. Create an account and sign in to access this FREE content, COBUILD Key Words for Mechanical Engineering, I use a meat thermometer when cooking turkey - it. The walls of the cavity, provided they are completely opaque and poorly reflective, can be of any material indifferently.

Click on the arrows to change the translation direction. [59] Galileo thermometers are used to measure indoor air temperature, due to their limited measurement range. [9] The difference between a thermoscope and a thermometer is that the latter has a scale. The three most common units of measurement for temperature are Celsius, Fahrenheit, and kelvin. thermometer ( plural thermometers ) An apparatus used to measure temperature . Definition A thermometer is a device used to measure temperature. This Post Includes: Different kinds of thermometer. Related words - thermometer synonyms, antonyms, hypernyms and hyponyms. Today there is an absolute thermodynamic temperature scale. Thermometer Definition. Some plastics do not have this property;[33]. The thermal expansion is the tendency of metal in which the volume of metal changes with the variation in temperature. [26][35][36][37][38], Gases, on the other hand, all have the properties (1), (2), and (3)(a)(α) and (3)(b)(α). Small Button thermometers such as those used to gauge temperatures for steaks or other similar meats, will be very short in length while . "[41], In contrast, "Secondary thermometers are most widely used because of their convenience. A thermometer is a device that measures temperature or a temperature gradient (the degree of hotness or coldness of an object). [20] In 1999, Dr. Francesco Pompei of the Exergen Corporation introduced the world's first temporal artery thermometer, a non-invasive temperature sensor which scans the forehead in about two seconds and provides a medically accurate body temperature.[21][22]. Candy thermometers are used to aid in achieving a specific water content in a sugar solution based on its boiling temperature. An infrared thermometer is a thermometer which infers temperature from a portion of the thermal radiation sometimes called blackbody radiation emitted by the object being measured. Temperature & Thermometer. Learn more. [8] The expansion and contraction of the air caused the position of the water/air interface to move along the tube. A thermometer has two important elements: (1) a temperature sensor (e.g. That is, the thermometer did not hold the temperature reading after it was moved to a place with a different temperature. The concepts of thermodynamics, in, T. Duncan (1973) Advanced Physics: Materials and Mechanics (John Murray, London), BS1041-2.1:1985 Temperature Measurement- Part 2: Expansion thermometers. A thermometer is a device used to measure temperature. Learn how to pronounce Thermometer in English with video, audio, and syllable-by-syllable spelling from the United States and the United Kingdom. Various thermometric techniques have been used throughout history such as the Galileo thermometer to thermal imaging. What is thermometer kid definition? Tarle Speech & Language Services - English Pronunciation. A resistance thermometer is a type of thermometer which can be used to give extremely accurate results. For measuring temperature a sensitive thermometer . Several types of liquid-in-glass thermometers are used to measure maximum temperature, minimum temperature and soil temperature in addition to ordinary air temperature. Thermometer definition: A thermometer is an instrument for measuring temperature. If it gets too cold in the room, the thermostat adjusts and warms it up. Temperature measurement is important to a wide range of activities, including industry, scientific research, and health care. If it gets too hot in the room, the thermostat adjusts and cools it down. thermometer.

Only some materials are suitable for this purpose, and they may be considered as "thermometric materials". [12] Many other scientists experimented with various liquids and designs of thermometer. For secondary thermometers knowledge of the measured property is not sufficient to allow direct calculation of temperature. That is, does the same thermometer give the same reading for the same temperature (or do replacement or multiple thermometers give the same reading)? Define thermometer. "[41], Thermometers can be calibrated either by comparing them with other calibrated thermometers or by checking them against known fixed points on the temperature scale. An electric resistor known as a thermoresistor is the key to the electric thermometer. Introduction. [10] Though Galileo is often said to be the inventor of the thermometer, there is no surviving document that he actually produced any such instrument.

