Information about Yocto
yocto- (symbol y) is an SI prefix in the SI system of units denoting a factor of 10−24 or 0.000000000000000000000001.
Adopted in 1991, it comes from the Greek οκτώ, meaning eight, because it is equal to 1/10008. As of 2007, yocto- is the smallest SI prefix to be confirmed.
It is used for measuring an atom's length, radius, and mass, for example:
Adopted in 1991, it comes from the Greek οκτώ, meaning eight, because it is equal to 1/10008. As of 2007, yocto- is the smallest SI prefix to be confirmed.
It is used for measuring an atom's length, radius, and mass, for example:
| 1000n | 10n | Prefix | Symbol | Short scale | Long scale | Decimal equivalent in SI writing style |
|---|---|---|---|---|---|---|
| 10008 | 1024 | yotta- | Y | Septillion | Quadrillion | 1 000 000 000 000 000 000 000 000 |
| 10007 | 1021 | zetta- | Z | Sextillion | Trilliard (thousand trillion) | 1 000 000 000 000 000 000 000 |
| 10006 | 1018 | exa- | E | Quintillion | Trillion | 1 000 000 000 000 000 000 |
| 10005 | 1015 | peta- | P | Quadrillion | Billiard (thousand billion) | 1 000 000 000 000 000 |
| 10004 | 1012 | tera- | T | Trillion | Billion | 1 000 000 000 000 |
| 10003 | 109 | giga- | G | Billion | Milliard (thousand million) | 1 000 000 000 |
| 10002 | 106 | mega- | M | Million | 1 000 000 | |
| 10001 | 103 | kilo- | k | Thousand | 1 000 | |
| 10002/3 | 102 | hecto- | h | Hundred | 100 | |
| 10001/3 | 101 | deca- | da | Ten | 10 | |
| 10000 | 100 | (none) | (none) | One | 1 | |
| 1000−1/3 | 10−1 | deci- | d | Tenth | 0.1 | |
| 1000−2/3 | 10−2 | centi- | c | Hundredth | 0.01 | |
| 1000−1 | 10−3 | milli- | m | Thousandth | 0.001 | |
| 1000−2 | 10−6 | micro- | Millionth | 0.000 001 | ||
| 1000−3 | 10−9 | nano- | n | Billionth | Milliardth | 0.000 000 001 |
| 1000−4 | 10−12 | pico- | p | Trillionth | Billionth | 0.000 000 000 001 |
| 1000−5 | 10−15 | femto- | f | Quadrillionth | Billiardth | 0.000 000 000 000 001 |
| 1000−6 | 10−18 | atto- | a | Quintillionth | Trillionth | 0.000 000 000 000 000 001 |
| 1000−7 | 10−21 | zepto- | z | Sextillionth | Trilliardth | 0.000 000 000 000 000 000 001 |
| 1000−8 | 10−24 | yocto- | y | Septillionth | Quadrillionth | 0.000 000 000 000 000 000 000 001 |
See also
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 submultiple.
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Si, si, or SI may refer to (all SI unless otherwise stated):
In language:
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In language:
- One of two Italian words:
- sì (accented) for "yes"
- si
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units of measurement have played a crucial role in human endeavour from early ages up to this day. Disparate systems of measurement used to be very common. Now there is a global standard, the International System (SI) of units, the modern form of the metric system.
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Year 1991 (MCMXCI
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1960s 1970s 1980s - 1990s - 2000s 2010s 2020s
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Year 1991 (MCMXCI
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Motto
Ελευθερία ή θάνατος
Eleftheria i thanatos
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Ελευθερία ή θάνατος
Eleftheria i thanatos
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2007 by topic:
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atom (Greek ἄτομος or átomos meaning "indivisible") is the smallest particle still characterizing a chemical element.
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Length is the long dimension of any object. The length of a thing is the distance between its ends, its linear extent as measured from end to end. This may be distinguished from height, which is vertical extent, and width or breadth
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In classical geometry, a radius (plural: radii) of a circle or sphere is any line segment from its center to its perimeter. By extension, the radius of a circle or sphere is the length of any such segment. The radius is half the diameter.
