What is the difference between a thermometer and a thermometer?

Difference Between Thermometer and Thermometer.

1.The temperature range is different.

2.The construction is different. The thin tube inside the thermometer is not straight. The mercury column does not descend after leaving the analyte. The normal one is straight, and the mercury column will drop after leaving the supplement.

3.Some ordinary thermometers are not mercury.

In fact, the principle is the same, except that the thermometer touches the body; The thermometer is in contact with air. In order to ensure the accuracy of body temperature measurement, a mercury thermometer is used, and a normal thermometer is alcohol.

Thermometers use mercury and are more sensitive than thermometers.

The scale of the thermometer is generally about 50 degrees from below zero to above zero, and the thermometer is mainly around the body temperature range such as more than 30-40.

The middle cavity of the thermometer, which records and maintains the highest temperature in history, is a non-linear relationship between time and temperature.

The displayed value of a normal thermometer is the current value.

There is an inverted ditch in the medical thermometer, which is used to prevent changes in the temperature of the ambient air after measuring the body temperature, so that the measured body temperature is not very accurate, so the doctor will shake the patient's body temperature a few times when measuring the patient's body temperature with the medical thermometer, just to throw the mercury back in the thermometer.

The mercury thermometer used for the experiment had nothing like it.

The mercury column does not drop after the thermometer leaves the body, and the thermometer can only measure the immediate temperature. In terms of range, the thermometer is relatively large, and the thermometer is small and not negative.

Different temperature-sensing materials, different scale ranges, different usage methods, and different internal structures.

A thermometer is a type of thermometer.

The thermometry range is relatively small, and the indexing is small.

First, the role is different:1. Thermometer:

A thermometer is used to measure the temperature of the human body.

2. Thermometer:

A thermometer is used to measure the ambient temperature.

Second, the measurement range is different:1. Thermometer:

The thermometer contains the range of changes in the temperature of the human body, usually 35 42 2, thermometer:

Thermometers usually contain a range of changes in air temperature, and the measurement range is relatively large.

The function of the thermometer.

A basal thermometer is used to measure the basal body temperature of the human body when it just wakes up in the morning. Basal body temperature is less affected by environmental factors, such as exercise or eating, than daily body temperature. This facilitates the detection of subtle daily changes in body temperature.

The minimum scale marked by the glass fever thermometer is; f (, basal thermometer needs to be at least; f (. Therefore, a glass base thermometer is sold separately from a general glass thermometer for fever. But all electronic thermometers have at least; f (so can be used as a base thermometer.

Some digital thermometers are specifically labeled as basic thermometers and have special features such as a large display, additional memory function, etc., or a sound that will guide them to the correct position.

Similarities:

Both are properties that make use of the thermal expansion and contraction of liquids.

Differences: 1. The graduation value of the two is different, the thermometer is usually 1, and the thermometer is.

2. The thermometer cannot leave the measured object during measurement, while the thermometer can leave the human body for reading due to its curved structure.

3. The measurement range of the two is different. The thermometer usually contains a range of changes in air temperature, and the measurement range is relatively large, while a thermometer contains a range of changes in the temperature of the human body, usually 35 42

4. The liquids used in the two are different, the temperature gas usually uses liquids such as kerosene and alcohol, while the thermometer uses mercury.

(1) The thermometer is generally used to measure body temperature, so the range is within the range of human body temperature, from 33 to 42 degrees, while the ordinary thermometer has different ranges according to the different liquids inside, such as kerosene can reach 300 degrees.

2) On the minimum scale, the ordinary thermometer will have different minimum scales according to different ranges, the minimum scale is large, the minimum scale is small, the minimum scale is small, and the minimum scale of the thermometer is degrees.

3) When measuring, the thermometer has a very fine structure behind the mercury bubble (the mercury flows in the past and will not return, and the maximum body temperature can be determined), so it should be shaken a few times before use, and the mercury should be thrown into the mercury bubble to be used again. Ordinary thermometers do not have this structure, so they can be used directly.

Similarities between experimental thermometers and thermometers:

1. The principle is the same: both thermometers and thermometers are made using the properties of liquid thermal expansion and contraction. When the temperature rises, the liquid inside the bubble expands and the liquid level rises. When the temperature drops, the liquid in the bubble shrinks and the liquid level drops.

2. All use Celsius temperature.

Differences between experimental thermometers and thermometers:

1. The range is different: the general range of the thermometer is -20 -110. Because the human body temperature range is generally between 35 -42, the range of the thermometer is 35 -42.

2. Different uses: The thermometer is used to measure the temperature of the room or a certain place, while the thermometer is used to measure the temperature of the human body.

3. The index value is different: the score value of the thermometer is 1, and the index value of the thermometer is.

4. The contents are different: the liquid in the thermometer is generally kerosene (generally dyed red for ease of observation), and the liquid in the thermometer is generally mercury.

5. Different structure: The basic structure of the thermometer is a uniform thin tube on the upper part of the glass bubble. When the thermometer leaves the human body, the mercury becomes cold and shrinks, and the mercury column does not have time to return to the glass bubble, so it is disconnected at the neck, which still indicates the temperature of the human body.

So the thermometer can leave the human body to read.

6. Different ways to use:

The experimental thermometer cannot leave the measured object to read, but the thermometer can leave the human body to read. The thermometer should be thrown down a few times with your hand before use, while other ordinary thermometers should not be shaken before use.

The thermometer is also known as the "medical thermometer".The working substance of the thermometer is mercury. Its vacuole volume is much larger than that of the thin tube above.

Due to the influence of body temperature, the mercury in the bubble produces a slight change, and the expansion of the mercury volume makes the length of the mercury column in the tube change significantly. The change in human body temperature is generally between 35 and 42, so the scale of the thermometer is usually 35 to 42, and the range of each degree is divided into 10 parts, so the thermometer can be accurate to 1 10 degrees. The lower part of the thermometer near the vacuole neck is a very narrow curved neck, when measuring the body temperature, the mercury in the vacuole, the heated volume expands, the mercury can rise from the neck part to a certain position in the tube, when the thermal equilibrium with the body temperature is reached, the mercury column is constant.

When the thermometer leaves the human body, the outside temperature is low, and the mercury shrinks in volume when it is cold, and it is disconnected in the narrow curved neck, so that the part of the mercury that has risen into the tube cannot be returned, and the height of the mercury column when it is in contact with the human body is still maintained. A thermometer is a maximum thermometer that records the highest temperature ever measured by the thermometer. After use, the thermometer should be "returned to the table", that is, the upper part of the thermometer should be held and thrown down forcefully, so that the mercury that has risen into the tube can return to the vacuole.

Other thermometers should never be shaken, which is a major difference between thermometers and other liquid thermometers.

A room thermometer measures room temperature, 0-100