It extends from 0.65 K (−272.5 °C; −458.5 °F) to approximately 1,358 K (1,085 °C; 1,985 °F). What does thermometer mean? The probe may range in length from several inches to more than 12 inches long, depending on the intended use. A simple digital thermometer is the combination of a thermocouple, a battery-powered, dual-slope digital voltmeter to . Translate thermometer into Spanish. Thermometers are used to see if you have a fever or tell you how cold it is outside. The first clear diagram of a thermoscope was published in 1617 by Giuseppe Biancani (1566 – 1624); the first showing a scale and thus constituting a thermometer was by Santorio Santorio in 1625. It was a container filled with bulbs of varying mass, each with a temperature marking. Alan S. Morris, Reza Langari, in Measurement and Instrumentation (Third Edition), 2021 14.2.7 Digital thermometer. Many empirical thermometers rely on the constitutive relation between pressure, volume and temperature of their thermometric material. Aircraft use thermometers and hygrometers to determine if atmospheric icing conditions exist along their flight path. An example of a reference thermometer used to check others to industrial standards would be a platinum resistance thermometer with a digital display to 0.1 °C (its precision) which has been calibrated at 5 points against national standards (−18, 0, 40, 70, 100 °C) and which is certified to an accuracy of ±0.2 °C. A Thermometer is a device that is used in the measurement of temperature. thermometer - WordReference English dictionary, questions, discussion and forums. [44] For many modern devices calibration will be stating some value to be used in processing an electronic signal to convert it to a temperature. {\displaystyle M} Internationally agreed temperature scales are designed to approximate this closely, based on fixed points and interpolating thermometers. The tube had a numbered scale. thermometer: An instrument for measuring temperature, especially one having a graduated glass tube with a bulb containing a liquid, typically mercury or colored alcohol, that expands and rises in the tube as the temperature increases. Alcohol thermometers, infrared thermometers, mercury-in-glass thermometers, recording thermometers, thermistors, and Six's thermometers are used in meteorology and climatology in various levels of the atmosphere and oceans. [3] As a result, devices were shown to produce this effect reliably, and the term thermoscope was adopted because it reflected the changes in sensible heat (the modern concept of temperature was yet to arise). Several such principles are essentially based on the constitutive relation between the state of a suitably selected particular material and its temperature. [23] For any two empirical thermometers, this does not require that the relation between their numerical scale readings be linear, but it does require that relation to be strictly monotonic. In 1742, Anders Celsius (1701–1744) proposed a scale with zero at the boiling point and 100 degrees at the freezing point of water,[17] though the scale which now bears his name has them the other way around. Thermometric Property | Definition, Formulas, Properties - Thermometry and . Information about thermometer in the AudioEnglish.org dictionary, synonyms and antonyms. A thermometer is an instrument that measures temperature. Pronunciation of thermometer with 3 audio pronunciations, 7 synonyms, 2 meanings, 12 translations, 3 sentences and more for thermometer. Radiometric thermometry, in contrast, can be only slightly dependent on the constitutive relations of materials. It helps control the temperature in the room by making small adjustments to heat or cool the room. Most common for measuring air temperature is the liquid-in-glass thermometer, which consists of a glass tube enlarged at the bottom into a bulb that is partially filled with mercury. All Free. In an office, hospital or other health care facility, it allows a caregiver to record a baseline temperature when a patient is admitted. This sensor's resistance is changed . hal-cyon It is calculated in meter/degree Celsius. These markings are increasing temperatures in Celsius or Fahrenheit. An abbreviation that stands for “non-fungible token”. {\displaystyle M} Planck's law very accurately quantitatively describes the power spectral density of electromagnetic radiation, inside a rigid walled cavity in a body made of material that is completely opaque and poorly reflective, when it has reached thermodynamic equilibrium, as a function of absolute thermodynamic temperature alone. [19] In 1866, Sir Thomas Clifford Allbutt (1836–1925) invented a clinical thermometer that produced a body temperature reading in five minutes as opposed to twenty. How to say thermometer in English? Free online Dictionary including thesaurus, children's and intermediate dictionary by Wordsmyth. [24] This is a fundamental character of temperature and thermometers. See more. For example, mercury expands when heated.