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Mass is a fundamental concept in physics, roughly corresponding to the intuitive idea of "how much matter there is in an object". Mass is a central concept of classical mechanics and related subjects, and there are several definitions of mass within the framework of relativistic
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Mass is a fundamental concept in physics, roughly corresponding to the intuitive idea of "how much matter there is in an object". Mass is a central concept of classical mechanics and related subjects, and there are several definitions of mass within the framework of relativistic
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Electron
Theoretical estimates of the electron density for the first few hydrogen atom electron orbitals shown as cross-sections with color-coded probability density
Composition: Elementary particle
Family: Fermion
Group: Lepton
Generation: First
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Theoretical estimates of the electron density for the first few hydrogen atom electron orbitals shown as cross-sections with color-coded probability density
Composition: Elementary particle
Family: Fermion
Group: Lepton
Generation: First
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Proton
The quark structure of the proton.
Composition: 2 up, 1 down
Family: Fermion
Group: Quark
Interaction: Gravity, Electromagnetic, Weak, Strong
Antiparticle: Antiproton
Discovered: Ernest Rutherford (1919)
Symbol: p+
Mass: 1.
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The quark structure of the proton.
Composition: 2 up, 1 down
Family: Fermion
Group: Quark
Interaction: Gravity, Electromagnetic, Weak, Strong
Antiparticle: Antiproton
Discovered: Ernest Rutherford (1919)
Symbol: p+
Mass: 1.
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Neutron
The quark structure of the neutron.
Composition: one up, two down
Family: Fermion
Group: Quark
Interaction: Gravity, Electromagnetic, Weak, Strong
Antiparticle: Antineutron
Discovered: James Chadwick[1]
Symbol: n
Mass: 1.
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The quark structure of the neutron.
Composition: one up, two down
Family: Fermion
Group: Quark
Interaction: Gravity, Electromagnetic, Weak, Strong
Antiparticle: Antineutron
Discovered: James Chadwick[1]
Symbol: n
Mass: 1.
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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 submultiple.
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The long and short scales are two different numerical systems used throughout the world:
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- Short scale is the English translation of the French term échelle courte.
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The long and short scales are two different numerical systems used throughout the world:
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- Short scale is the English translation of the French term échelle courte.
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decimal (base ten or occasionally denary) numeral system has ten as its base. It is the most widely used numeral system, perhaps because humans have four fingers and a thumb on each hand, giving a total of ten digits over both hands.
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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.
Adopted in 1991, it comes from the Greek ὀκτώ (októ), meaning
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Adopted in 1991, it comes from the Greek ὀκτώ (októ), meaning
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Quadrillion may mean either of the two numbers (see long and short scales for more detail):
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- 1,000,000,000,000,000 (one thousand million million; ; SI prefix peta) - increasingly common meaning in English language usage.
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zetta- (symbol Z) is an SI prefix in the SI (system of units) denoting 1021 or 1 000 000 000 000 000 000 000.
Adopted in 1991, it comes from the Latin septem, meaning seven, because it is equal to 10007.
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Adopted in 1991, it comes from the Latin septem, meaning seven, because it is equal to 10007.
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exa- (symbol E) is a prefix in the SI system of units denoting 1018 or 1 000 000 000 000 000 000.
Adopted in 1991, it comes from the Greek ἕξ, meaning six (like hexa- ), because it is equal to 10006.
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Adopted in 1991, it comes from the Greek ἕξ, meaning six (like hexa- ), because it is equal to 10006.
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Trillion may mean:
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Numbers
Either of the two numbers (see long and short scales for more detail):- 1,000,000,000,000 (one million million; ; SI prefix tera) - increasingly common meaning in English language usage.
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peta- (symbol: P) is a prefix in the SI (system of units) denoting 1015, or 1 000 000 000 000 000. For example:
1 petametre = 1015 metres
1 petasecond = 1015 seconds
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1 petametre = 1015 metres
1 petasecond = 1015 seconds
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Quadrillion may mean either of the two numbers (see long and short scales for more detail):
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- 1,000,000,000,000,000 (one thousand million million; ; SI prefix peta) - increasingly common meaning in English language usage.
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