mega- (symbol M) is an SI prefix in the SI system of units denoting a factor of 106, 1,000,000 (one million). An SI prefix (also known as a metric prefix) is a name or associated symbol that precedes a unit of measure (or its symbol to form a Decimal multiple or The word million In standard English, the -lli- in million is pronounced with an l-sound followed by a The word million In standard English, the -lli- in million is pronounced with an l-sound followed by a
For example, 1 MW (megawatt) = 1,000,000 watts = 1,000 kilowatts. The watt (symbol W) is the SI derived unit of power, equal to one Joule of energy per Second. The watt (symbol W) is the SI derived unit of power, equal to one Joule of energy per Second.
Confirmed in 1960, it comes from the Greek μέγας, meaning great. Greece (Ελλάδα transliterated: Elláda, historically, Ellás,) officially the Hellenic Republic (Ελληνική Δημοκρατία [1]
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Other common examples of usage
- one megaton [of TNT] (a unit often used in measuring the explosive power of nuclear weapons) is 1,000,000 tons of TNT. A nuclear weapon is an explosive device that derives its destructive force from Nuclear reactions either fission or a combination of fission and fusion.
- megahertz — frequency of electromagnetic radiation for radio and television broadcasting, GSM, etc. The hertz (symbol Hz) is a measure of Frequency, informally defined as the number of events occurring per Second. Electromagnetic radiation takes the form of self-propagating Waves in a Vacuum or in Matter. GSM ( Global System for Mobile communications: originally from Groupe Spécial Mobile) is the most popular standard for Mobile phones in the 1 MHz = 1,000,000 Hz. The hertz (symbol Hz) is a measure of Frequency, informally defined as the number of events occurring per Second.
Square and cubic forms
As the SI-prefixes take precedence over exponents,
- 1 Mm² means one square megametre or the size of a square of 1,000,000 m × 1,000,000 m or 1012 m² (and not 1,000,000 × a square metre or 106 m²)
- 1 Mm³ means one cubic megametre or the size of a cube of 1,000,000 m × 1,000,000 m × 1,000,000 m or 1018 m² (and not 1,000,000 × a cubic metre or 106 m²)
Computing
In computing, mega- can sometimes denote 1,048,576 (220) of information units (example: a megabyte, a megaword), but can denote 1,000,000 (106) of other quantities, for example, transfer rates: 1 megabit/s = 1,000,000 bit/s. A megametre ( American spelling: megameter, symbol Mm) is a unit of Length in the Metric system, equal to one million Classification A square (regular Quadrilateral) is a special case of a Rectangle as it has four right angles and equal parallel sides M^2 redirects here For other uses see M². CM2 redirects here A megametre ( American spelling: megameter, symbol Mm) is a unit of Length in the Metric system, equal to one million A cube is a three-dimensional solid object bounded by six square faces facets or sides with three meeting at each vertex. CM3 redirects here If you were looking for the 3rd game in the Cooking Mama series abbreviated as CM3 see here. Computing is usually defined like the activity of using and developing Computer technology Computer hardware and software. A megabyte is a unit of Information or Computer storage equal to either 106 (1000000 Bytes or 220 (1048576 bytes depending on In Telecommunications and Computing, bitrate (sometimes written bit rate, data rate or as a Variable R or f b
The prefix mebi- has been suggested as a prefix for 220 to avoid ambiguity, but is yet to be widely used. In computing binary prefixes are names or associated symbols that can precede a unit of measure (such as a Byte) to indicate multiplication by a power of two
| 1000m | 10n | Prefix | Symbol | Since[1] | Short scale | Long scale | Decimal |
|---|---|---|---|---|---|---|---|
| 10008 | 1024 | yotta- | Y | 1991 | Septillion | Quadrillion | 1 000 000 000 000 000 000 000 000 |
| 10007 | 1021 | zetta- | Z | 1991 | Sextillion | Trilliard | 1 000 000 000 000 000 000 000 |
| 10006 | 1018 | exa- | E | 1975 | Quintillion | Trillion | 1 000 000 000 000 000 000 |
| 10005 | 1015 | peta- | P | 1975 | Quadrillion | Billiard | 1 000 000 000 000 000 |
| 10004 | 1012 | tera- | T | 1960 | Trillion | Billion | 1 000 000 000 000 |
| 10003 | 109 | giga- | G | 1960 | Billion | Milliard | 1 000 000 000 |
| 10002 | 106 | mega- | M | 1960 | Million | 1 000 000 | |
| 10001 | 103 | kilo- | k | 1795 | Thousand | 1 000 | |
| 10002/3 | 102 | hecto- | h | 1795 | Hundred | 100 | |
| 10001/3 | 101 | deca- | da | 1795 | Ten | 10 | |
| 10000 | 100 | (none) | (none) | NA | One | 1 | |
