Table of Contents
- 1 Why the wall of the bulb of thermometer is made thin?
- 2 Why is the tube of a thermometer so narrow?
- 3 Why does a thermometer have a large bulb and a thin tube?
- 4 Why thermometer has thick walls on its stem?
- 5 Why is capillary tube narrow in the laboratory thermometer?
- 6 Why does liquid inside the tube of a thermometer go up and down?
- 7 Why is the glass bore stem of thermometer round and thick?
- 8 How does a larger bulb affect a thermometer?
- 9 Why is the bulb of thermometer made of thin glass?
- 10 Why is the tube in the thermoniter made very narrow?
Why the wall of the bulb of thermometer is made thin?
its made of glass with very thin walls to allow the heat from sample being measured to reach the liquid quickly for fast response and quick reading (improves the quickness of response by the thermometer). — has a vacuum above the liquid column so there is no resistance to the expanding liquid.
Why is the tube of a thermometer so narrow?
The narrow bore of te capillary tube makes the thermometer more sensitive. This is because a small expansion of the mercury in the bulb will cause a big change in the length of the mercury thread. The bulb is made of thin glass so that heat can be conducted quickly to the liquid.
Why is a thermometer so thin?
The tube in the thermometer that contains the red liquid is very thin so that it is easier to see the liquid move up and down. Since the volume of the liquid only increases or decreases a small amount when heated or cooled, it would be harder to see these changes if the tube was wider.
Why does a thermometer have a large bulb and a thin tube?
Bulb thermometers rely on the simple principle that a liquid changes its volume relative to its temperature. In these cases, the change in volume is fairly small. All bulb thermometers use a fairly large bulb and a narrow tube to accentuate the change in volume.
Why thermometer has thick walls on its stem?
The stem has a thick wall because it has mercury inside it so when the the temperature rises the mercury bounces inside the thermometer.
What is the purpose of making the capillary tube as thin as possible in a laboratory thermometer?
Laboratory thermometer consists of a bulb with a long capillary tube. The wall of the bulb is made thinner and the capillary tube is made narrower to make the thermometer more sensitive. Mercury thermometer expands and contracts according to the rise or fall in temperature.
Why is capillary tube narrow in the laboratory thermometer?
The liquid is contained in a thin-walled glass bulb. The bulb is made relatively larger than its bore to contain more of the liquid, so as to improve sensitivity. The narrow bore of the capillary tube is uniform. The round glass stem around the capillary tube is made thick.
Why does liquid inside the tube of a thermometer go up and down?
When heated, the molecules of the liquid in the thermometer move faster, causing them to get a little further apart. This results in movement up the thermometer. When cooled, the molecules of the liquid in the thermometer move slower, causing them to get a little closer together.
What does narrow inner tube in thermometer is called?
Why is the glass bore stem of thermometer round and thick?
The liquid is contained in a thin-walled glass bulb. The bulb is made relatively larger than its bore to contain more of the liquid, so as to improve sensitivity. The round glass stem around the capillary tube is made thick. It acts as a magnifying glass.
How does a larger bulb affect a thermometer?
So with a larger bulb, the mercury would expand further up the capillary with the same change in temperature. In this sense, yes, the bigger bulb would make the range increase.
What is capillary tube in laboratory thermometer?
capillary tube – a tube of small internal diameter; holds liquid by capillary action. capillary, capillary tubing. thermometer – measuring instrument for measuring temperature. tube, tubing – conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases.
Why is the bulb of thermometer made of thin glass?
The bulb thermometer is made of thin glass so as to detect the slightest change in temperature. It is made of thin glass for visibility as well. So the we’ll be able to see inside it. Q: Why is the bulb of thermometer made of thin glass?
The narrow bore of te capillary tube makes the thermometer more sensitive. This is because a small expansion of the mercury in the bulb will cause a big change in the length of the mercury thread. The bulb is made of thin glass so that heat can be conducted quickly to the liquid.
Why is the tube in the thermoniter made very narrow?
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. Why is the bulb in a thermoniter important?
How is a thermometer made to be portable?
The thermometer is made relatively small so that it is portable and cheap. The liquid is contained in a thin-walled glass bulb. The bulb is made relatively larger than its bore to contain more of the liquid, so as to improve sensitivity. The narrow bore of the capillary tube is uniform.