Why is
mercury
used in thermometers despite being the poorest conductor of heat
Which metal is used in thermometer?
Mercury
is a metal which exists in liquid form at room temperature . It is a shiny liquid metal with a high coefficient of expansion. It also has a high boiling point which is suitable for measurement of higher temperatures. Therefore, mercury is the metal used in the bulb of the thermometer.
Which metal is used in the bulb of clinical thermometer?
Answer: a)
Mercury
is the metal is used in the bulb of clinical thermometer.
Which mercury is used in clinical thermometer?
A clinical thermometer is used to measure human body temperature. It consists of a long glass tube which is graduated. A thermometric liquid is present within the tube which expands proportionally to temperature,hence measures it.
Which chemical is used in clinical thermometer?
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.
Which metal is used in mercury thermometer?
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.
Which one is filled in thermometer?
Mercury
is filled in the bulb of a thermometer .
Which metal is used in the bulb?
This heats up when an electric current passes through it and produces light as a result. Incandescent light bulbs have filaments which are made mainly from the
element tungsten
, the metal element used for the filaments in incandescent light bulbs.
What is the range of clinical thermometer?
2) Range of Clinical Thermometer is
35°C to 42°C
and laboratory thermometer is -10 ̊C to 110 ̊C.
What precautions should we take while reading a clinical thermometer?
Precautions while using clinical thermometer – definition
Ensure that before use the mercury level is below 35 ∘C. Read the thermometer keeping the level of mercury along the line of sight.
Handle the thermometer with care
, as you handle any glass articles. Dont hold the thermometer by the bulb while reading it.
Why is mercury used in a clinical thermometer?
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.
Why mercury is filled in the clinical thermometer?
It is used in thermometers because
it has a high coefficient of expansion
which makes it easy to move in the thermometers as per the temperatures. Mercury has a boiling point which makes it suitable to measure higher temperatures.
What is difference between laboratory and clinical thermometer?
| Clinical Thermometer Laboratory thermometer | Used to measure human body temperature Used to measure temperature in the laboratory | It has kink, which prevents immediate backflow of mercury It does not have a kink |
|---|
What is clinical thermometer explain with diagram?
: a
thermometer for measuring body temperature that
has a constriction in the tube above the bulb preventing movement of the column of liquid downward once it has reached its maximum temperature so that it continues to indicate the maximum temperature until the liquid is shaken back down into the bulb.
What are the types of clinical thermometer?
- Digital thermometers. …
- Ear (or tympanic) thermometers. …
- Infared thermometers. …
- Strip-type thermometers. …
- Mercury thermometers.
Which thermometer do doctors use?
Once a staple in most medicine cabinets,
mercury thermometers
use mercury encased in glass to measure body temperature.
