<Table> <Tr> <Th_colspan="3"> Class </Th> <Th> </Th> <Th> Freq - uency </Th> <Th> Wave - length </Th> <Th> Energy </Th> </Tr> <Tr> <Td> Ionizing radiation </Td> <Td> γ </Td> <Td> Gamma rays </Td> <Td> </Td> <Td> 300 EHz </Td> <Td> 1 pm </Td> <Td> 1.24 M eV </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 30 EHz </Td> <Td> 10 pm </Td> <Td> 124 k eV </Td> </Tr> <Tr> <Td> HX </Td> <Td> Hard X-rays </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 3 EHz </Td> <Td> 100 pm </Td> <Td> 12.4 keV </Td> </Tr> <Tr> <Td> SX </Td> <Td> Soft X-rays </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 300 PHz </Td> <Td> 1 nm </Td> <Td> 1.24 keV </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 30 PHz </Td> <Td> 10 nm </Td> <Td> 124 eV </Td> </Tr> <Tr> <Td> EUV </Td> <Td> Extreme ultraviolet </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 3 PHz </Td> <Td> 100 nm </Td> <Td> 12.4 eV </Td> </Tr> <Tr> <Td> </Td> <Td> NUV </Td> <Td> Near ultraviolet </Td> <Td> </Td> </Tr> <Tr> <Td> Visible </Td> <Td> </Td> <Td> 300 THz </Td> <Td> 1 μm </Td> <Td> 1.24 eV </Td> </Tr> <Tr> <Td> NIR </Td> <Td> Near infrared </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> 30 THz </Td> <Td> 10 μm </Td> <Td> 124 m eV </Td> </Tr> <Tr> <Td> MIR </Td> <Td> Mid infrared </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 3 THz </Td> <Td> 100 μm </Td> <Td> 12.4 meV </Td> </Tr> <Tr> <Td> FIR </Td> <Td> Far infrared </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 300 GHz </Td> <Td> 1 mm </Td> <Td> 1.24 meV </Td> </Tr> <Tr> <Td> Micro - waves and radio waves </Td> <Td> EHF </Td> <Td> Extremely high frequency </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 30 GHz </Td> <Td> 1 cm </Td> <Td> 124 μ eV </Td> </Tr> <Tr> <Td> SHF </Td> <Td> Super high frequency </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 3 GHz </Td> <Td> 1 dm </Td> <Td> 12.4 μeV </Td> </Tr> <Tr> <Td> UHF </Td> <Td> Ultra high frequency </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 300 MHz </Td> <Td> 1 m </Td> <Td> 1.24 μeV </Td> </Tr> <Tr> <Td> VHF </Td> <Td> Very high frequency </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 30 MHz </Td> <Td> 10 m </Td> <Td> 124 n eV </Td> </Tr> <Tr> <Td> HF </Td> <Td> High frequency </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 3 MHz </Td> <Td> 100 m </Td> <Td> 12.4 neV </Td> </Tr> <Tr> <Td> MF </Td> <Td> Medium frequency </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 300 kHz </Td> <Td> 1 km </Td> <Td> 1.24 neV </Td> </Tr> <Tr> <Td> LF </Td> <Td> Low frequency </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 30 kHz </Td> <Td> 10 km </Td> <Td> 124 p eV </Td> </Tr> <Tr> <Td> VLF </Td> <Td> Very low frequency </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 3 kHz </Td> <Td> 100 km </Td> <Td> 12.4 peV </Td> </Tr> <Tr> <Td> </Td> <Td> ULF </Td> <Td> Ultra low frequency </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 300 Hz </Td> <Td> 1 Mm </Td> <Td> 1.24 peV </Td> </Tr> <Tr> <Td> SLF </Td> <Td> Super low frequency </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 30 Hz </Td> <Td> 10 Mm </Td> <Td> 124 f eV </Td> </Tr> <Tr> <Td> ELF </Td> <Td> Extremely low frequency </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> 3 Hz </Td> <Td> 100 Mm </Td> <Td> 12.4 feV </Td> </Tr> <Tr> <Td> </Td> </Tr> <Tr> <Td_colspan="7"> Sources: File: Light spectrum. svg </Td> </Tr> <Tr> <Th_colspan="7"> Legend </Th> </Tr> <Tr> <Td_colspan="7"> <Table> <Tr> <Td> γ = Gamma rays </Td> <Td> MIR = Mid infrared </Td> <Td> HF = High freq . </Td> </Tr> <Tr> <Td> HX = Hard X-rays </Td> <Td> FIR = Far infrared </Td> <Td> MF = Medium freq . </Td> </Tr> <Tr> <Td> SX = Soft X-rays </Td> <Td> Radio waves </Td> <Td> LF = Low freq . </Td> </Tr> <Tr> <Td> EUV = Extreme ultraviolet </Td> <Td> EHF = Extremely high freq . </Td> <Td> VLF = Very low freq . </Td> </Tr> <Tr> <Td> NUV = Near ultraviolet </Td> <Td> SHF = Super high freq . </Td> <Td> VF / ULF = Voice freq . </Td> </Tr> <Tr> <Td> Visible light </Td> <Td> UHF = Ultra high freq . </Td> <Td> SLF = Super low freq . </Td> </Tr> <Tr> <Td> NIR = Near Infrared </Td> <Td> VHF = Very high freq . </Td> <Td> ELF = Extremely low freq . </Td> </Tr> <Tr> <Td> </Td> <Td> </Td> <Td> Freq = Frequency </Td> </Tr> </Table> </Td> </Tr> </Table> <Tr> <Th_colspan="3"> Class </Th> <Th> </Th> <Th> Freq - uency </Th> <Th> Wave - length </Th> <Th> Energy </Th> </Tr>

Which type of em radiation has frequencies in the thousands
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