Search results
Results From The WOW.Com Content Network
For example, 5 km is treated as 5000 m, which allows all quantities based on the same unit to be factored together even if they have different prefixes. A prefix symbol attached to a unit symbol is included when the unit is raised to a power. For example, 1 km 2 denotes 1 km × 1 km = 10 6 m 2, not 10 3 m 2.
The prefix was a part of the original metric system in 1795. It is not in very common usage, although the deca pascal is occasionally used by audiologists . The deca newton is also encountered occasionally, probably because it is an SI approximation of the kilogram-force .
The prefixes are given from the least significant decimal digit up: units, then tens, then hundreds, then thousands. For example: 548 → octa- ( 8 ) + tetraconta- ( 40 ) + pentacta- ( 500 ) = octatetracontapentacta-
The prefixes of the metric system precede a basic unit of measure to indicate a decadic multiple and fraction of a unit. Each prefix has a unique symbol that is added to the beginning of the unit symbol. Some of the prefixes date back to the introduction of the metric system in the 1790s, but new prefixes have been added, and some have been ...
Several common-use numerical prefixes denote vulgar fractions. Words containing non-technical numerical prefixes are usually not hyphenated. This is not an absolute rule, however, and there are exceptions (for example: quarter-deck occurs in addition to quarterdeck). There are no exceptions for words comprising technical numerical prefixes, though.
Example Search for titles containing the word or using the prefix: dactyl-, dactylo-G δάκτυλος (dáktulos) finger or toe: black-legged kittiwake, Rissa tridactyla; Pterodactylus: All pages with titles beginning with Dactyl: deca-, deka-G δέκα (déka) ten: alfonsino, Beryx decadactylus: All pages with titles beginning with Deca ...
The prefix kilo, for example, implies a factor of 1000 (10 3), and the prefix milli implies a factor of 1/1000 (10 −3). Thus, a kilometre is a thousand metres, and a milligram is one thousandth of a gram. These relations can be written symbolically as: [4]
For example, 1 and 1.02 are within an order of magnitude. So are 1 and 2, 1 and 9, or 1 and 0.2. However, 1 and 15 are not within an order of magnitude, since their ratio is 15/1 = 15 > 10. The reciprocal ratio, 1/15, is less than 0.1, so the same result is obtained.