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Optical power (also referred to as dioptric power, refractive power, focusing power, or convergence power) is the degree to which a lens, mirror, or other optical system converges or diverges light. It is equal to the reciprocal of the focal length of the device.[1] The dioptre is the most common unit of measurement of optical power. The SI unit for optical power is the inverse metre (m−1).
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The what is the SI unit for temperature?
The Kelvin is the SI unit for thermodynamic temperature.
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The Siemens is the SI unit for the connectivity.
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The SI unit of molar conductance is siemens per mole per meter (S∙m²∙mol⁻¹) or m²∙s⁻¹∙mol⁻¹. It measures the ability of a substance to conduct electric current per unit concentration and distance.
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The SI unit equivalent to Nm is Joule (J).
