Systems of Measurements cont cgs -Gaussian system named for the first letters of the units it uses for fundamental quantities US Customary everyday units often uses weight, in pounds, instead of mass as a fundamental quantity
Systems of Measurements, cont ◼ cgs – Gaussian system ◼ named for the first letters of the units it uses for fundamental quantities ◼ US Customary ◼ everyday units ◼ often uses weight, in pounds, instead of mass as a fundamental quantity
Length Units Si -meter, gs - centimeter, cm US Customary -foot, ft a Defined in terms of a meter - the distance traveled by light in a vacuum during a given time
Length ◼ Units ◼ SI – meter, m ◼ cgs – centimeter, cm ◼ US Customary – foot, ft ◼ Defined in terms of a meter – the distance traveled by light in a vacuum during a given time
Mass a Units si kilogram, kg a cgs- gram, g USC-slug, slug Defined in terms of kilogram based on a specific cylinder kept at the international bureau of Weights and Measures
Mass ◼ Units ◼ SI – kilogram, kg ◼ cgs – gram, g ◼ USC – slug, slug ◼ Defined in terms of kilogram, based on a specific cylinder kept at the International Bureau of Weights and Measures
Standard Kilogram
Standard Kilogram
Time Units seconds, s in all three systems Defined in terms of the oscillation of radiation from a cesium atom
Time ◼ Units ◼ seconds, s in all three systems ◼ Defined in terms of the oscillation of radiation from a cesium atom