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Why does a mercury-in glass thermometer first drop slightly when placed in boiling water?
When placed in boiling water, the materials comprising the thermometer respond in the order in which the heat penetrates them. As the heat first permeates the glass cylinder, the cylinder expands, enlarging the bore. For the moment until the mercury is also heated, the constant volume of mercury fills the expanded bore to a slightly lower depth. When the heat reaches the mercury and it also expands, its volume to increase, and the liquid depth rises in the bore.
What happens to the thermometer when it enters in cold water?
When a thermometer enters cold water, the temperature reading on the thermometer will decrease as the thermometer adjusts to the temperature of the water. The liquid inside the thermometer will contract and move down the scale, indicating the lower temperature of the cold water.
How do you verify ice point of mercury thermometer?
To verify the ice point of a mercury thermometer, place the thermometer in a mixture of crushed ice and water, stirring gently. Allow the thermometer to stabilize for a few minutes, ensuring the mercury column remains constant. The temperature indicated by the thermometer should match the expected ice point of 0°C (32°F).
Why must the bulb of the thermometer be submerged in the water?
The bulb of the thermometer must be submerged in the water because that is where the temperature of the water is accurately measured. The bulb is the part of the thermometer that contains the temperature-sensitive material, such as mercury or alcohol, which expands or contracts depending on the temperature of the water. This expansion or contraction is then displayed on the thermometer scale, giving an accurate reading of the water temperature.
Who invented the mercury thermometer and why?
The mercury thermometer was invented Daniel Gabriel Fahrenheit in 1714. It was so that common temperatures could be measured. Fahrenheit was a physicist with a special interest in thermometry - the measure of temperature and heat.
Why does mercury level goes down for a very short time when a mercury-in glass thermometer is placed in hot water?
The exterior of the bulb of the thermometer expands first, resulting in the mercury level to go down. After that the mercury in the bulb expands more than the glass bulb, resulting in the subsequent rise of the mercury level.
Which thermometer is most suitable for measuring boiling point of water mercury or alcholic thermometer?
Which thermometer is most suitable for measuring boiling point of water mercury or alcoholic thermometer
What happen to the mercury when the bulb placed in hot water?
When a thermometer bulb containing mercury is placed in hot water, the mercury inside expands, causing the level of mercury to rise. This expansion of mercury is used to measure the increase in temperature accurately.
Why does a mercury-in glass thermometer first drop slightly when placed in boiling water?
When placed in boiling water, the materials comprising the thermometer respond in the order in which the heat penetrates them. As the heat first permeates the glass cylinder, the cylinder expands, enlarging the bore. For the moment until the mercury is also heated, the constant volume of mercury fills the expanded bore to a slightly lower depth. When the heat reaches the mercury and it also expands, its volume to increase, and the liquid depth rises in the bore.
What is the most suitable thermometer for measuring boiling point of water?
A digital thermometer with a range of up to 100 degrees Celsius and high accuracy would be most suitable for measuring the boiling point of water. It should be able to quickly and accurately display the temperature at which water boils, which is 100 degrees Celsius at sea level.
When was the did the water thermometer invented?
i think you mean a mercury theremometer
What does a thermometer contain water or Mercury?
If it's a silver liquid it's mercury, if it's red it's alcohol (not water)
What would you measure water temperature with?
A mercury thermometer (but not a medical one!)
Why is alcohol and mercury in liquid thermometer than water?
Water freezes at too high a temperature.
What will the mercury thermometer show when it is kept in ice?
The question must be asked carefully. If the thermometer is in water ice and there is no liquid water, and there is one atmosphere of pressure, the thermometer can read anything from the freezing point of water and lower, depending on the range of the thermometer. If the thermometer is in a stable mix of water and ice, it will read the freezing point of water.
What happens to the thermometer when it enters in cold water?
When a thermometer enters cold water, the temperature reading on the thermometer will decrease as the thermometer adjusts to the temperature of the water. The liquid inside the thermometer will contract and move down the scale, indicating the lower temperature of the cold water.
How do you verify ice point of mercury thermometer?
To verify the ice point of a mercury thermometer, place the thermometer in a mixture of crushed ice and water, stirring gently. Allow the thermometer to stabilize for a few minutes, ensuring the mercury column remains constant. The temperature indicated by the thermometer should match the expected ice point of 0°C (32°F).
