What is the significance of Fahrenheit and what is the relationship between Fahrenheit and Celsius?

Actually, your question is a headache for physicists, let's look at its history first:

Fahrenheit temperature scale

In 1714, Daniel Gabriel Fahrenheit developed the Fahrenheit temperature scale, which provided a common standard for temperature measurements, allowing comparisons of temperature measurements in different places, at different times, and from person to person.

Farenheit had discovered that the height of the mercury column in a barometer changed with temperature, which prompted him to begin his research on mercury thermometers.

In 1714, he finally made the first glass mercury thermometer.

The scale of this thermometer is based on the earliest inscription scale (Fahrenheit scale) in history.

Originally, the Fahrenheit scale was chosen for a mixture of NH4Cl (ammonium chloride) and water at a temperature of 0°, while a human (his wife) had a temperature of 96°.

After that, the ice-water mixture is changed to 32° (i.e., the freezing point), and the temperature of the boiling point of water is 212°, and the middle is divided into 180 equal parts, each equal part represents 1 degree, which is the Fahrenheit temperature scale, which is represented by the symbol f.

In fact, it appeared in order to unify the temperature units in physics, hence the Fahrenheit scale (a commemoration of his contributions).

Let's look at the origin of "Celsius".

"Celsius" is a temperature scale widely used in the world, which was proposed by the Swedish astronomer Servis in the 18th century. He set the boiling point at one and the freezing point at zero degrees, between which it was divided into one hundred equal parts, and one equal part was divided into one degree. However, in use, people feel very inconvenient.

The following year, Cervis used the thermometer upside down. Two years later, the famous naturalist Lin Nai also used this kind of thermometer that turned the scale upside down, and declared in a letter: "I was the first to design a thermometer with the freezing point as zero and the boiling point as one."

This type of temperature gauge is still called the Celsius scale (also known as the percentage temperature scale). In order to commemorate Celvis, descendants used the first letter of his name "C" to denote it.

Celsius, denoted by the symbol " ", the conversion formula between Celsius and Fahrenheit is: 5(f-50) = 9(c-10) where f-Fahrenheit, c-Celsius.

In fact, it has an indispensable position for any physical unit, and the most obvious example is that the temperature units in some literature are not uniform, and later generations have to find the conversion connection between the units when they study in series, so it cannot be arbitrarily said to abolish the "useless" physical units. Although the thermodynamic unit in SI units is the Celsius scale, the Fahrenheit scale is still indispensable. (Of course, I'm only a high school student, so naturally I don't fully understand the significance of the Fahrenheit temperature scale).

For those of us who enjoy the convenience of modern science, there are indeed some physical units that we will not use in a lifetime, and we do not need to learn to use them, but for scientists, they have considerable scientific significance, and it is inconvenient for us to judge them.

Junior High School Physics] [Temperature and Thermometer] - The Emergence and Evolution of the Fahrenheit Temperature Scale.

F is the Fahrenheit temperature and C is the Celsius temperature.

After more than 30 years after the Fahrenheit thermometer was made, the Swede Cherseus improved the Wallenheitt thermometer in 1742 and his colleague Schlemmer reversed the values of the two temperature points (i.e., the boiling point is 100 degrees Celsius, and the freezing point is 0 degrees), and it becomes the percentage temperature, that is, the Celsius temperature, which is expressed by . Fahrenheit temperature is =9 5 +32, or =5 9 (-32).

Fahrenheit is a unit of measurement of temperature, named after the German Wallenheit. In 1714, he found that liquid metal mercury is more suitable for making thermometers than alcohol, and used mercury as the temperature measurement medium, invented the glass mercury thermometer, and selected the freezing point temperature of the mixture of ammonium chloride and ice water as the zero degree of the thermometer, and the temperature of the human body as 100 degrees of the thermometer. At standard atmospheric pressure, ice has a melting point of 32 degrees Fahrenheit and water has a boiling point of 212 degrees Fahrenheit, with 180 aliquots in the middle, each divided into 1 degree Fahrenheit.

The "Fahrenheit temperature scale" is one of the temperature scales for sleepy experience. In daily life in the United States, this temperature scale is mostly used.

Question 1: What does Fahrenheit mean It is a unit of temperature measurement, and there are two commonly used types: Fahrenheit and Celsius.

Question 2: What does Fahrenheit mean It is a unit of temperature measurement, and there are two commonly used types: Fahrenheit and Celsius.

Question 3: What does Fahrenheit mean? It is a unit of temperature measurement, and there are two commonly used at present: Fahrenheit and Celsius.

Question 4: What do Celsius and Fahrenheit mean? Celsius is a temperature scale widely used in the world The temperature measurement unit of the Celsius temperature scale is represented by the symbol "".

Refers to the temperature of the pure Huaiqian ice-water mixture at 1 standard atmospheric pressure of 0 degrees, the boiling point of water is 100 degrees, and the average division between them is 100 parts, each equal part is 1 degree, and is recorded as 1.

In 1724, the German Wallenheit formulated the Fahrenheit temperature scale, he set the temperature of a certain concentration of salt water when it solidified to 0h, the freezing point temperature of pure water (ice point) set to 32 h, and the boiling point temperature of water under standard atmospheric pressure was set to 212h, and the middle was divided into 180 equal parts, each equal part represented 1 degree.

Conversion: h=(9 5) 32.

