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Weights And Measures - LoveToKnow 1911 (15587 words) |
 | Of the metric units international definitions have been stated as follows: (a) The unit of volume for determinations of a high degree of accuracy is the volume occupied by the mass of 1 kilogram of pure water at its maximum density and under the normal atmospheric pressure; this volume is called litre. |
| The two standards, the cubic inch and the cubic decimetre, may not be strictly comparable owing to a difference in the normal temperature (Centigrade and Fahrenheit scales) of the two units of extension, the metre and the yard. |
| The Roman amphora being equal to the cubic foot, and containing 80 librae of water, is one of the strongest cases of such relations, being often mentioned by ancient writers. |
| Megametre (141 words) |
| A megametre (American spelling: megameter) (symbol: Mm) is a unit of length equal to 10 |
| The Earth's equatorial diameter is 12.76 Mm The mean distance from the Earth to the Moon is 384.4 Mm Jupiter's equatorial diameter is 143 Mm. |
| Megametres are rarely seen in practical use, because they are too big for most terrestrial tasks. |
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