Metric prefixes
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Metric Prefixes. Value: Prefix: P ron: Symbol: 10 18 exaex aE 10 15 petapet aP 10 12 teratare aT 10 9 gigajig aG 10 6 megameg aM 10 3 kilokey lok 10 2 hectohek toeh 10dekadek ada. Metric Prefixes. Value: Prefix: P ron: Symbol:

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Metric Prefixes

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Metric prefixes

Metric Prefixes

Value:Prefix:Pron:Symbol:

1018exaex aE

1015petapet aP

1012teratare aT

109gigajig aG

106megameg aM

103kilokey lok

102hectohek toeh

10dekadek ada


Metric prefixes1

Metric Prefixes

Value:Prefix:Pron:Symbol:

10-1decidec id

10-2centicent Ic

10-3millimill Im

10-6micromy kro

10-9nanonan o

10-12picopec o

10-15femtofem tof


Frequencies and wavelengths

Frequencies and Wavelengths

f: (Hz):(m)Relevant Dim:

1300M

1030M

1003M Earth Diam.

1 k300k

10 k30 k Mnt. Everest

100 k3 k

Radio Waves


Frequencies and wavelengths1

Frequencies and Wavelengths

f: (Hz):(m)Relevant Dim:

  • M300mRedwool Tree

  • M30m

    100 M3m

  • G300mmHydrogen Line

    10 G30mm

    100 G3mm

    Radio Waves


Frequencies and wavelengths2

Frequencies and Wavelengths

f: (Hz):(m)Relevant Dim:

  • T300mBacterium

  • T30m

    100 T3m

    Infrared

  • P300mVirus Visible

  • P30m UV

  • P3m X-Rays


Frequencies and wavelengths3

Frequencies and Wavelengths

f: (Hz):(m)Relevant Dim:

  • E300mAtomX-Rays

    10E30mX-Rays

    100 E3mGama Rays

  • 1021300mGama Rays

    10102130mGama Rays

    100 10213mGama Rays


Radio frequency band names

Radio Frequency Band Names

Name:Freq:Use:

ELF3-30 Hz

SLF30-300 HzPower Grids

ULF300-3000 Hz

VLF3-30 kHzSubmarines

LF30-300 kHzBeacons

MF300-3000 kHzAM Broadcast


Radio frequency band names1

Radio Frequency Band Names

Name:Freq:Use:

HF3-30 MHzShortwave

VHF30-300 MHzFM, TV

UHF300-3000 MHzTV, LAN, Cellular

SHF3-30 GHzRadar, GS Sat, data

EHF30-300 GHzRadar, Automotive


Problem

Problem

What is light-year distance?

60 x 60 x 24 x 365 x 3.0 x 108 = 9.46 x 1015 m


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