Question 5: What is Fahrenheit temperature Fahrenheit temperature scale: The Dutchman Wallenheit set the temperature of a certain concentration of salt water when it solidifies to 0of, the temperature when pure water solidifies to 32 of, and the temperature at which water boils under standard atmospheric pressure is set to 212 of, and the use of means to represent the Fahrenheit temperature, which is the Fahrenheit temperature.

The relationship between Fahrenheit and Celsius is: of=(9 ding7; 5) ℃32。

Question 6: What does FC mean in thermometer? What is Fahrenheit and Celsius, and what is the difference? Fahrenheit and Celsius are both units used to measure temperature.

Fahrenheit is named after its inventor, Gabriel DNamed by Fahrenheir (1681-1736), its freezing point is 31°F and its boiling point is 212°F; The inventor of the Celsius was Anders Celsius (1701-1744), which had a freezing point of 0 ° C and a boiling point of 100 ° C.

At atmospheric pressure at sea level, the temperature of the ice-water mixture is set at zero degrees and the temperature of boiling water is set at one, and they are divided into 100 equal parts, each of which is a unit of Celsius, called 1 degree Celsius.

Conversion relationship: 32 degrees Fahrenheit

Question 7: What is Fahrenheit A unit of measurement for temperature f=32+ Fahrenheit is named after its inventor, the German Warren Hai (1681-1736). When the atmospheric pressure is, set the freezing point of water to 32 degrees and the boiling point of water to 212 degrees, and divide the temperature between 32 and 212 degrees into 180 equal parts, each equal part of which is 1 degree Fahrenheit.

The nature is different, it's Celsius, it's Fahrenheit.

Fahrenheit scale refers to the unit used to measure temperature. Fahrenheit = 32+ degrees Celsius. Fahrenheit is used in only five countries in the world, including the Bahamas, Belize, the British Cayman Islands, Palau, the United States of America and other dependent territories (Puerto Rico,**, U.S. Virgin Islands).

Under the atmospheric pressure of the standard Zhengzhun, the melting point of ice is 32, the boiling point of water is 212, and there are 180 equal parts in the middle, each equal is divided into 1 degree Fahrenheit, which is recorded as "1".

Temperature measurement method:

1. Contact temperature measurement method.

The characteristics of the contact temperature measurement method are that the temperature measuring element is in direct contact with the measured object, and the heat exchange between the two is fully carried out, and finally the thermal equilibrium is reached, and the value of a certain physical parameter of the temperature sensing element represents the temperature value of the measured object of Huisheng.

2. Non-contact temperature measurement method.

The non-contact temperature measurement method is characterized by the fact that the temperature sensing element is not in contact with the measured object, but carries out heat exchange through radiation, so the shortcomings of the contact temperature measurement method can be avoided and it has a high upper limit for temperature measurement. In addition, the thermal inertia of the non-contact thermometry method is small, up to 1 1000s, so it is convenient to measure the temperature and rapidly changing temperature of old objects before movement.

Equal to degrees.

Fahrenheit is a unit used to measure temperature. The vast majority of countries in the world, including our country, use the degree Celsius.

The conversion relationship between the Celsius scale (°C) and the Fahrenheit scale (°F) is:

f=c c=(f-32) For example:

100 degrees Fahrenheit ( ) Celsius ( ).

The Celsius scale (centigrade) and the Fahrenheit temperature scale (Fahrenheit) are two major international temperature measurement standards.

The Celsius temperature scale was proposed by the Swede Celius in 1740 to set the temperature of the ice-water mixture at 0 degrees Celsius and the boiling point of water to 100 degrees Celsius at standard atmospheric pressure. The temperature is indexed according to the two fixed temperature points of water.

100 equal divisions between two points, and the interval between each segment is called 1 degree Celsius, which is recorded as 1, so the English nuclear game of the grinding pin degree is called centigrade, which is represented by the symbol "C", and the unit is °C. Most countries, including China, use the Celsius temperature scale.

Slightly earlier than the Celsius scale, the Fahrenheit scale was created in 1714 by the German Fahrenheit, and the creation of the Fahrenheit scale played an important role in unifying the temperature units in physics. It is a mercury as a temperature measuring substance, the melting point of the ice is 32 degrees, the boiling point is 212 degrees, and the middle is divided into 180 degrees, which is represented by . Fahrenheit is currently mostly used in a few countries such as the United States.

There are generally two ways to express temperature, which are as follows:

Celsius, e.g. 38, is the temperature corresponding to c on the thermometer.

Fahrenheit, for example, is the temperature corresponding to f on a thermometer.

The conversion formula between the two: Fahrenheit ( ) 32 + Celsius ( ) temperature (temperature) is a physical quantity that indicates the degree of cold and heat of an object, and microscopically it is the intensity of the thermal motion of the molecules of the object. Temperature can only be measured indirectly by certain characteristics of an object as a function of temperature, and the scale used to measure the temperature value of an object is called a temperature scale.

It specifies the starting point (zero point) of the temperature reading and the basic unit for measuring the temperature. The SI unit is the thermodynamic temperature scale (k). At present, other temperature scales that are more used in the world are Fahrenheit (°F), Celsius (°C) and international practical temperature scales.

From the point of view of molecular motion theory, temperature is the indicator of the average kinetic energy of the molecular motion of an object. Temperature is the collective manifestation of the thermal motion of a large number of molecules and is statistically significant. For individual molecules, temperature is meaningless.

The degree of heat and coldness measured on one of several arbitrary scales based on an observable phenomenon (e.g., the expansion of a column of mercury).