Meter

Definition: A meter, or metre (symbol: m), is the basic unit that length and distance in the global System of systems (SI). The meter is characterized as the distance traveled by light in 1/299 792 458 the a second. This meaning was contempt modified in 2019 come reflect alters in the meaning of the second.

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History/origin: Originally, in 1793, the meter was defined as one ten-millionth the the distance from the equator to the phibìc Pole. This adjusted in 1889, once the worldwide prototype metre was established as the size of a prototype meter bar (made of an alloy the 90% platinum and 10% iridium) measured at the melting allude of ice. In 1960, the meter was again redefined, this time in terms of a certain variety of wavelengths of a details emission heat of krypton-86. The current meaning of the meter is successfully the same as the an interpretation that was adopted in 1983, v slight changes due come the change in meaning of the second.

Current use: being the SI unit that length, the meter is used global in countless applications such as measuring distance, height, length, width, etc. The United says is one notable exception in that it greatly uses united state customary units such together yards, inches, feet, and miles instead of meter in everyday use.

Foot

Definition: A foot (symbol: ft) is a unit of size in the imperial and US customary equipment of measurement. A foot was identified as specifically 0.3048 meter in 1959. One foot includes 12 inches, and one garden is made up of three feet.

History/origin: prior to standardization of systems of measurement, and also the an interpretation of the foot at this time in use, the measurement of the foot was offered in countless different systems including the Greek, Roman, English, Chinese, and also French systems, differing in length between each. The miscellaneous lengths were because of parts that the person body historically being used as a communication for devices of length (such together the cubit, hand, span, digit, and also many others, sometimes referred to as anthropic units). This brought about the measurement of a foot varying in between 250 mm and also 335 mm in the past contrasted to the current definition of 304.8 mm. If the united States is one of the few, if no only, nations in i beg your pardon the foot is still commonly used, plenty of countries provided their very own version of the foot before metrication, as evidenced by a fairly big list of obsolete feet measurements.

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Current use: The foot is primarily used in the joined States, Canada, and also the uk for many everyday applications. In the US, feet and inches are commonly used to measure up height, much shorter distances, field length (sometimes in the type of yards), etc. Feet are additionally commonly supplied to measure up altitude (aviation) as well as elevation (such together that that a mountain). The worldwide foot coincides to human being feet v shoe size 13 (UK), 14 (US male), 15.5 (US female), or 46 (EU).

1 m = 3.280839895 ft1 ft = 0.3048 m