Explain the working of ‘Six’s maximum and minimum thermometer’ Six’s Maximum and Minimum thermometer is a U shaped parallel tube made up of glass. The Six's thermometer was invented by James Six in the UK in 1780. The steel indexes are Its purpose is to record the maximum and minimum temperatures reached since the thermometer was last read. It's purpose is to record maximum and minimum temperature , since it was last read. £8.49. One of the bulbs is completely filled with alcohol and the other bulb is … A Six's thermometer functions by using alcohol to expand or contract the mercury inside to display both the highest and lowest temperatures of a given time period. There is a (metal) block at each end of the liquid column that is pushed along as the column advances. The thermometer consists of a U-shaped glass tube with two separate temperature scales set along each arm of the U. Its purpose is to read themaximum and minimum temperatures reached since thethermometer was last read. The maximum and minimum readings are recorded by two small steel markers which are sprung into the capillary tube so that they can slide, but only if a force is applied to them, either by being pushed by the mercury or under the influence of an external magnet. minimum column resulting in a fall of mercury in the maximum column. temperature. One side registers the maximum temperature and the other side records the minimum temperature. This also pushes the mercury down in the minimum column. These indexes are displaced by the expansion and contraction of the mercury, remaining at their extreme positions to give readings of the maximum and minimum temperatures. Inventory Number: 1998-1-1410. When the temperature These thermometers, like the l The vacuum in the other bulb allows free movement of the alcohol and mercury. As the alcohol expands and contracts, the mercury moves the indicators. Digital Display Max Min Greenhouse Thermometer Garden Indoor Outdoor Wall Room. This is unlike a normal mercury thermometer, in which the expansion and contraction of mercury itself indicates temperature. expansion and contraction of alcohol. Tutorvista.com has created a video animation to describe the working of the different types of Thermomenters. It is the alcohol which measures the temperature; the mercury indicates the temperature reading on both scales. The bend at the bottom of the thermometer contains mercury which moves up or down based on the expansion and contraction of alcohol. registers the maximum temperature and the other side records the minimum Six's thermometer is a registering thermometer which can record the maximum and minimum temperatures reached over a period of time, for example 24 hours. Electronic thermometers often include a maximum–minimum registering feature. the thermometer contains mercury which moves up or down based on the As the temperature varies, the markers will remain in their positions unless the temperature becomes higher (for maximum) or lower (for minimum) than already recorded, in which case the relevant marker is pushed further. (If the markers are not reset, they will register maxima and minima only if they exceed the values already encountered. Using this animatited video we can understand the construction and the working of a Six's maximum and minimum thermometer. There are bulbs at the top of each arm of the tube, one above each indicator. Before a new maximum or minimum reading can be taken, the thermometer must be reset by moving the markers to the top of the mercury, usually by hand using a small magnet to slide them along the tube. One type of minimum-maximum thermometer consists of a U-shaped glass tube, which is designed to read the correct temperature at both ends of the enclosed column of liquid. Why is alcohol used in measuring temperature of very cold countries? Before a maximum or minimum reading can be taken, both markers must be returned to the top of the mercury, usually by hand using a small magnet to slide them along the tube. The bend at the bottom of the thermometer contains mercury which moves up or down based on the expansion and contraction of alcohol. 4. This thermometer is popular among gardeners for use in greenhouses. Six's thermometer is a thermometer which can measure the maximum and minimum temperatures reached over a period of time, usually during a day. Want a call from us give your mobile number below, For any content/service related issues please contact on this number. Traditionally maximum and minimum temperatures were measured using the set-up shown in the photo above. Their positions on the maximum and minimum scales show the highest and lowest temperatures encountered since the last reset.[4]. rises, the alcohol expands and pushes the mercury up the maximum column. Rights. How is a six’s thermometer useful in a green house? It is used to record extreme temperatures at a location as in meteorology, horticulture etc. day. Generally speaking a minimumtemperature occurs during the night and a maximum during the day. Six’s maximum and minimum thermometer. Subscribe Subscribed Unsubscribe 5. The thermometer is well made from quality materials and is simple and intuitive to use. A maximum-minimum thermometer works by registering the maximum and minimum temperatures over a certain time period by using two scales set in liquid mercury. The markers thus record the furthest point reached by the mercury in each arm of the tube, and thereby the highest and lowest temperatures since the last reset. 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