iridium
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∙ 11y ago0.01
1793 is not a prime number the factors are 1,11,163,1793
298.8333
Historically, the metre was defined by the French Academy of Sciences as the length between two marks on a platinum-iridium bar, which was designed to represent 1⁄10,000,000 of the distance from the equator to the north pole through Paris. In 1983, it was redefined by the International Bureau of Weights and Measures (BIPM) as the distance travelled by light in free space in 1⁄299,792,458 of a second
with a meter stick. just joking.. 1 metre was originally defined as 1/40,000,000th of the polar circumference of the Earth. The metre was later redefined as the length of a particular bar of platinum-iridium alloy held in a vault.
In France, during the Revolution, in 1793.
Because platinum is non reactive metal
you don't
The standard meter bar of Paris, also known as the metre des archives, is made of the platinum-iridium alloy. This bar was used as the standard definition of the meter from 1889 to 1960.
In 1793, France adopted a meter as its official unit of length. From that time on we had metric rulers.
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The three intermediate definitions of the meter between 1793 and 1983 were the archaic metre (1795), the provisional metre (1799), and the legal metre (1889). These definitions went through various changes and refinements to establish a standard unit of length based on physical constants.
A committee composed of well-known French mathematicians devised the metric system with the meter as the basis. The centimeter is merely derived from the meter.
Lead is the lightest among gold, lead, and platinum. Lead has a lower density compared to both gold and platinum.
Gauge meter
The element used to redefine a meter was the speed of light. Specifically, the meter was redefined in 1983 as the distance light travels in a vacuum in 1/299,792,458 of a second.
No, a liter is 1,000 times smaller than a kiloliter (kL).