Following are the different types of thermometers that we use on a daily basis: Clinical thermometers are meant for clinical purposes. Daniel Gabriel Fahrenheit invented the first thermometer, a mercury-in-glass thermometer, in 1714. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. If the thermometer reading is 32℉ or 0℃, then the thermometer is said to be accurate. Already registered? Heat is a form of energy and its unit is Joules. A variety of liquids, such as mercury, alcohol, toluene, and pentane, and a number of different glasses are used in thermometer construction, so that various designs cover diverse ranges between about -300°F and +1200°F (-184°C and +649°C). Study.com has thousands of articles about every This device is made of a solid semiconductor with a high temperature coefficient of resistance. Mercury expands as the temperature increases, thus raising the reading, while decreasing temperatures contract the mercury, lowering the reading. The following are the properties of alcohol for thermometers: To check if a thermometer is accurate, we need to insert the stem of the thermometer in the ice water such that the stem is at least an inch deep without touching the glass. A laboratory thermometer is a tool used in laboratories to measure temperature with a high level of accuracy. credit by exam that is accepted by over 1,500 colleges and universities. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. A laboratory thermometer is recognizable by its long stem with a silver bulb at the end. This thermometer consists of a liquid-filled glass bulb and a connecting partially filled capillary tube. Hence, the temperature reading is 98 + (3×2) = 98.6. The liquid crystals twist and move in response to changes in temperature. One type of thermometer is a narrow, concealed glass tube containing mercury or alcohol which extends along the tube as it expands.
Thermometer, instrument for measuring the temperature of a system. Not sure what college you want to attend yet? The mercury-in-glass thermometer was the very first, invented by Daniel Gabriel Fahrenheit in 1714. The mercury level rises and indicates the temperature of the surroundings. The Lab Depot has the best selection of lab equipment. There are several different types of thermometers used in the laboratory. As the gas heats up, the gas molecules move faster and hit the side of the container more often. Joanne has taught middle school and high school science for more than ten years and has a master's degree in education. As the metals gets hotter, the atoms inside it vibrate faster. It is a mathematical representation of heat. Medical Definition of thermometer : an instrument for determining temperature that usually consists either of a device providing a digital readout or of a glass bulb attached to a fine tube of glass with a numbered scale and containing a liquid (as mercury or colored alcohol) that is sealed in and rises and falls with changes of temperature Wait for a minute or less so that the thermometer registers the reading of the ice water. Liquid crystals have the properties of both liquids and solids. Since mercury is highly toxic, it is rare to find mercury thermometers outside of science labs these days. All other trademarks and copyrights are the property of their respective owners.
Therefore, even the slightest change in temperature is notable. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. Wait for a few seconds before you hear the alarm from the thermometer. From Elkin et al., 2000. We use a device called thermometer to measure the temperature of any object. Bimetallic thermometers are sometimes used. Create an account to start this course today. - Definition, Types & Uses, Chromatography, Distillation and Filtration: Methods of Separating Mixtures, Force, Area & Pressure: Relationship & Applications, Bernoulli's Principle: Definition and Examples, M-STEP Science - Grade 11: Test Prep & Practice, WBJEEM (West Bengal Joint Entrance Exam): Test Prep & Syllabus, NY Regents Exam - Living Environment: Help and Review, UExcel Anatomy & Physiology: Study Guide & Test Prep, Holt Physical Science: Online Textbook Help. Select a subject to preview related courses: Many industrial thermometers utilize gas in a metal or glass enclosure. Become an Air Conditioning Contractor: Step-by-Step Career Guide, Homeland Security Officer: Career Options and Requirements, How to Become a Certified Administrative Professional, Schools with Confectionery Programs How to Choose, List of Top Colleges with Master of Social Work Degrees, Online Spanish Teacher Certification Information, Graduate Certificate Programs in Health Economics, Introduction to Chemistry: Help and Review, Thermometer: Definition, Types & Examples, Measurement and Problem Solving: Help and Review, Experimental Laboratory Chemistry: Help and Review, Understanding Atomic Structure: Help and Review, The Periodic Table of Elements: Help and Review, The Representative Elements of the Periodic Table: Help and Review, Nuclear Chemistry & Radioactive Decay: Help and Review, Phase Changes for Liquids and Solids: Help and Review, Stoichiometry and Chemical Equations: Help and Review, Acids, Bases, and Reactions: Help and Review, Equilibrium in Chemistry: Help and Review, Thermodynamics in Chemistry: Help and Review, Organic Chemistry Basics: Help and Review, Chemistry of DNA and RNA: Help and Review, Chemistry of DNA Replication: Help and Review, Basics of Atoms, Elements & the Periodic Table, Mass Relationships for Molecules & Compounds, Chemical Reactions, Rate Laws & Constants, Electrochemistry, Voltaic Cells & Thermodynamics, 8th Grade Earth Science: Enrichment Program, High School Chemistry: Homeschool Curriculum, 6th Grade Life Science: Enrichment Program, 7th Grade Life Science: Enrichment Program, Physical Geology Syllabus Resource & Lesson Plans, Glencoe Physical Science: Online Textbook Help, Using the Two-Charge Model of Electric Charge, The Theory of Conservation of Mass-Energy, Why Properties of Space & Time Are Not Absolute, What Is Permittivity? Laboratory thermometers:They are used to measure temperatures or temperaturechangeswithahighdegreeofprecision.Theyaremadeofmetalorglassandstrengthenedthroughprocessessuchasthermaltemperingorannealing.For example, liquid-in-glassthermometersaremadeofsealedglassandcontainafluid,usuallymercuryorredcolouredalcohol,whosevolumechangesrelativelytoitstemperature.Bimetallicstripthermometersincludetwodifferentmetalsthatarebondedtogetherandexpandatdifferentratesastheywarmup.Longbimetallicstripsarewoundintoacoilandusedwithadial.
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