A system of physical units in which the fundamental quantities are length, time, mass, electric current, temperature, luminous intensity, and amount of substance, and the corresponding units are the meter, second, kilogram, ampere, kelvin, candela, and mole. The system has been given official status and recommended for universal use by the General Conference on Weights and Measures.
SI Units,Systeme International d'Unites,SI Unit,Unit, SI,Units, SI
D010506
Periodicals as Topic
Works about publications issued at stated, more or less regular, intervals.
Journals as Topic,Magazines,Newsletters,Magazine,Newsletter
D011827
Radiation
Emission or propagation of acoustic waves (SOUND), ELECTROMAGNETIC ENERGY waves (such as LIGHT; RADIO WAVES; GAMMA RAYS; or X-RAYS), or a stream of subatomic particles (such as ELECTRONS; NEUTRONS; PROTONS; or ALPHA PARTICLES).
Radiations
D006113
United Kingdom
Country in northwestern Europe including Great Britain and the northern one-sixth of the island of Ireland, located between the North Sea and north Atlantic Ocean. The capital is London.
Great Britain,Isle of Man
D014894
Weights and Measures
Measuring and weighing systems and processes.
Measures,Scales,Weights,Measure,Measures and Weights