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
International System of Units (SI)
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Science
Natural science
Physics
System of units
List of systems of units
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words: 804
articles: 34
The key is to define only the minimum number of measures: if you define more definitions become over constrained and could be inconsistent.
Learning the modern SI is also a great way to learn some interesting Physics.
Table of contents
804
34
Origins of Precision by Machine Thinking (2017)
International System of Units
17
Versions of the international System of Units
International System of Units
318
1
2019 redefinition of the SI base units
Versions of the international System of Units
318
Ampere in the 2019 redefinition of the SI base units
International System of Units
67
Ampere
International System of Units
7
Kilogram
International System of Units
31
2
Avogadro project
Kilogram
Kibble balance
Kilogram
12
Time
International System of Units
308
14
Frequency
Time
10
3
Period (physics)
Frequency
Hertz (1857-1894, Hz)
Frequency
10
1
Megahertz (MHz)
Hertz
6
Clock
Time
298
3
Quartz clock
Clock
51
Atomic clock
Clock
247
1
Caesium standard (1967, 3.26 cm)
Atomic clock
58
Unit of time
Time
5
Decimal time
Unit of time
Second (s)
Unit of time
Day (d)
Unit of time
1
Calendar
Day
Year (y)
Unit of time
Length
International System of Units
4
7
Meter
Length
4
Micrometer (Micron)
Meter
Nanometer
Meter
Angstrom (Ä)
Meter
Picometer (pm)
Meter
Gauge block
Length
4
Light year (ly)
Length
Geiger counter
International System of Units
Natural units
International System of Units
15
1
Planck units
Natural units
Tagged
Volt
Ancestors
List of systems of units
System of units
Physics
Natural science
Science
Ciro Santilli's Homepage
Incoming links
British pragmatism
Caesium standard
Ciro Santilli
Electric current
Hyperfine structure
Natural units