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The General Conference on Weights and Measures (abbreviated CGPM from the French: Conférence générale des poids et mesures) [1]: 117 is the supreme authority of the International Bureau of Weights and Measures (BIPM), the intergovernmental organization established in 1875 under the terms of the Metre Convention through which member states act together on matters related to measurement ...
The SI comprises a coherent system of units of measurement starting with seven base units, which are the second (symbol s, the unit of time), metre (m, length), kilogram (kg, mass), ampere (A, electric current), kelvin (K, thermodynamic temperature), mole (mol, amount of substance), and candela (cd, luminous intensity).
A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic.Each prefix has a unique symbol that is prepended to any unit symbol.
Schematic drawing of a hydrometer. The lower the density of the fluid, the deeper the weighted float B sinks. The depth is read off the scale A.. A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy.
Tape measures are often designed for specific uses or trades. Tapes may have different scales, be made of different materials, and be of different lengths depending on the intended use.
Such a resolution can vertically scale SD content to fit by natural numbers (6 for NTSC and 5 for PAL). Horizontal scaling of SD is always fractional (non-anamorphic: 5.33...5.47, anamorphic: 7.11...7.29). The first display with this resolution was the Dell UltraSharp UP2715K, announced on September 5, 2014. [66]
Joseph Aoun (pictured) is elected president of Lebanon after a two-year vacancy.; An attack on the presidential palace in N'Djamena, Chad, results in 20 deaths.; A series of wildfires in Southern California, United States, leaves at least 16 people dead and forces the evacuation of nearly 180,000 others.
Measuring shaft of the nilometer on Roda Island, Cairo. A nilometer is a structure for measuring the Nile River's clarity and water level during the annual flood season in Egypt. [1]