physics.nist.gov
Held at NIST Physics Laboratory.
URLs from physics.nist.gov:
URL: http://physics.nist.gov/cuu/Constants/index.html URL: http://physics.nist.gov/cuu/Units/SIdiagram.html URL: http://physics.nist.gov/PhysRefData/contents.html URL: http://physics.nist.gov/cuu/Constants URL: http://physics.nist.gov/GenInt/STM/stm.html URL: http://physics.nist.gov/Divisions/Div842/Gp4/group4.html URL: http://physics.nist.gov/cuu/Constants/energy.html URL: http://physics.nist.gov/PhysRefData URL: http://physics.nist.gov/MajResFac/EBIT/ebit.html URL: http://physics.nist.gov/Pubs/AtSpec/index.html URL: http://physics.nist.gov/GenInt/Parity/cover.html URL: http://physics.nist.gov/cuu/Uncertainty/index.html URL: http://physics.nist.gov/PhysRefData/IonEnergy/ionEnergy.html URL: http://physics.nist.gov/GenInt/Curie/main.html URL: http://physics.nist.gov/cuu/Units/bibliography.html URL: http://physics.nist.gov
Queries:
- perodic table
- metric system
- kilogram
- clocks
- atomic for potassium
- standard units physics
- history of time
- what is meter
- standard system of measurement
- acceptance testing of radioactive palladium seeds
- one ten-millionth of the length of the meridian through paris from pole to the equator
- one meter
- charles clark
- system of measurement metric
- units kilo
- the composition of mercury
- quality assurance testing on radioactive palladium seeds
- derived units
- units used to express energy
- greenwich time zones
- more...
Tweets about physics.nist.gov
- @Only1TDemps technically time moves at exactly the same rate the second defined as radiation time of cesium 133 atoms
- @taiba_t 一応単位系に関するページも覗いてみたのですが、たしかにそう書いてありました (#15 Unit spacing) でもスペースないのに慣れてると若干違和感ありますね……