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Why in a clinical thermometer the bulb is not quite full of mercury at room temperature?
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Is thermometer a type of manometer?
Not quite; This is what the first source said about how a thermometer works; This liquid is sometimes colored alcohol but can also be a metallic liquid called mercury. Both mercury and alcohol grow bigger when heated and smaller when cooled. Inside the glass tube of a thermometer, the liquid has no place to go but up when the temperature is hot and down when the temperature is cold. In other words, the thermometer goes up or down due to the expansion of the alcohol or mercury due to the heat. After reviewing the second source, you will see that the columns go up and down due to the atmospheric pressure. If it goes up and down due to atmospheric pressure it is a manometer. A manometer does not work if it is not exposed to the atmosphere. A thermometer is sealed off to the outside. This is another reason why a thermometer is different from a manometer.
Thermometer is better than finger for assesing temperature in liquid why?
Because your finger doesn't give you a number for temperature. And also, if the liquid is quite warm, it can burn your finger obviously. The thermometer on the other hand is made to deal with extreme temperatures, unlike your finger. It gives a precise, almost accurate reading of the temperature.
Is Mercury a hard metal?
no, mercury is a liquid...... Not Quite... Mercury is not a liquid, it is an Element which is in the liquid STATE at what we call standard temperature and pressure. Mercury becomes a solid (freezes) at −38.83 °C and becomes a gas (boils) at 356.73 °C
Which metal can be quite poisonous when ingested?
Several are such as lead, but mercury (the only metal that is a liquid at room temperature) is very poisonous.
What metal does a thermometer contain?
Early thermometers, dating back over two hundred years BC (BCE), were made using air and water. Later, in the time of Galileo (16-1700s AD or CE), these devices were refined;Galileo used glass spheres containing alcohol to measure temperature, and today working 'Galileo' thermometers using alcohol-filled spheres suspended in water are available from retail outlets, mainly for ornamental use and as curiosities. They are attractive, though not to be considered especially accurate, and are more properly described as thermoscopes.The original commercially-available thermometers contained mercury. The mercury thermometer was first made by Prussian-born physicist and glass-blower, Daniel Fahrenheit in 1724. The specifically clinical thermometer was invented in 1866 by British physician, Sir Thomas Albutt.Electronic thermometers are commonly used now for clinical, industrial and domestic purposes; these produce a digital display and are safer and more accurate than the mercury-in-glass thermometers.The sale of mercury thermometers is banned in many countries and US states; this is causing quite a few problems because they are still required under many industrial and government standards worldwide.Resistance temperature detectors (RTDs) contain platinum, either in the form of wire or film. These thermometers also have a digital display.RTDs are highly accurate and are frequently used in testing the results of other thermometers to industrial standards.
What is the best thermometer to use on people?
An aural (in ear) thermometer is a good modern device, and measures the temperature in the outer ear. It is more expensive than a mercury clinical thermometer, but is simpler to prepare between patients, and completely avoids the problems of broken glass thermometers, and spilt mercury. Mercury clinical thermometers are however quite cheap.
Why there is kink in clinical thermometer?
In a normal clinical thermometer, the mercury moves up and down the capillary tube as the temperature changes and thus if you removed it from contact with the patient the reading would steadily fall as it cooed. As you need a clinical thermometer to give you a reading of the patients temperature even after it has been removed from the patient, you need to stop the mercury shrinking back into the reservoir. The 'kink' breaks the connection between the mercury in the capillary tube and the reservoir so the reading given is accurate. On the other hand before it can be used again the mercury in the capillary tube has to be vigorously shaken back into the reservoir.On a point of interest, clinical thermometers are getting very rare because they have been phased out due to concerns regarding mercury poisoning should they break in use.
Is mercury in a thermometer poisonous?
Yes, it's quite harmful for humans.
What happens when you touch thermometer Mercury?
It doesn't sound like a good idea to experiment with this - mercury is quite toxic.
Why mountaineers carry alcohol thermometer with them rather than mercury thermometer?
mercury freezes at -39 and alcohol can be used under weather.
Why is Mercury bad to use in thermometers?
Mercury works very well in thermometers. The problem is when the thermometer breaks: mercury is quite toxic.Mercury works very well in thermometers. The problem is when the thermometer breaks: mercury is quite toxic.Mercury works very well in thermometers. The problem is when the thermometer breaks: mercury is quite toxic.Mercury works very well in thermometers. The problem is when the thermometer breaks: mercury is quite toxic.
Is thermometer a type of manometer?
Not quite; This is what the first source said about how a thermometer works; This liquid is sometimes colored alcohol but can also be a metallic liquid called mercury. Both mercury and alcohol grow bigger when heated and smaller when cooled. Inside the glass tube of a thermometer, the liquid has no place to go but up when the temperature is hot and down when the temperature is cold. In other words, the thermometer goes up or down due to the expansion of the alcohol or mercury due to the heat. After reviewing the second source, you will see that the columns go up and down due to the atmospheric pressure. If it goes up and down due to atmospheric pressure it is a manometer. A manometer does not work if it is not exposed to the atmosphere. A thermometer is sealed off to the outside. This is another reason why a thermometer is different from a manometer.
Why does mercury have to be used in thermometer?
Thermometers don't have to use Mercury. But its thermal expansion, resistance to evaporation, and that it's a liquid in the most common temperature range on Earth makes it a tempting choice. Unfortunately, it's quite toxic, so manufacturers are moving to other, more environmentally friendly materials.
What is the difference between clinical and lab thermometer?
Mmmm you will know very quickly if asked to touch your toes while the thermometer is inserted - the difference will become quite plain! Clinical thermometers are calibrated to temepratures around that with which life revolves - there is no use having 100 degrees C on a clinical thermometer as you would be quite dead (and bubbling!) if you got that hot! Lab thermometers can look like Clinical thermometers - but can also be much larger, made of metal or glass or plastic, electronic, infrared, coated (teflon etc), and can have scales going up to many hundreds of degrees C (and down well below zero too).
Thermometer is better than finger for assesing temperature in liquid why?
Because your finger doesn't give you a number for temperature. And also, if the liquid is quite warm, it can burn your finger obviously. The thermometer on the other hand is made to deal with extreme temperatures, unlike your finger. It gives a precise, almost accurate reading of the temperature.
Can you use a regular thermometer to take the temperature of a young puppy?
Sounds like your baby needs to go back to the Doctor A.S.A.P.Puppies immune systems are not quite developed at this point, and your little one could be in jeapordy.It's O.k. to use a Regular Thermometer. If you are using a Mercury Thermometer, make sure you shake it.A normal Rectal Temperature is 100.5 to 102.5 Degrees Farhrenheit.Lubricate the thermometer with petrolium jelly like vasaline. You might like to get someone to help you hold your puppy at this point. Lift the tail and insert the thermometer SLOWLY AND CAREFULLY into the rectum. Insert the thermometer about 1 inch and hold in place for about 2 minutes, for the MERCURY THERMOMETER, or until the DIGITAL THERMOMETER BEEPS.If your dog has a body temperature LESS than 99 degrees or OVER 104 degrees Contact your Vet. A High temperature could mean your Dog has an infection or a heat related illness.If your dog has a below normal reading this can be just as serious, indicating other problems such as shock.
Temp of mercury?
The temperature of the planet Mercury ranges quite a lot. During the evening it is −287 degrees Fahrenheit and during the day it is 800 degrees Fahrenheit.
