Units of Measurement

• Base SI units: [time] = 1 second (s) (# of vibrations of 133Cs) [mass] = 1 kilogram (kg) (cylinder of Pt-Ir)[length] = 1 meter (m) (defined from time and c)

• Speed of light is defined to bec = 299 792 458 m/s

• Standard prefixes (C/J Table 1.2)k = 103 (Kilo) M = 106 (Mega) ...

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