SYSTÈME INTERNATIONALE

1670

• Gabriel Mouton created a system of measurements
• Used a one minute arch of the Earth, now called the nautical mile
• Also used the swing beat of a pendulum 1beat/second
• This was revised by several French scientists

1790

• A higher standard was needed
• A better system was created
• It eliminated excessive math calculations
• It was proportionate to the Earth

1795

• The metric system was adapted by French goverment

1799

• Official standards were set
• An official system was created

1875

• U.S. officially adapts the metric system

1900

• 35 countries officially accepted it

SI UNITS AND HOW THEY'RE USED

• Meter (m)-length
• Kilogram(Kg)-mass
• Second(s)-time
• Ampere(A)-amount of electric current
• Kelvin(K)-tempurature

...CONTINUED

• Candela(Cd)-brightness of light
• Mole(mol)-amount of chemical substance