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SI Base Quantities and Units. Metric(SI) Prefixes. Chapter1:Length. 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. Mass.

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Chapter1 length
Chapter1:Length

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


Mass

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

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


Time

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

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


Vector addition head to tail
Vector Addition(head to tail)

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

VR= (V1+ V2)+V3

VR= V1+(V2+V3)


Vector addition by components
Vector addition(by components)

Components are projections along the axis

Find components by trigonometry


Vector multiplication
Vector Multiplication

Scalar product

Vector product




Ion crystal

Fluorescence from stored ions for different degrees

of laser cooling

Ion crystal

Fluorescence from stored ions for different degrees

of laser cooling


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