Measurement multiplication factors designation in SI Units
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Yocto (y)
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Refers to 10-24 factor in SI units (1 yocto m = 0.000000000000000000000001 m)
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Zepto (z)
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Refers to 10-21 factor in SI units (1 zepto m = 0.000000000000000000001 m)
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Atto (a)
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Refers to 10-18 factor in SI units (1 atto m = 0.000000000000000001 m)
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Femto (f)
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Refers to 10-15 factor in SI units (1 femto m = 0.000000000000001 m)
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Pico (p)
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Refers to 10-12 factor in SI units (1 pico m = 0.000000000001 m)
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Nano (n)
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Refers to 10-9 factor in SI units (1 nano m= 0.000000001 m)
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Micro (μ)
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Refers to 10-6 factor in SI units (1 μm = 0.000001 m)
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Milli (m)
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Refers to 10-3 factor in SI units (1 mm = 0.001 m)
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Centi (c)
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Refers to 10-2 factor in SI units (1 cm = 0.01 m)
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Deci (d)
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Refers to 10-1 factor in SI units (1 deci m = 0.1 m)
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Deca (da)
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Refers to 101 factor in SI units (1 decameter = 10 m)
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Hecto (h)
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Refers to 102 factor in SI units (1 hectometer = 100 m)
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Kilo (k)
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Refers to 103 factor in SI units (1 km = 1000 m)
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Mega (M)
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Refers to 106 factor in SI units (1 MHz = 1000000 Hz)
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Giga (G)
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Refers to 109 factor in SI units (1 GHz = 1000000000 Hz)
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Tera (T)
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Refers to 1012 factor in SI units (1 TB = 1000000000000 bytes)
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Peta (P)
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Refers to 1015 factor in SI units (1 PB = 1000000000000000 bytes)
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Exa (E)
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Refers to 1018 factor in SI units (1 EB = 1000000000000000000 bytes)
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Zetta (Z)
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Refers to 1021 factor in SI units (1 ZB = 1000000000000000000000 bytes)
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Yotta (Y)
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Refers to 1024 factor in SI units (1Y byte = 1000000000000000000000000 bytes)
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