Why the metric system matters - Matt Anticole

TED-Ed
21 Jul 201605:07

Summary

TLDRThe script explores the French Revolution's pivotal role in creating the metric system, which aimed to standardize measurements for all people, all times. It discusses the political and social motivations behind the metric system's adoption, its challenges during implementation, and its eventual global spread. The narrative also highlights the United States' resistance to metrication, despite its near-universal use in science and medicine, and concludes with the ongoing evolution of measurement standards based on universal constants.

Takeaways

  • 📏 The French Revolution led to the creation of the metric system as a part of societal transformation based on Enlightenment principles.
  • 🌏 The metric system aimed to standardize measurements globally, replacing local and arbitrary units with mathematical and natural relationships.
  • 🏛️ The meter was defined based on a fraction of the Earth's quadrant, showcasing a scientific approach to measurement.
  • 💡 The metric system had political advantages, aiding in fair taxation and reducing the power of the church through the adoption of a new calendar.
  • 🔄 Adoption of the metric system was initially messy, with old and new units being used concurrently, and the new calendar eventually being abandoned.
  • 👑 Napoléon Bonaparte allowed the use of traditional measurements redefined in metric terms, maintaining the metric system for formal use.
  • 🌍 The metric system spread across Europe and the world through colonial empires and international trade, despite some countries reverting to old measurements upon independence.
  • 🇬🇧 Britain, as France's rival, resisted the metric system but eventually transitioned to it over two centuries, making it official after initially approving it as an alternative.
  • 🏴󠁧󠁢󠁥󠁮󠁧󠁿 The United States, having gained independence, retained English units and remains one of the few countries not fully embracing the metric system.
  • 🤔 Despite efforts for metrication, many Americans find U.S. customary units more intuitive and associate the metric system with global conformity.
  • 🔬 The metric system is universally used in science and medicine and continues to evolve, transitioning from physical prototypes to standards based on universal constants.

Q & A

  • What was the connection between the French Revolution and NASA's Mars orbiter crash?

    -The Mars orbiter crash was due to an error in converting between U.S. customary units and the metric system, which was established during the French Revolution as a part of their societal transformation efforts.

  • Why was there a need for a standardized measurement system in France during the French Revolution?

    -There were a quarter million different units in France alone, and the French Revolution aimed to transform society according to rational principles, which included standardizing measurements to eliminate local variations and arbitrary authority.

  • How did the French Revolution's emphasis on rational principles influence the development of the metric system?

    -The new government sought to replace old standards based on local traditions with mathematical and natural relationships, defining units like the meter based on the Earth's dimensions and aiming for a system 'for all people, for all time'.

  • What political advantages did the metric system offer to the French Revolutionaries?

    -Standardizing measurements helped prevent nobles from manipulating local units to extract more rent, and it allowed the government to collect taxes more efficiently. Additionally, the new Republican Calendar reduced church power.

  • How did the adoption of the metric system initially proceed in France?

    -Adoption was initially messy, with people using new units alongside old ones. The Republican Calendar was eventually abandoned, but the metric system remained standard for formal use.

  • What was Napoléon Bonaparte's stance on the use of traditional measurements?

    -Napoléon allowed small businesses to use traditional measurements, but redefined in metric terms, thus maintaining the metric system as the standard for formal use.

  • How did the metric system spread across Europe and the world?

    -The metric system spread with France's borders and was adopted by other nations, especially after Portugal and the Netherlands switched to it voluntarily, and colonial empires helped spread the system globally.

  • Why did Britain resist the metric system for so long?

    -Britain resisted the metric system as it was seen as a revolutionary idea from France, their main rival, and they retained their traditional units. However, they eventually transitioned to the metric system over two centuries.

  • What is the current status of the metric system in the United States?

    -The United States remains one of only three countries that haven't fully embraced the metric system, sticking with the English units of its colonial past.

  • How is the metric system perceived by some Americans, and why?

    -Some Americans consider units like feet and pounds more intuitive and ironically regard the once revolutionary metric system as a symbol of global conformity.

  • How has the definition of standard units in the metric system evolved over time?

    -Standard units were once defined by physical prototypes, but with improving technology and precision, these are now being replaced with standards based on universal constants, like the speed of light.

Outlines

00:00

🌍 The Impact of the French Revolution on Measurement Systems

This paragraph discusses the connection between the French Revolution and the crash of a NASA orbiter due to a measurement error. It explains how the revolution led to the creation of the metric system as a response to the chaos of varying units and number systems. The Academy of Sciences was tasked with establishing a new, rational system of measurements based on mathematical and natural relationships, such as defining the meter as one ten-millionth of the distance from the equator to the North Pole. This system was intended to be universal and was seen as having political benefits for the revolutionaries, such as preventing nobles from exploiting local units for rent and allowing for more efficient tax collection.

