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Vor 6 Tagen · The viscosity of a fluid is a measure of its resistance to deformation at a given rate. [1] For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water. [2] Viscosity is defined scientifically as a force multiplied by a time divided by an area.
18. Mai 2024 · Das Bar (von ) ist in der Physik, der Chemie und Technik eine gesetzliche (aus dem Internationalen Einheitensystem SI abgeleitete) Einheit für den Druck. Als Faustregel gilt: 1 bar ist etwa der Luftdruck auf der Erdoberfläche oder der Druck einer Wassersäule von 10 m Höhe.
Vor 4 Tagen · The oldest known metal length standard corresponds to this Sumerian unit and dates from 2650 BCE. This copper bar was discovered in Nippur, on the banks of the Euphrates, and is kept in the Istanbul Archaeological Museum. Archaeologists consider that this 51.85 cm long unit was the origin of the Roman foot.
Vor 6 Tagen · As of Unicode version 15.1, there are 149,878 characters with code points, covering 161 modern and historical scripts, as well as multiple symbol sets. This article includes the 1,062 characters in the Multilingual European Character Set 2 ( MES-2) subset, and some additional related characters.
Vor 3 Tagen · The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of 1 299 792 458 of a second, where the second is defined by a hyperfine transition frequency of caesium. [2]
Vor 3 Tagen · A magnetic field (sometimes called B-field [1]) is a physical field that describes the magnetic influence on moving electric charges, electric currents, [2] : ch1 [3] and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.
28. Mai 2024 · Young's modulus enables the calculation of the change in the dimension of a bar made of an isotropic elastic material under tensile or compressive loads. For instance, it predicts how much a material sample extends under tension or shortens under compression.
