01:160:161 Lecture Notes - Lecture 13: Si Base Unit, International System Of Units, Kilogram
12 Dec 2018
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M k d c m u n (10^9) (10^6) (10^3) (10^-1) (10^-2) (10^-3) (10^-6) (10^-9) The meter (m), the si base unit for length. Defined as the distance light travels in a vacuum in 1/299,792,458 seconds. The kilogram (kg), the si base unit for mass. Defined by the mass of a pt/lr cylinder kept at the international bureau of. Mass is a measure of the quantity of matter within an object. Weight is a measure of the gravitational pull on an object"s matter. The second (s), the si base unit for time. Defined as the duration of 9,192,631,770 periods of the radiation emitted from a transition in a cesium-133 atom. The kelvin (k), the si base unit for temperature. Temperature is a measure of the amount of average kinetic energy of the atoms/molecules that compose a sample of matter. Other common units for temperature are fahrenheit and celsius.
