A thermometer is used to measure the temperature of a body. There are various types of thermometers, such as digital thermometers, infrared thermometers, and mercury thermometers.
Mercury thermometers are used to measure body temperature, room temperature, and other temperatures in a variety of settings. However, due to the toxicity of mercury, their use has decreased in favor of digital thermometers.
Mercury is a toxic heavy metal. The possibility of breakage and the subsequent release of mercury into the body, or into the environment, means that mercury usage has gradually been phased out in consumer thermometers. Laboratory thermometers often still contain mercury, since it's useful over a wide range of temperatures. This isn't so critical in medical thermometers, since the body temperature of someone who isn't actually dead is almost certainly going to be no more than 10 degrees from 37 Celcius.
If the bulb is red, blue, purple, green or any other color, it is not a mercury thermometer. Mercury thermometerscan be used to determine body temperature (fever thermometers), liquid temperature, and vapor temperature.
If the liquid is silver, it is liquid mercury (Hg). If the liquid is red, it is coloured ethyl alcohol (C2H5OH).
Digital and clinical thermometers are not necessarily the same. Digital thermometers can encompass a wider range of types, including both clinical and non-clinical variations. Clinical thermometers, on the other hand, are specifically designed for medical use to measure body temperature accurately.
Older thermometers took about a minute for the body temperature to warm the mercury in the glass bulb so that it reached body temperature and a reading could be taken. Modern thermometers are much faster and do not need to be kept for a minute.
Mercury is used in thermometers because mercury is the only liquid metal in room temperature. Hence our body temperature is observed by melting the liquid metal mercury due to our body temperature.
Mercury, if it enters your body, causes severe brain problems, and is usually deadly, so it is a poisonous material. it is no longer used in thermometers because thermometers were breaking and too many people were dying.
Clinical thermometers. They can be (and usually made) by glass hollow rods with mercury inside). So I would say 'no diiference' considering the fact that: A clinical thermometer made with glass and mercury inside. Now - a - days other types of thermometers are used (to avoid mercury). Some contains alcohol (for glass type), some are made up like robbons with censors implanted.
Mercury is no longer used much in thermometers due to the poisonous compounds that it forms. When I grew up, in Chemistry at school and at the doctors there were mercury thermometers and alcohol thermometers.
It is used in the thermometers as it detects the heat change.It points out the variation of temperature of human body.