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I'm not sure what you intended to ask, but the frequency of electromagnetic radiation increases as the positive real numbers: from approaching the limit of zero Hz at the low end to approaching the limit of infinite Hz at the high end.

Parts of this complete spectrum of frequencies have been given names:

  1. Extremely Low Frequencies - 3 Hz to 30 Hz
  2. Super Low Frequencies - 30 Hz to 300 Hz
  3. Ultra Low Frequencies - 300 Hz to 3 kHz
  4. Very Low Frequencies - 3 kHz to 30 kHz
  5. Low Frequencies - 30 kHz to 300 kHz
  6. Medium Frequencies - 300 kHz to 3 MHz
  7. High Frequencies - 3 MHz to 30 MHz
  8. Very High Frequencies - 30 MHz to 300 MHz
  9. Ultra High Frequencies - 300 MHz to 3 GHz
  10. Super High Frequencies - 3 GHz to 30 GHz
  11. Extremely High Frequencies - 30 GHz to 300 GHz
  12. Tremendously High Frequencies - 300 GHz to 3 THz
  13. Infra Red - 300 GHz to 430 THz
  14. Visible Light - 430 THz to 790 THz
  15. Ultra Violet - 790 THz to 30 PHz
  16. X-Rays - 30 PHz to 30 EHz
  17. Gamma Rays - 30 EHz and up

All frequencies below 3 THz can also be called Radio Waves because they can be used for various types of Radio communication and related applications.

NATO divides Radio Waves into the following bands:

  1. A band - 0 Hz to 250 MHz
  2. B band - 250 MHz to 500 MHz
  3. C band - 500 MHz to 1 GHz
  4. D band - 1 GHz to 2 GHz
  5. E band - 2 GHz to 3 GHz
  6. F band - 3 GHz to 4 GHz
  7. G band - 4 GHz to 6 GHz
  8. H band - 6 GHz to 8 GHz
  9. I band - 8 GHz to 10 GHz
  10. J band - 10 GHz to 20 GHz
  11. K band - 20 GHz to 40 GHz
  12. L band - 40 GHz to 60 GHz
  13. M band - 60 GHz to 100 GHz

IEEE divides Radio Waves into the following bands:

  1. High Frequencies - 3 MHz to 30 MHz
  2. Very High Frequencies - 30 MHz to 300 MHz
  3. Ultra High Frequencies - 300 MHz to 1 GHz
  4. L band - 1 GHz to 2 GHz
  5. S band - 2 GHz to 4 GHz
  6. C band - 4 GHz to 8 GHz
  7. X band - 8 GHz to 12 GHz
  8. Ku band - 12 GHz to 18 GHz
  9. K band - 18 GHz to 27 GHz
  10. Ka band - 26.5 GHz to 40 GHz
  11. V band - 40 GHz to 75 GHz
  12. W band - 75 GHz to 110 GHz
  13. mm band - 110 GHz to 300 GHz

There are several other naming systems for the various parts/bands of the electromagnetic spectrum.

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June Douglas

Lvl 13
2y ago

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