Mercury is used in thermometers becauseIt does not stick to the glass tube .It expands on providing heat to it.It has lower freezing point and higher boiling point.It is a shining metal and when it expands, the expansion can be easily seen.
Glass has a very low coefficient of thermal expansion . This is the reason why thermometer bulb or for a matter of fact entire thermometer is made up of glass. Due to low coefficient of thermal expansion, when the thermometer undergoes a large temperature change it will have minimal change in dimensions.
Mercury is the only one in liquid state at room temperature. Due to its high coefficient of expansion, mercury is used in thermometers.
Mercury is one of the most familiar materials used in liquid thermometers. Other liquids, such as kerosene or ethanol , may also be used in these types of thermometers.May 19, 2022
Spirit thermometers use a non-toxic alcohol instead of mercury to register the temperature.
Mercury is a gas which can flow . Mercury is a liquid which can flow but sticks to the glass. Mercury is a liquid which can flow but does not stick to the glass.
It consists of mercury as a liquid filled in a glass tube. On the body of the glass tube, calibrated marks are provided which facilitates the reading of temperature. A bulb is formed at one end of the thermometer which contains the largest part of mercury.
The main parts of a mercury thermometer are the capillary, the bulb, the scale, and the expansion chamber .
The tube of the thermometer is fixed on a mount .Dec 1, 2021
1) The tube of the thermometer is fixed on mount . The substance which is used in the thermometer is either mercury or alcohol. 3) The figures on the scale indicate the scales of the temperature. The units in which temperature is measured are degree Celsius indicated by C and degree Fahrenheit indicated by F.Nov 23, 2020
You'll need an oral thermometer , used in the mouth. If you've been eating or drinking, wait 30 minutes before you take a temperature by mouth. Turn on the digital thermometer.
The liquid used can be pure ethanol, toluene, kerosene or isoamyl acetate , depending on manufacturer and working temperature range. Since these are transparent, the liquid is made more visible by the addition of a red or blue dye.
The most commonly used liquid is mercury . The range of mercury thermometer is 390C−3570C.
In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.
Mercury is the element used in the thermometers due to various reasons such as; Liquid at room temperature.
Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer.Feb 11, 2007
Uses of Mercury Because of its high-density mercury used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, mercury relays, fluorescent lamps and other devices .
Mercury has fascinated people for millennia, as a heavy liquid metal. However, because of its toxicity, many uses of mercury are being phased out or are under review. It is now mainly used in the chemical industry as catalysts . It is also used in some electrical switches and rectifiers.
Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion . Hence, the slightest change in temperature is notable when it's used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.Feb 11, 2007
In many civilizations mercury was used to placate or chase away evil spirits . The alchemists thought that mercury, which they associated with the planet Mercury, had mystical properties and used it in their attempts to transmute base metals into gold. The Greeks knew of mercury and used it as a medicine.
Mercury is one of the most familiar materials used in liquid thermometers. Other liquids, such as kerosene or ethanol , may also be used in these types of thermometers.
Mercury is liquid at room temperature and it is also sensitive to temperature so it is used in thermometer .
Elemental or metallic mercury is used in mercury thermometers and (in combination with silver and other metals) in dental amalgam. In China, dental amalgam was used to fill teeth over 1000 years ago (cited in Drexler 1998). Inorganic mercury, e.g. mercury chloride, has been used as a disinfectant.
Out of the given options mercury satisfies all these conditions . Mercury is the only metal which exists in liquid form at room temperature. It is a shiny liquid metal with a high coefficient of expansion.
The more modern thermometer was invented in 1709 by Daniel Fahrenheit. It was an enclosed glass tube that had a numerical scale, called the Fahrenheit scale. The early version of this thermometer contained alcohol and in 1714 Fahrenheit developed a mercury thermometer using the same scale.
Galinstan metal alloy and other liquid metals In 2003, ¼ of silvery thermometers use galinstan instead of mercury. Any alloy containing gallium in a concentration of 65-95 wt. -%, indium in a concentration of 5-22 wt.