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Milliseconds (msec) = 1/1000 of a second

Microseconds (μsec) = 1/1,000,000 of a second

Nanosecond (nsec) = 1/1,000,000,000 of a second

Milliamp (mA) = 1/1000 of an ampere

Microamp (μA) = 1/1,000,000 of an ampere

Angstrom (Å) = 1/10,000,000,000 of a meter

Nanometer (nm) = 1/1,000,000,000 of a meter

Hertz (Hz) = 1 cycle per second

Kilohertz (KHz) = 1000 cycles per second

Megahertz (MHz) = 1,000,000 cycles per second

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