A thermometer is called primary or secondary based on how the raw physical quantity it measures is mapped to a temperature. What does thermometer mean? noun. Last 300 years. Also, they are often much more sensitive than primary ones. Thermometer: A device used to measure the temperature of gaseous, liquid or solid matter or of a chemical reaction such as fire. a sealed. [count] : an instrument used for measuring temperature. Thermometric Property Definition: The property of an object which changes with temperature is called a thermometric property.The devices used to measure temperature are called thermometers.. We are giving a detailed and clear sheet on all Physics Notes that are very useful to understand the Basic Physics Concepts. The precision or resolution of a thermometer is simply to what fraction of a degree it is possible to make a reading. See more. An electric thermometer uses electricity to measure temperature. [12] The word comes from the Greek words θερμός, thermos, meaning "hot" and μέτρον, metron, meaning "measure". Electronic registering thermometers may be designed to remember the highest or lowest temperature, or to remember whatever temperature was present at a specified point in time. 99. A thermometer has two important elements: (1) a temperature sensor (e.g. (1986). Learn how to say TH, ER, M, short o, short u, T, and where to break sy. Thermometers are used in roadways in cold weather climates to help determine if icing conditions exist. Examples of thermometer.

Thermometers used specifically for low temperatures. Definition of thermometer in English: thermometer. Other thermometers to be calibrated are put into the same bath or block and allowed to come to equilibrium, then the scale marked, or any deviation from the instrument scale recorded. [32], (2) Its heating and cooling must be reversible. {\displaystyle M} Gardeners find these tools useful for planning plantings and they are also used by climate scientists, farmers, and soil scientists. From North America's leading language experts, Merriam-Webster Thermometer \Ther*mom"e*ter\ (th[~e]r*m[o^]m"[-e]*t[~e]r), n. [Thermo- + -meter: cf. thermometer, instrument for measuring the temperature of a system. [citation needed] In between fixed calibration points, interpolation is used, usually linear. See Thermal.] Definition of thermometer noun in Oxford Advanced American Dictionary. Registering thermometers are designed to hold the temperature indefinitely, so that the thermometer can be removed and read at a later time or in a more convenient place. the visible scale that is marked on a mercury-in-glass thermometer or the digital readout on an infrared model). F. thermom[`e]tre. View usage for: Definition of thermometer in the Fine Dictionary. He therefore built a constant volume air thermometer. If it is used for its relation between pressure and volume and temperature, a thermometric material must have three properties: (1) Its heating and cooling must be rapid. Definition and synonyms of thermometer from the online English dictionary from Macmillan Education. There are different types of thermometers that are classified according to their needs. There are various kinds of empirical thermometer based on material properties. Press Release Global Industrial Resistance Thermometers Market 2021 Definition, Size, Share, Segmentation and Forecast data by 2027 Published: Oct. 24, 2021 at 8:01 p.m. Mechanical registering thermometers hold either the highest or lowest temperature recorded, until manually re-set, e.g., by shaking down a mercury-in-glass thermometer, or until an even more extreme temperature is experienced. As body temperature varies, the Fahrenheit scale was later changed to use an upper fixed point of boiling water at 212 °F (100 °C).[43]. 