kilogram

kilogram

The kilogram (kg) is the base unit of mass in the SI system of units. The standard kilogram is a 1 kg corrosion resistant platinum/iridium cylinder, carefully preserved in the suburbs of Paris (with a backup copy kept in Gaithersburg, Maryland.) Efforts are underway to replace these artifacts by redefining the kilogram as the mass of a certain number of silicon atoms.

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kilogram (kg)

항공우주; 우주선

The SI base unit of mass, based on the mass of a metal cylinder kept in France. See also g (gram).

kimi fizike

화학; 일반 화학

A branch of chemistry that studies chemical phenomena from a physical and mathematical perspective. Physical chemistry includes chemical thermodynamics, kinetics, spectroscopy, ...

itrium

화학; 일반 화학

Element 39, atomic weight 88.90585, a dark gray metal that is used in alloys and nuclear technology for its high neutron transparency. Yttrium compounds are used in the ...

spontan

화학; 일반 화학

A spontaneous process occurs because of internal forces; no external forces are required to keep the process going, although external forces may be required to get the process ...

stabilizator

화학; 일반 화학

A substance that makes a mixture more stable. Antioxidants and antiozonants are examples of stabilizers; stabilizers are added to paints to prevent the components of the mixture ...

biokimi

화학; 일반 화학

The chemistry of living things, including the structure and function of biological molecules and the mechanism and products of their reactions.

homogjen

화학; 일반 화학

Having uniform properties or composition; only a solution can be homogeneous

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Smokeout Great American

Observed every year since 1977, the Great American Smokeout takes place on the third Thursday of November. Sponsored by the American Cancer Society, ...