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Why does a mercury-in-glass laboratory thermometer have a narrow capillary bore?
Wiki User
∙ 11y ago
To increase the sensitivity of the thermometer, that is, for the thermometer to respond quickly to small changes in temperature.
Wiki User
∙ 11y ago
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What is an effect that adhesion produces?
Adhesion produces capillary action. Capillary action is liquid's ability to flow in narrow spaces without external forces like gravity.
The force that draws water up narrow tubes against the force of gravity is a?
It is called capillary action
What we called the tendency of liquid molecules to rise spontaneously up tubes with narrow diameters?
That is capillary attraction.
Why are the thermometers called liquid in glass thermometers?
A so-called "glass" thermometer has a small bore-hole in the center of the glass that has some liquid in it. It's the activity of the liquid in the narrow hole that makes the thermometer a thermometer.
How does the size of capillary bore of a thermometer affect its accuracy?
As the temperature rises, the mercury expands into a narrow bore, because the volume of the mercury increases. If the bore is very narrow then the extra volume has to go a longer way up the bore to accomodate that volume, so it is more sensitive to small changes of temperature. And it is easier to spot small changes of temperature, and read them from the scale more accurately. But if the scale isn't marked accurately in the first place you are no better off.
What is a thermometer bore?
A bore refers to the extremely fine or narrow tube found in a thermometer. It is called a narrow bore or a capillary.
What is a narrow tube that is used as a metering device?
capillary tube
What is a capillary features?
A capillary has a very narrow lumn and very thin wall. These features maximize diffusion of nutrients, wastes, and oxygen.
Does liquid water rinse higher in a narrow tube or a wide tube?
You mean rise not rinse. Higher in a narrow tube due to capillary action.
What is an effect that adhesion produces?
Adhesion produces capillary action. Capillary action is liquid's ability to flow in narrow spaces without external forces like gravity.
Why is the bore of the capillary tube of a mercury thermometer made narrow?
Answer Vapour Pressure and Precisiondh25sThe vapour pressure of mercury (Hg) is low (0.0017 torr at 25 oC). The vapour pressure is dependent on temperature, thus what you want to measure. As the temperature increases, the vapour pressure increases and the mercury imbibes further up the capillary. If the capiallry radius were larger, the readings would be more difficult to see, i.e. the precision would decrease. Vapor pressure has nothing to do with how a Mercury thermometer works. As the temperature rises, the mercury expands into a narrow bore, because the volume of the mercury increases. If the bore is very narrow then the extra volume has to go a longer way up the bore to accomodate that volume, so it is more sensitive to small changes of temperature.
The force that draws water up narrow tubes against the force of gravity is a?
It is called capillary action
What we called the tendency of liquid molecules to rise spontaneously up tubes with narrow diameters?
That is capillary attraction.
How are polarity and cohesion involved in the capillary action of a plant?
It draws narrow tubes inside plant stems to get the water.
Describe what a blood capillary look likes?
A very narrow organic flexible tube
Why are the thermometers called liquid in glass thermometers?
A so-called "glass" thermometer has a small bore-hole in the center of the glass that has some liquid in it. It's the activity of the liquid in the narrow hole that makes the thermometer a thermometer.
What is a scientific term for the ability of water molecules to rise up a very narrow tube?
That's called - 'capillary action'.