'pa pdd chac-sb tc-bd bw hbr-20 hbss lpt-25' : 'hdn'">, Clear explanations of natural written and spoken English. These have now been replaced by the defining points in the International Temperature Scale of 1990, though in practice the melting point of water is more commonly used than its triple point, the latter being more difficult to manage and thus restricted to critical standard measurement. | Meaning, pronunciation, translations and examples sensitive to air pressure. The convergence of money and the internet leads us to 2021’s word of the year: NFT. This page was last edited on 8 November 2021, at 02:08. The above instruments suffered from the disadvantage that they were also barometers, i.e. Learn about the definition and types of thermometers, explore examples of thermometers that are using solid, liquid, and gas, and discover . A dial thermometer, also known as a differential absorption lidar thermometer, is a mechanical device that uses a metal pointer on a circular scale to indicate temperature measurements. Thermometers increasingly use electronic means to provide a digital display or input to a computer. thermometer [ther-mom´ĕ-ter] an instrument for determining temperatures, in principle making use of a substance (such as alcohol or mercury) with a physical property that varies with temperature and is susceptible of measurement on some defined scale. [3] This was a vertical tube, closed by a bulb of air at the top, with the lower end opening into a vessel of water. Definition: The bimetallic thermometer uses the bimetallic strip which converts the temperature into the mechanical displacement. Laboratory thermometers are devices used to measure temperature. Copyright © 2010 by This is the British English pronunciation of thermometer. an instrument for measuring temperatures, consisting of a graduated glass tube with The relative humidity is calculated from the difference in readings of the thermometers when water evaporates from the wet bulb, decreasing its temperature. Proper usage and audio pronunciation (plus IPA phonetic transcription) of the word thermometer. Rain Gauge Experiment: Here is an experiment that allows a kids to make their very own rain gauge. Special instruments can give readings to one thousandth of a degree. L Break 'thermometer' down into sounds: [THUH] + [MOM] + [I] + [TUH] - say it out loud and exaggerate the sounds until you can consistently produce them. In 1724, he proposed a temperature scale which now (slightly adjusted) bears his name. How to use thermometer in a sentence. Place the turkey on top and, if using a meat thermometer, For around a tenner, a meat thermometer is a very, A small digital thermometer helps you to judge how much to, ปรอทวัดอุณหภูมิ, เทอร์มอมิเตอร์, He fell through the window, causing the glass to. Nowadays manufacturers will often use a thermostat bath or solid block where the temperature is held constant relative to a calibrated thermometer. by Penguin Random House LLC and HarperCollins Publishers Ltd, Measure the temperature of the water with a digital, a thermometer that records the highest and lowest temperatures since it was last set, a vane designed to indicate the direction in which the wind is blowing, any of various instruments for measuring humidity. In particular meat thermometers are used to aid in cooking meat to a safe internal temperature while preventing over cooking. . This is because it rests mainly on a universality character of thermodynamic equilibrium, that it has the universal property of producing blackbody radiation. It can measure the temperature of a solid such as food, a liquid such as water, or a gas such as air. Usage explanations of natural written and spoken English. [citation needed] However, this precision does not mean the reading is true or accurate, it only means that very small changes can be observed. At temperatures above the freezing point of water, evaporation of water from the wick lowers the temperature, such that the wet-bulb thermometer will be at a lower temperature than that of the dry-bulb thermometer. Learn how to say Thermometer with EmmaSaying free pronunciation tutorials.Definition and meaning can be found here:https://www.google.com/search?q=define+The. These sensors may be bi-metal or bimetallic, liquid or gas filled . Meaning of thermometer with illustrations and photos. [59]

For many purposes reproducibility is important. A laboratory thermometer can be used for a number of scientific applications and can be found across nearly all laboratories especially in pharmaceutical, environmental, food, and petroleum testing.

