Why's a Meter a Meter?
Interactive Video
•
Science, Physics, Chemistry
•
11th Grade - University
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
The video explains the evolution of the meter as a unit of length. Initially, various units like the cubit and yard were used. The French Academy of Sciences aimed to standardize measurements, leading to the meter being defined as a fraction of Earth's circumference. A platinum bar was created as a standard, but it had limitations. In 1960, the meter was redefined using krypton-86 light wavelengths. Finally, in 1983, it was redefined as the distance light travels in a vacuum in 1/299,792,458 of a second, based on the constant speed of light.
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2 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
What was the significance of the Treaty of the Meter signed in 1875?
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
How is the meter currently defined in relation to the speed of light?
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