Please see the diagram below for better visualization | The distance from the sun to this point — that is, the line SI, is equal to 1 pc, if the angle formed by the lines A1I and A2I is two arcseconds |
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It is denoted as A | The distance of lines E1S and E2S each equal 1 AU |
When calculating speed using nautical miles, often knots are used as units.
1073 wavelengths of the orange-red emission line in the electromagnetic spectrum of the krypton-86 atom in a vacuum | One knot equals the speed of one nautical mile per hour |
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Derivatives of the meter, such as kilometers and centimeters, are also used in the metric system | Its total length is about 1 |
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