In 1714, Dutch[7] scientist and inventor Daniel Gabriel Fahrenheit invented the first reliable thermometer, using mercury instead of alcohol and water mixtures. The markings on a clinical and weather thermometer are different, but they work in the same way. Learner's definition of THERMOMETER. Divide the distance between these marks into equal portions according to the temperature scale being used. Tympanic readings are 0.5°F (0.3°C) to 1°F (0.6°C) higher than oral temperature readings. Cooking thermometers are important for determining if a food is properly cooked. Listen to the audio pronunciation in English. [18] French entomologist René Antoine Ferchault de Réaumur invented an alcohol thermometer and, temperature scale in 1730, that ultimately proved to be less reliable than Fahrenheit's mercury thermometer. In January 2011, the thermometer showed a temperature of -32°C! The traditional way of putting a scale on a liquid-in-glass or liquid-in-metal thermometer was in three stages: Other fixed points used in the past are the body temperature (of a healthy adult male) which was originally used by Fahrenheit as his upper fixed point (96 °F (35.6 °C) to be a number divisible by 12) and the lowest temperature given by a mixture of salt and ice, which was originally the definition of 0 °F (−17.8 °C). Example sentences containing thermometer Thermometers are important in food safety, where food at temperatures within 41 and 135 °F (5 and 57 °C) can be prone to potentially harmful levels of bacterial growth after several hours which could lead to foodborne illness. Global Industrial Resistance Thermometers Market 2021 ... n. An instrument for measuring temperature, especially one having a graduated glass tube with a bulb containing a liquid, typically mercury or colored. M THERMOMETER English Definition and Meaning | Lexico.com column of liquid, as mercury, that expands and contracts, or rises and falls, with Infrared thermometer : definition of Infrared thermometer ... Medical thermometers such as mercury-in-glass thermometers, infrared thermometers, pill thermometers, and liquid crystal thermometers are used in health care settings to determine if individuals have a fever or are hypothermic. Last 100 years ; Record yourself saying 'thermometer' in full sentences, then watch yourself and listen.You'll be able to mark your mistakes quite easily. The word in the example sentence does not match the entry word. A thermometer is an instrument we can use to measure temperature. And best of all it's ad free, so sign up now and start using at home or in the classroom. an instrument for measuring temperature, often a sealed glass tube that contains a They can learn how the Doppler Effect works and why Doppler Radar is such as important tool in weather . Meaning of thermometer. Delmedigo did not claim to have invented this instrument.

It consists of a thermometer with a bulb that is wet or moist and one that is kept dry. Clinical thermometers and many electronic thermometers are usually readable to 0.1 °C. Indoors, thermistors are used in climate control systems such as air conditioners, freezers, heaters, refrigerators, and water heaters. The device has two primary components; the metal pointer, or needle, and a temperature sensor. He invented the mercury-in-glass thermometer (first widely used, accurate, practical thermometer)[2][1] and Fahrenheit scale (first standardized temperature scale to be widely used).[2]. [40] Constant volume thermometers do not provide a way to avoid the problem of anomalous behaviour like that of water at approximately 4 °C.[38]. The thermometer says it's almost 80 degrees outside, but it doesn't feel that hot. Add ${headword} to one of your lists below, or create a new one. Amaze your friends with your new-found knowledge! This provides a well-reproducible absolute thermometer over a very wide range of temperatures, able to measure the absolute temperature of a body inside the cavity. 'Glass thermometers are suitable for measuring temperature at the Earth's surface but would be impractical at higher levels.' 'Digital thermometers and alcohol-filled glass models are just as accurate as mercury ones, and many hospitals are already making the switch.' [24][34] That is to say, throughout the range of temperatures for which it is intended to work, At temperatures around about 4 °C, water does not have the property (3), and is said to behave anomalously in this respect; thus water cannot be used as a material for this kind of thermometry for temperature ranges near 4 °C. A small enough hole in the wall of the cavity emits near enough blackbody radiation of which the spectral radiance can be precisely measured. thermometer. Modified entries © 2019 The thermometer was not a single invention, however, but a development. The range of a thermometer, on the other hand, refers to the dissimilarity between the maximum and the minimum temperature. Use our interactive phonemic chart to hear each symbol spoken, followed by an example of the sound in a word.

Green Bay Packers Crewneck Sweatshirt Men's, Houses For Rent In Columbus, Ga Under $900, Slow Cooker Sweet Potato Casserole With Canned Yams, Category Link Not Working Wordpress, Jamie Oliver 15 Minute Meals - Tastemade Recipes, Cisco Webex Room 55 Dual Admin Guide, Android Zoom Keyboard Shortcut,