# How was the length of a meter redefined in the year 1983?

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On October 20, 1983, the meter was officially redefined as the distance traveled by light in a vacuum during a time interval of 1/299,792,458 of a second.

Light travels at 299792.458 km/sec, so the period was chosen as 0.00000000335641 second, or 3.35641 x 10-9 second.

The original definitions (1799 and 1899) depended on a measured standard bar. In 1960, it was redefined as a relationship to the wavelength of light from ions of the element krypton. In 1980, the standard was based on the unusually cohesive wavelength of an iodine-stabilized helium-neon laser.
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# How was the length of a standard meter redefined in 1983?

Originally, a metre was defined as 1/10,000,000th of the distance from the Earth's equator to the North pole. Since 1983 it has been defined as:. the length of the path trave

50 tds

# How was the length of a standard meter redefined in the year 1983?

Answer . It was redefined as 3 feet...

it wasnt

# In 1983 what changed about the length of the meter?

Answer \n. \nThe French were the first to define the length of a meter by using a alluminium/platinum alloy bar of a meter length at 25 degrees Celcius. This however is ver

# How was the lenght of a standard meter redefined in the year 1983?

they put thangs tew gether nd they brainstormed alot.

# How was the length of standard meter redefined?

it was the European

# How was the length of a standrad meter redefined in the year 1983?

On October 20, the meter was redefined again. The definition states that the meter is the length of the path traveled by light in vacuum during a time interval of 1/299,792,4

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# How was the length of a standard meter redefined in1983?

Since 1983 the meter has been defined as the distance light travels in a vacuum in exactly 1/229,792,458th of a second

100cm

# What element was used to redefine a meter?

Platinum-Iridium Alloy (9:1 ratio)

# How was the meter redefined in 1866?

The Metric Act of 1866 redefined the meter in American terms as 39.37 inches.

# How was the length of a standrd meter redefined in the year 1983?

Since 1983, the meter has been defined as "the length of the pathtraveled by light in a vacuum during a time interval of1/299,792,458 of a second."

# How was the length of a meter redined in 1983?

The metre was originally defined as one ten-millionth of the distance from the North Pole to the equator a;ong the meridian going through Paris. As the measurement of the eart
In Physics

# What problems are there in maintaining and using a metal bar as the primary length standard as was done before the meter was redefined in 1983?

Dimension change due to temperature fluctuation (expansion and contraction) would be one.

# How was the length of a meter redefined in the year 1993?

It was not. The current definition was established in 1983.