Who defines how long a centimetre is?
STARLOG.COM The Meteric System & SI
"Who Defines How Long A Centimetre is?"
The centimeter is a unit of length in the International System of Units (SI), equal to one-hundredth of a meter 1. It is used in many everyday measurements, such as measuring human height 1.
The definition of the centimeter has evolved over time. In 1795, the French Academy of Sciences defined the meter as one ten-millionth of the distance from the North Pole to the equator along a meridian passing through Paris 1. The centimeter was then defined as one-hundredth of a meter 1.
In 1960, the International System of Units (SI) was established, and the meter was redefined as the distance traveled by light in a vacuum during a time interval of 1/299,792,458 of a second 1. This definition made the meter independent of any particular substance or object 1. The centimeter remained defined as one-hundredth of a meter under this new system 1.
So who defines how long a centimeter is? The International Bureau of Weights and Measures (BIPM) is responsible for maintaining the International System of Units (SI) and ensuring that its definitions are accurate and up-to-date 1. The BIPM is an international organization that works with national metrology institutes to develop and maintain the SI 1.
In summary, the length of a centimeter is defined as one-hundredth of a meter, which is maintained by the International Bureau of Weights and Measures (BIPM) 1.
Comments
Post a Comment