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SI Base Quantities and UnitsPowerPoint Presentation

SI Base Quantities and Units

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SI Base Quantities and Units

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1m 10-7 of the distance from the equator to the pole

1m = length of the path traveled by light in vacuum during the time interval of 1/299,792,458 of a second

1kg = mass of the platinum-iridium cylinder in Paris

1u = 1.6605 10-27kg ( unified atomic mass unit)

1s = 1/24*60*60 day=1/86400 day

1s = time required for 9,192,631,720 periods of radiation of the Cs-atom

The 3 vectors Vi can be added by any order to form VR

VR= (V1+ V2)+V3

VR= V1+(V2+V3)

Components are projections along the axis

Find components by trigonometry

Scalar product

Vector product

Fluorescence from stored ions for different degrees

of laser cooling

Ion crystal

Fluorescence from stored ions for different degrees

of laser cooling