Definition:Imperial/Length/Yard
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Definition
The yard is an imperial unit of length.
| \(\displaystyle \) | \(\) | \(\displaystyle 1\) | yard | ||||||||||
| \(\displaystyle \) | \(=\) | \(\displaystyle 3\) | feet | ||||||||||
| \(\displaystyle \) | \(=\) | \(\displaystyle 36\) | inches | ||||||||||
| \(\displaystyle \) | \(=\) | \(\displaystyle 91 \cdot 44\) | centimetres | ||||||||||
| \(\displaystyle \) | \(=\) | \(\displaystyle 0 \cdotp 9144\) | metres |
Historical Note
The yard was originally defined in terms of a bronze standard.
It was redefined in $1963$ in the UK Weights and Measures Act as exactly $0 \cdotp 9144$ metres.
Sources
- 1966: Isaac Asimov: Understanding Physics ... (previous) ... (next): $\text {I}$: Motion, Sound and Heat: Chapter $2$: Falling Bodies: Free Fall
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): Entry: yard
