Magnitude (frequency)

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This is a compilation of frequencies of different magnitudes for comparison purposes. The information is often to be understood as “typical values”; the converted values ​​are rounded.

The basic unit of frequency in the international system of units is 1  Hertz ( unit symbol Hz ), the formula symbol .

Frequencies below 1 Hz

  • “Once in a lifetime” ≈ 0.00000000042 Hz = 4.2 · 10 −10 Hz - once in a lifetime, assuming a life expectancy of 75 years
  • “Once a year ” ≈ 0.0000000317 Hz = 3.17 · 10 −8 Hz - the earth's orbital frequency around the sun, for example in use as the annuality of natural events
  • " Daily " ≈ 0.000011574 Hz = 1.1574 · 10 −5 Hz - once per sunny day , mean frequency of day-night alternation.
  • 0.5–0.75 Hz ≈ 6 · 10 −1 Hz - resting pulse of a trained endurance athlete

1 Hz to 10 Hz

10 Hz to 100 Hz

  • 16–20 Hz - lower limit of the human hearing range (lower frequencies: infrasound )
  • 16 ⅔ Hz or 16.7 Hz - frequency of parts of the traction current network in Central Europe
  • 18.20651 Hz - frequency for the 55 ms timer of the IBM Intel and AMD CPU PCs (4.772727 MHz / 4/65536)
  • 24 Hz - frames per second when projecting 35–70 mm films and IMAX
  • 25 Hz - frequency of parts of the traction power network in North America
  • 25 Hz - ringing voltage (also called ringing current, call) is used in telecommunications. Causes the called subscriber to ring
  • 25 Hz - single frames per second of the television standards PAL and SECAM
  • 48 Hz - frames per second when projecting IMAX HD
  • 50 Hz - frequency of the three-phase network in Europe , Australia , most of Asia and Africa and parts of South America, as well as parts of the traction current network in Europe (e.g. France), e.g. the tone , G (Contra-G)
  • 50 Hz - refresh rate of the television standards PAL and SECAM (50 fields per second gives 25 frames per second)
  • 60 Hz - frequency of the three-phase network in North America , parts of South America, Liberia , Saudi Arabia , South Korea , the Philippines and parts of Japan , e.g. the tone B
  • 59.94 Hz - refresh rate of the NTSC television standard
  • 76 Hz - transmitter Sanguine the U.S. NAVY in Republic, Michigan and Clam Lake, Wisconsin
  • 82 Hz - Russian transmitter ZEVS

100 Hz to 1000 Hz (1 kHz)

1 kHz to 10 kHz

10 kHz to 100 kHz

100 kHz to 1000 kHz (1 MHz)

1 MHz to 10 MHz

  • 1.11931818 MHz - Internal BIOS clock frequency of the first IBM PC (4.7727 MHz / 4)
  • 1.386 MHz - Voice of Russia , Bolshakovo
  • 1.422 MHz - Medium wave transmitter Heusweiler
  • 3.57954545 MHz - color subcarrier frequency of the NTSC television standard (39375 kHz / 11)
  • 4.43361875 MHz - color subcarrier frequency of the PAL television standard
  • 4.77272727 MHz - clock frequency of the first PC from IBM (NTSC ColorBurst * 4/3)
  • 6.075 MHz - Deutsche Welle
  • 10.7 MHz - 1st intermediate frequency for VHF radio and CB radio receivers
  • 10.8 MHz - intermediate frequency for radio receivers (significantly less than 10.7 MHz)

10 MHz to 100 MHz

  • 13.56 MHz - carrier frequency for RFID labels (tags) etc. contactless chip cards
  • 20.005 MHz - radio frequency of Sputnik 1, the first man-made Earth satellite in orbit
  • 26.565–27.405 MHz CB radio frequency Germany (80 channels)
  • 40.003 MHz - 2nd radio frequency from Sputnik 1
  • 66 MHz - Highest clock frequency of the first Pentium CPU (P5, 1993)
  • 87.5–108 MHz - terrestrial VHF radio

100 MHz to 1000 MHz (1 GHz)

1 GHz to 10 GHz

10 GHz to 100 GHz

100 GHz to 1000 GHz (1 THz)

  • 118.75 GHz - absorption line of oxygen
  • 183.31 GHz - absorption line of water
  • 248–250 GHz - the highest band approved for amateur radio
  • 275 GHz highest frequency assigned in Germany
  • 300 GHz (1000 microns) - remote infrared (engl. Far Infrared FIR)
  • 325.153 GHz - absorption line of water
  • 487.249 GHz - absorption line of water
  • 556.936 GHz - absorption line of water

1 THz to 10 THz

10 THz to 100 THz

  • Distant - 20 THz infrared , (Engl. Far Infrared FIR) (15 microns)
  • 20 THz - long-wave infrared ( long wavelength IR , LWIR), IR-C according to DIN (15 µm)
  • 28.2823 THz - carbon dioxide laser (10.6 µm)
  • 37.5 THz - long-wave infrared ( long wavelength IR , LWIR), IR-C according to DIN (8 µm)
  • 37.5 to 100 THz - medium-wave infrared (engl. Mid IR wavelength , MWIR), IR-C according to DIN , even intermediate IR (engl. Intermediate-IR , IIR) (8-33 micron)

Frequencies greater than 100 THz

  • 100–214 THz - short wave infrared ( short wavelength IR , SWIR), IR-B according to DIN (3-1.4 µm)
  • 214 THz - near infrared (Engl. Near infrared , NIR), IR-A according to DIN (1.4 microns)
  • 428 THz - near infrared (Engl. Near infrared , NIR), IR-A according to DIN (microns 0.7)
  • 379–476 THz - frequency range of red light ( wavelength 630–790  nm )
  • 476–517 THz - frequency range of orange light (wavelength 580–630 nm)
  • 517–535 THz - frequency range of yellow light (wavelength 560–580 nm)
  • 535–625 THz - frequency range of green light (wavelength 480–560 nm)
  • 625–714 THz - frequency range of blue light (wavelength 420–480 nm)
  • 714–788 THz - frequency range of violet light (wavelength 380–420 nm)
  • 788,265–952,688 THz - UV -A according to DIN 5031, part 7
  • 952,688-1071 THz - UV-B according to DIN 5031, part 7
  • 1.071–2.998 PHz - UV-C according to DIN 5031, part 7
  • 2.466–29.983 PHz - Extreme UV according to ISO -DIS-21348
  • 15–150 PHz - soft X-ray radiation
  • 150–30,000 PHz - hard X-ray radiation
  • > 30 EHz - gamma radiation
  • 322 EHz - frequency of the more energetic gamma radiation from Cobalt-60
  • > 10,000 YHz - Cosmic Gamma Radiation

literature

  • Curt Rint : Handbook for high frequency and electrical technicians Volume 2. 13th edition, Hüthig and Pflaum Verlag GmbH, Heidelberg 1981, ISBN 3-7785-0699-4 .
  • Gregor Häberle, Heinz Häberle, Thomas Kleiber: Expertise in radio, television and radio electronics. 3rd edition, Verlag Europa-Lehrmittel, Haan-Gruiten 1996, ISBN 3-8085-3263-7 .
  • Horst Stöcker: Pocket book of physics. 4th edition, Verlag Harri Deutsch, Frankfurt am Main 2000, ISBN 3-8171-1628-4 .