Definition:Knot (Unit of Measurement)
Jump to navigation
Jump to search
Definition
The knot is a unit of velocity which is used for air and sea navigation.
It is defined as $1$ nautical mile per hour.
It is now defined as exactly $1 \, 852$ metres.
| \(\ds \) | \(\) | \(\ds 1\) | knot | |||||||||||
| \(\ds \) | \(=\) | \(\ds 1 \, 852\) | metres per hour (exactly) | |||||||||||
| \(\ds \) | \(\approx\) | \(\ds 0 \cdotp 51444\) | metres per second | |||||||||||
| \(\ds \) | \(\approx\) | \(\ds 1 \cdotp 15078\) | (international) miles per hour |
Also see
Sources
- 1976: W.M. Smart: Textbook on Spherical Astronomy (6th ed.) ... (previous) ... (next): Chapter $\text I$. Spherical Trigonometry: Exercise $4$.
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): knot: 2.
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): knot: 2.
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): knot