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 Wavelengths f: (Hz) :(m)Relevant Dim: 1M300mRedwool Tree 10M30m 100 M3m 1G300mmHydrogen Line 10 G30mm 100 G3mm Radio Waves

Frequencies and Wavelengths f: (Hz) :(m)Relevant Dim: 1T300  mBacterium 10T30  m 100 T3  m Infrared 1P300  mVirus Visible 10P30  m UV 100P3  m X-Rays

Frequencies and Wavelengths f: (Hz) :(m)Relevant Dim: 1E300  mAtomX-Rays 10E30  mX-Rays 100 E3  mGama Rays  mGama Rays  mGama Rays  mGama Rays

Radio Frequency Band Names Name:Freq:Use: ELF3-30 Hz SLF HzPower Grids ULF Hz VLF3-30 kHzSubmarines LF kHzBeacons MF kHzAM Broadcast

Radio Frequency Band Names Name:Freq:Use: HF3-30 MHzShortwave VHF MHzFM, TV UHF MHz TV, LAN, Cellular SHF3-30 GHz Radar, GS Sat, data EHF GHz Radar, Automotive

Problem What is light-year distance? 60 x 60 x 24 x 365 x 3.0 x 10 8 = 9.46 x m

Metric Prefixes Value:Prefix:Pron:Symbol: exaex aE petapet aP teratare aT 10 9 gigajig aG 10 6 megameg aM 10 3 kilokey lok 10 2 hectohek toeh 10dekadek ada

Metric Prefixes Value:Prefix:Pron:Symbol: decidec id centicent Ic millimill Im micromy kro  nanonan o  picopec o  femtofem tof