Write 3 definitions of a metre(1 metre).
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it is a body covering a distance with velocity1 metre per sec in unit time.
it is s.I unit consisting of 100 cm.
it is distance covered by body with velocity 1km per sec in 1000 sec
it is s.I unit consisting of 100 cm.
it is distance covered by body with velocity 1km per sec in 1000 sec
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Hi buddy,
A metre was originally defined in 1889 as the distance between two marks drawn on a platinum-iridium rod kept at 0℃ in the International Bureau of Weights and measures.at Sevres near Paris.
Later, in 1960, the metre was redefined as 1,650,763.73 times the wavelength of a specified orange-red spectral line in the emission spectrum of Krypton-86.
Now here's the third definition,
One metre is also defined as 1,553,164.1 times the wavelength of the red line in the emission spectrum of cadmium.
Extra information:
Need fourth definition?
In 1983, the metre was redefined in terms of speed of light according to which one metre I the distance travelled by the light in 1/299,792,458 of a second in air(or vacuum).
Hope it helps!
A metre was originally defined in 1889 as the distance between two marks drawn on a platinum-iridium rod kept at 0℃ in the International Bureau of Weights and measures.at Sevres near Paris.
Later, in 1960, the metre was redefined as 1,650,763.73 times the wavelength of a specified orange-red spectral line in the emission spectrum of Krypton-86.
Now here's the third definition,
One metre is also defined as 1,553,164.1 times the wavelength of the red line in the emission spectrum of cadmium.
Extra information:
Need fourth definition?
In 1983, the metre was redefined in terms of speed of light according to which one metre I the distance travelled by the light in 1/299,792,458 of a second in air(or vacuum).
Hope it helps!
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