Ciro Santilli
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中国独裁统治 China Dictatorship 新疆改造中心、六四事件、法轮功、郝海东、709大抓捕、2015巴拿马文件 邓家贵、低端人口、西藏骚乱
System of units
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"Physics"
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"Physics"
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toc
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344
wiki
Table of contents
344
Physical constant
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"System of units"
0
International System of Units (SI)
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"System of units"
37
Origins of Precision by Machine Thinking (2017)
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"International System of Units"
17
Versions of the international System of Units
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"International System of Units"
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2019 redefinition of the SI base units
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"Versions of the international System of Units"
0
Ampere in the 2019 redefinition of the SI base units
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"International System of Units"
67
Ampere
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"International System of Units"
7
Kilogram
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"International System of Units"
19
Kibble balance
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"Kilogram"
5
Time
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"International System of Units"
0
Frequency
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"Time"
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Period (physics)
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"Frequency"
0
Hertz (1857-1894, Hz)
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"Frequency"
4
Megahertz (MHz)
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"Hertz"
6
Clock
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"Time"
0
Quartz clock
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"Clock"
51
Atomic clock
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"Clock"
84
Caesium standard (1967)
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"Atomic clock"
28
Unit of time
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"Time"
0
Decimal time
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"Unit of time"
0
Second (s)
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"Unit of time"
0
Day (d)
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"Unit of time"
0
Calendar
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"Day"
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Year (y)
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"Unit of time"
0
Length
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"International System of Units"
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Meter
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"Length"
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Micrometer (Micron)
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"Meter"
0
Nanometer
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"Meter"
0
Angstrom (Ä)
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"Meter"
0
Picometer (pm)
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"Meter"
0
Gauge block
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"Length"
4
Light year (ly)
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"Length"
0
Geiger counter
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"International System of Units"
0
Natural units
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"International System of Units"
15
Planck units
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"Natural units"
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Imperial units
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"System of units"
0
Ancestors
Physics
Natural science
Science
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Incoming links
Planck's law