The History of Measurement and Temperature

Read about the history of measurement units and the creation of different measurement systems. The reading goes into additional detail about temperature scales.


The Imperial Measuring System

 

The Imperial measurement system is a system of units that was used in the British Empire and its territories, including the United Kingdom, from the late 17th century until the late 20th century. The system was created as a way to standardize measurement and improve trade and commerce throughout the empire.

 

The origins of the Imperial system can be traced back to the late 17th century when the government of England commissioned a committee of experts to create a standardized system of weights and measures. The committee recommended a system that was based on the length of the human foot, which was divided into 12 inches, and the pound, which was divided into 16 ounces. This system was officially adopted as the standard system of weights and measures in England in 1824.

 

The Imperial system was then exported to other parts of the British Empire, including the United States, where it was used as the standard system of weights and measures until the late 19th century. The system became widely used throughout the empire and was seen as a symbol of British power and influence.

 

Despite its widespread use, the Imperial system was criticized for being too complex and for not having enough precision for scientific and industrial use. This led to the creation of the metric system, which was based on a decimal system and was seen as a more logical and accurate system of measurement.

 

In the late 19th and early 20th centuries, the British Empire began to adopt the metric system as its standard system of measurement. The transition to the metric system was slow and gradual, however, and the Imperial system remained in use in many parts of the empire for many years.

In the United Kingdom, the transition to the metric system was complete by the late 20th century, and the Imperial system was officially replaced as the standard system of measurement. The Imperial system is now used only in a few countries, such as the United States and Liberia, where it remains a part of their cultural heritage and history.

 

The Metric Measuring System

 

The metric system, also known as the International System of Units (SI), is a system of units that is used for scientific and industrial purposes throughout the world. The system was created in France in the late 18th century as a way to standardize measurement and improve trade and commerce.

 

The history of the metric system can be traced back to the French Revolution when the French government commissioned a committee of experts to create a standardized system of weights and measures. The committee recommended a system that was based on a decimal system and was easy to understand and use. This system, which was known as the metric system, was officially adopted as the standard system of weights and measures in France in 1795.

 

The metric system quickly gained popularity in France and other parts of Europe, and by the mid-19th century, it had become the standard system of weights and measures for scientific and industrial purposes throughout much of Europe. The system was seen as a more logical and accurate system of measurement than the traditional systems that were in use at the time, such as the Imperial system, which was used in the British Empire.

 

In the late 19th and early 20th centuries, the metric system was adopted by other countries, including the United States, as their standard system of measurement. The transition to the metric system was slow and gradual, however, and many countries continued to use their traditional systems of measurement for many years.

 

In the mid-20th century, the metric system was officially recognized as the International System of Units (SI) by the International Organization for Standardization (ISO). The ISO is a global organization that sets standards for measurement and other technical fields, and the recognition of the metric system as the International System of Units made it the standard system of measurement for scientific and industrial purposes throughout the world.

 

Today, the metric system is used by almost all countries for scientific and industrial purposes, and it is widely recognized as the most accurate and logical system of measurement. The system is based on a decimal system, which makes it easy to understand and use, and it has been widely adopted for scientific, industrial, and commercial purposes.

 

Early Temperature Measuring

 

Before the invention of the Fahrenheit and Celsius temperature scales, people used a variety of methods to measure temperature. One of the earliest methods was the use of thermal expansion, which involved observing how certain substances changed in size in response to changes in temperature.

 

For example, early temperature measurements were often made using alcohol-filled thermometers, which used the expansion of alcohol to measure temperature. This method was often inaccurate and inconsistent, however, as the expansion of alcohol varied with changes in pressure and other factors.

 

Another method used before the Fahrenheit scale was the use of mercury in thermometers. Mercury has a relatively low coefficient of thermal expansion, which made it a useful material for temperature measurement. However, like alcohol-filled thermometers, mercury thermometers were often inaccurate and inconsistent due to variations in pressure and other factors.

 

In addition to these early methods, the temperature was also measured using various methods based on the properties of air, such as the use of hot-air balloons, which measured the temperature of the air as it expanded and rose into the atmosphere.

 

Despite these early methods, temperature measurement was often inaccurate and inconsistent, making it difficult to compare temperatures across different locations and times. It was not until the invention of the Fahrenheit temperature scale in the 18th century that temperature measurement became more accurate and consistent, allowing for the comparison of temperatures across different locations and times.

 

The Invention of Fahrenheit

 

The Fahrenheit temperature scale was created by a German physicist named Daniel Gabriel Fahrenheit in 1724. Prior to the invention of the Fahrenheit scale, temperature measurement was done using a variety of systems, including the use of mercury in thermometers. However, these methods were often inaccurate and inconsistent, making it difficult to compare temperatures across different locations and times.

 

Fahrenheit set out to create a more accurate and consistent temperature measurement system that would allow for the comparison of temperatures across different locations and times. He created the Fahrenheit temperature scale by using a mixture of ice, water, and salt to define the lower and upper limits of the scale. He set the freezing point of water as 32°F and the boiling point of water as 212°F.

 

The Fahrenheit scale was quickly adopted by scientists and engineers in Europe and the United States and became the standard temperature measurement system in the United States until the late 19th century. However, the Fahrenheit scale was criticized for being too complex and for not having enough precision for scientific and industrial use.

 

In the late 19th century, the Celsius temperature scale was introduced and quickly gained popularity as the standard temperature measurement system for scientific and industrial use. The Celsius scale is based on the metric system and sets the freezing point of water at 0°C and the boiling point of water at 100°C.

 

Despite the adoption of Celsius, the Fahrenheit scale is still used today in the United States, its territories, Liberia, and the Cayman Islands for everyday temperature measurements. It is considered to be a part of American culture and history, and it is still taught in school along with Celsius. The Fahrenheit scale remains an important part of the history of temperature measurement and continues to be used by millions of people.

 

The Rise of Celsius

 

The Celsius temperature scale was created by a Swedish astronomer named Anders Celsius in 1742. Prior to the invention of the Celsius scale, temperature measurement was done using a variety of systems, including the Fahrenheit scale, which had been introduced a few decades earlier. However, the Fahrenheit scale was criticized for being too complex and for not having enough precision for scientific and industrial use.

 

Celsius set out to create a more accurate and consistent temperature measurement system that would be easier to use for scientific and industrial purposes. He created the Celsius temperature scale by setting the freezing point of water at 0°C and the boiling point of water at 100°C. This simple and intuitive system quickly gained popularity among scientists and engineers, who found it to be more useful for scientific and industrial purposes than the Fahrenheit scale.

 

The Celsius scale was first adopted in Sweden, where it quickly became the standard temperature measurement system. Over the next few decades, the Celsius scale gained popularity in other parts of Europe and eventually became the standard temperature measurement system for scientific and industrial use throughout the world.

 

One of the reasons for the widespread adoption of the Celsius scale was its simplicity and ease of use. Unlike the Fahrenheit scale, the Celsius scale was based on the metric system, which made it easier to understand and use for scientific and industrial purposes. In addition, the Celsius scale was more precise than the Fahrenheit scale, making it better suited for scientific and industrial use.

 

Despite its widespread adoption, the Celsius scale has not completely replaced the Fahrenheit scale. The Fahrenheit scale remains in use in the United States, where it is considered to be a part of American culture and history, and is used for everyday temperature measurements.

From Lesson: Measurement and Temperature

Learning Gig Lesson List:

From Learning Gig: The Basics of Measurement Systems

Processing ... Please wait