Mindmap

Keywords

💡French Revolution

The French Revolution, which began in 1789, was a period of radical social and political change in France that led to the collapse of the monarchy and the rise of radical political factions. In the context of the video, it is significant because it led to the establishment of the metric system as part of the revolution's efforts to standardize and rationalize society according to Enlightenment principles.

💡NASA

The National Aeronautics and Space Administration (NASA) is the United States government agency responsible for the nation's civilian space program and for aeronautics and aerospace research. The video mentions NASA in the context of a $200 million orbiter that was accidentally crashed into Mars due to a measurement error, highlighting the importance of standardized units in scientific endeavors.

💡Measurement Systems

Measurement systems refer to the standards used to quantify physical properties such as length, weight, and time. The video script discusses the historical lack of standardization in measurement systems, which led to confusion and inefficiency, and how the French Revolution sought to address this by introducing the metric system.

💡U.S. customary units

U.S. customary units are a system of measurement used in the United States, which includes units like inches, feet, and pounds. The script mentions this system in relation to the Mars orbiter crash, illustrating the potential for error when different measurement systems are used, particularly in high-stakes scientific and technological contexts.

💡Metric System

The metric system is an internationally recognized decimal system of measurement that was introduced during the French Revolution. Defined by the meter and the kilogram, it is based on mathematical and natural relationships. The video emphasizes the metric system's role in facilitating global scientific communication and standardization.

💡Enlightenment

The Enlightenment was an intellectual and philosophical movement in the 18th century that emphasized reason, individualism, and the scientific method. The video script notes that the French Revolution sought to transform society according to the rational principles of the Enlightenment, which included the creation of the metric system.

💡Academy of Sciences

The Academy of Sciences, in the context of the video, refers to the French organization that was tasked with reforming the system of measurements during the French Revolution. This reform led to the development of the metric system, which was intended to be universal and based on natural constants.

💡Marquis de Condorcet

The Marquis de Condorcet was a French philosopher and mathematician who played a significant role in the development of the metric system. The video quotes him as describing the metric system as 'For all people, for all time,' highlighting the intended universality and timelessness of the system.

💡Republican Calendar

The Republican Calendar was a calendar system introduced during the French Revolution, which included ten-day weeks to reduce the influence of the church. The video mentions this as an example of the revolutionary government's efforts to standardize and rationalize all aspects of society, including time.

💡Napoléon Bonaparte

Napoléon Bonaparte was a French military and political leader who rose to power after the French Revolution. The video notes that under his rule, traditional measurements were allowed for small businesses but redefined in metric terms, indicating a continued commitment to the metric system despite some concessions to tradition.

💡Global Conformity

Global conformity refers to the adoption of uniform standards or practices worldwide. The video script ironically notes that some Americans view the metric system, which was once a symbol of revolutionary change, as a symbol of global conformity, reflecting the tension between national identity and international standardization.

💡Universal Constants

Universal constants are physical quantities that are the same throughout the universe, such as the speed of light. The video mentions that the metric system is evolving to be based on these constants rather than physical prototypes, which enhances the precision and reliability of measurement standards.

Highlights

The French Revolution led to the creation of the metric system to standardize measurements and promote rational principles of the Enlightenment.

Before the metric system, there were over 250,000 different units in France, leading to the need for a major disruption in measurement standards.

The meter was defined as 1/10,000,000th of the distance between the Equator and the North Pole, establishing a natural and mathematical basis for measurement.

The metric system had political advantages for the French Revolutionaries, as it prevented nobles from manipulating local units to extract more rent and allowed the government to collect taxes more efficiently.

The adoption of the metric system was initially met with resistance and confusion, with people using both new and old units simultaneously.

Napoleon Bonaparte allowed small businesses to use traditional measurements redefined in metric terms, helping the metric system to gradually become the standard.

The metric system spread across Europe and the world, as countries realized the value of standardization in the age of international trade.

Britain initially resisted the metric system, but eventually transitioned to it over two centuries, first as an optional alternative and then making it official.

The United States, as a former British colony, has not fully embraced the metric system and remains one of only three countries that still use English units.

Despite efforts for metrication in the U.S., many Americans find units like feet and pounds more intuitive and associate the metric system with global conformity.

The metric system is universally used in science and medicine and continues to evolve according to its original principles.

Standard units were once defined by physical prototypes, but are now being replaced with standards based on universal constants like the speed of light, thanks to technological advancements.

The development of consistent measurement systems is a major accomplishment for humanity, arising from political revolutions and remaining crucial for future scientific revolutions.

The NASA Mars Orbiter crash was a result of an error in converting between U.S. customary units and the metric system, highlighting the importance of standardized measurements in space exploration.