| 1000−1/3 | 10−1 | deci- | d | 1795 | Tenth | 0. An SI prefix (also known as a metric prefix) is a name or associated symbol that precedes a unit of measure (or its symbol to form a Decimal multiple or The long and short scales are two different numerical systems used throughout the world Short scale is the English translation of the French The long and short scales are two different numerical systems used throughout the world Short scale is the English translation of the French The decimal ( base ten or occasionally denary) Numeral system has ten as its base. yotta- (symbol Y) is an SI prefix in the SI ( System of units) denoting 1024 or 1 000 000 000 000 000 000 000 000 Names of numbers larger than a quadrillion are almost never used for reasons discussed further below This list compares various sizes of positive Numbers including counts of things Dimensionless quantity and probabilities. zetta- (symbol Z) is an SI prefix in the SI ( System of units) denoting 1021 or 1 000 000 000 000 000 000 000 Names of numbers larger than a quadrillion are almost never used for reasons discussed further below Names of numbers larger than a quadrillion are almost never used for reasons discussed further below exa- (symbol E) is a prefix in the SI system of units denoting 1018 or 1 000 000 000 000 000 000 Names of numbers larger than a quadrillion are almost never used for reasons discussed further below This list compares various sizes of positive Numbers including counts of things Dimensionless quantity and probabilities. In Physics and Mathematics, peta- (symbol P) is a prefix in the SI ( System of units) denoting 1015 This list compares various sizes of positive Numbers including counts of things Dimensionless quantity and probabilities. Names of numbers larger than a quadrillion are almost never used for reasons discussed further below teras- (symbol T) is a prefix in the SI system of units denoting 1012, or 1000000000000 (1 trillion This list compares various sizes of positive Numbers including counts of things Dimensionless quantity and probabilities. For other meanings see Giga (disambiguation Giga- (symbol G is a prefix in the SI system of units denoting 109 Milliard is a French -derived word meaning the number 1000000000 (109 one thousand million SI prefix Giga) Kilo- (symbol k is a prefix in the SI and other systems of units denoting 103 or 1000 hecto- or hecta- (symbol h) is a SI prefix in the SI system of units denoting a factor of 102 (100 deca- or deka- is an SI prefix (symbol da) in the SI system of units also a Numerical prefix (from Greek δέκα Mathematics For any number x: x ·1 = 1· x = x (1 is the multiplicative identity deci- (symbol d) is a prefix in the SI system of units denoting a factor of 10−1 (1/10 1 | |
| 1000−2/3 | 10−2 | centi- | c | 1795 | Hundredth | 0. centi- (symbol c) is a SI prefix in the SI system of units denoting a factor of 10−2 or 1/100 01 | |
| 1000−1 | 10−3 | milli- | m | 1795 | Thousandth | 0. "Milli" redirects here for the village in Azerbaijan see Birinci Milli; for similar-sounding words see Millie. 001 | |
| 1000−2 | 10−6 | micro- | µ | 1960[2] | Millionth | 0. micro- ( µ) is a prefix in the SI and other systems of units denoting a factor of 10&minus6 (one Millionth. 000 001 | |
| 1000−3 | 10−9 | nano- | n | 1960 | Billionth | Milliardth | 0. nano- is a prefix (symbol n) in the SI system of units denoting a factor of 10−9 000 000 001 |
| 1000−4 | 10−12 | pico- | p | 1960 | Trillionth | Billionth | 0. pico- (symbol p) is a prefix denoting a factor of 10-12 in the International System of Units (SI 000 000 000 001 |
| 1000−5 | 10−15 | femto- | f | 1964 | Quadrillionth | Billiardth | 0. femto- is an SI prefix (symbol f) in the SI system of units denoting a factor of 10−15 or 0 000 000 000 000 001 |
| 1000−6 | 10−18 | atto- | a | 1964 | Quintillionth | Trillionth | 0. atto- (symbol a) is an SI prefix to a unit and means that it is 10−18 times this unit 000 000 000 000 000 001 |
| 1000−7 | 10−21 | zepto- | z | 1991 | Sextillionth | Trilliardth | 0. zepto- (symbol z) is a prefix in the SI system of units denoting a factor of 10−21 000 000 000 000 000 000 001 |
| 1000−8 | 10−24 | yocto- | y | 1991 | Septillionth | Quadrillionth | 0. yocto- (symbol y) is an SI prefix in the SI system of units denoting a factor of 10−24 or 0 000 000 000 000 000 000 000 001 |
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See also
References
- ^ "mega-". An SI prefix (also known as a metric prefix) is a name or associated symbol that precedes a unit of measure (or its symbol to form a Decimal multiple or In computing binary prefixes are names or associated symbols that can precede a unit of measure (such as a Byte) to indicate multiplication by a power of two A mebibyte (a contraction of me ga bi nary byte) is a unit of Information or Computer storage, abbreviated MiB. An order of magnitude is the class of scale or magnitude of any amount where each class contains values of a fixed ratio to the class preceding it Oxford English Dictionary. Oxford University Press. 2nd ed. 1989.
External links
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