The metric system's creation and adoption demonstrate the power of standardization to transform society and facilitate international cooperation.

The metric system's history shows the interplay between political, social, and scientific factors in shaping measurement standards and their global impact.

Transcripts

play00:06

What does the French Revolution

play00:08

have to do with the time NASA accidentally crashed a $200 million orbiter

play00:14

into the surface of Mars?

play00:17

Actually, everything.

play00:19

That crash happened due to an error

play00:21

in converting between two measurement systems,

play00:24

U.S. customary units

play00:26

and their S.I, or metric, equivalence.

play00:29

So what's the connection to the French Revolution?

play00:31

Let's explain.

play00:33

For the majority of recorded human history,

play00:35

units like the weight of a grain or the length of a hand weren't exact

play00:40

and varied from place to place.

play00:42

And different regions didn't just use varying measurements.

play00:45

They had completely different number systems as well.

play00:49

By the late Middle Ages, the Hindu-Arabic decimal system

play00:52

mostly replaced Roman numerals and fractions in Europe,

play00:56

but efforts by scholars like John Wilkins to promote standard decimal-based measures

play01:01

were less successful.

play01:03

With a quarter million different units in France alone,

play01:06

any widespread change would require massive disruption.

play01:11

And in 1789, that disruption came.

play01:14

The leaders of the French Revolution didn't just overthrow the monarchy.

play01:19

They sought to completely transform society

play01:22

according to the rational principles of the Enlightenment.

play01:25

When the new government took power,

play01:27

the Academy of Sciences convened to reform the system of measurements.

play01:32

Old standards based on arbitrary authority or local traditions

play01:37

were replaced with mathematical and natural relationships.

play01:41

For example, the meter, from the Greek word for measure,

play01:44

was defined as 1/10,000,000 between the Equator and North Pole.

play01:49

And the new metric system was, in the words of the Marquis de Condorcet,

play01:53

"For all people, for all time."

play01:57

Standardizing measurements had political advantages

play02:00

for the Revolutionaries as well.

play02:03

Nobles could no longer manipulate local units to extract more rent from commoners,

play02:08

while the government could collect taxes more efficiently.

play02:12

And switching to a new Republican Calendar with ten-day weeks

play02:15

reduced church power by eliminating Sundays.

play02:20

Adoption of this new system wasn't easy.

play02:22

In fact, it was a bit of a mess.

play02:25

At first, people used new units alongside old ones,

play02:29

and the Republican Calendar was eventually abandoned.

play02:32

When Napoléon Bonaparte took power,

play02:34

he allowed small businesses to use traditional measurements

play02:38

redefined in metric terms.

play02:40

But the metric system remained standard for formal use,

play02:43

and it spread across the continent, along with France's borders.

play02:48

While Napoléon's empire lasted eight years,

play02:50

its legacy endured far longer.

play02:53

Some European countries reverted to old measurements upon independence.

play02:58

Others realized the value of standardization

play03:01

in an age of international trade.

play03:03

After Portugal and the Netherlands switched to metric voluntarily,

play03:08

other nations followed,

play03:09

with colonial empires spreading the system around the world.

play03:14

As France's main rival,

play03:15

Britain had resisted revolutionary ideas and retained its traditional units.

play03:21

But over the next two centuries, the British Empire slowly transitioned,

play03:25

first approving the metric system as an optional alternative

play03:28

before gradually making it offical.

play03:31

However, this switch came too late for thirteen former colonies

play03:35

that had already gained independence.

play03:38

The United States of America stuck with the English units of its colonial past

play03:42

and today remains one of only three countries

play03:45

which haven't fully embraced the metric system.

play03:48

Despite constant initiatives for metrication,

play03:51

many Americans consider units like feet and pounds more intuitive.

play03:56

And ironically, some regard the once revolutionary metric system

play04:00

as a symbol of global conformity.

play04:03

Nevertheless, the metric system is almost universally used in science and medicine,

play04:09

and it continues to evolve according to its original principles.

play04:13

For a long time,

play04:14

standard units were actually defined by carefully maintained physical prototypes.

play04:19

But thanks to improving technology and precision,

play04:22

these objects with limited access and unreliable longevity

play04:26

are now being replaced with standards based on universal constants,

play04:31

like the speed of light.

play04:33

Consistent measurements are such an integral part of our daily lives

play04:37

that it's hard to appreciate what a major accomplishment for humanity they've been.

play04:42

And just as it arose from a political revolution,

play04:45

the metric system remains crucial for the scientific revolutions to come.

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Связанные теги
French RevolutionMars OrbiterMeasurement SystemsMetric SystemU.S. CustomaryEnlightenmentScientific StandardNapoleonGlobal TradeImperial UnitsMetric Adoption
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