Orders of magnitude (frequency)
This is for comparison purposes, a set of frequencies of different orders of magnitude. The data can often be understood as a "typical"; the converted values are rounded.
Basic unit of frequency in the International System of Units is 1 Hertz ( unit symbol Hz), the symbols f
Frequencies below 1 Hz
- " Once a year" ≈ 0.0000000317 Hz = 3.17 · 10-8 Hz - rotational frequency of the Earth around the Sun, as in use as the return period of natural events
- "Daily" ≈ 0.0000116 Hz = 1.16 · 10-5 Hz - self-rotation frequency of the earth, frequency of day-night change
- 0.5 to 0.75 Hz ≈ 6:10 -1 Hz - resting heart rate of a trained endurance athlete
1 Hz to 10 Hz
- ≈ 1 to 1.25 Hz - resting heart rate of a healthy adult human
- ≈ 2 Hz - resting heart rate of a newborn
- 7.83 Hz - fundamental frequency of the Schumann resonance is roughly equivalent to the speed of light / circumference of the earth. Also not entirely correct called resonant frequency of the Earth
10 Hz to 100 Hz
100 Hz to 1000 Hz (1 KHz)
- 400 Hz - frequency of the electrical system voltage of an aircraft
- 440 Hz - The pitch a ' ( underlined is a), after an orchestra is tuned is today 440 Hz ( or slightly higher).
- 716 Hz - The highest measured frequency of rotation of a neutron star.
1 kHz to 10 kHz
10 kHz to 100 kHz
100 kHz to 1000 kHz ( 1 Mhz )
- 450 kHz - 470 kHz - 2 for intermediate frequency radio receiver, usually 455 kHz ( 1st IF usually 10.7 MHz)
- 457 kHz - European frequency for avalanche devices
- 490 kHz - Navtex with messages for navigation
- 518 kHz - Navtex
- 531 kHz - former medium-wave transmitter Beromunster of Swiss Radio DRS
- 576 kHz - medium wave transmitter Muehlacker the SWR
- 801 kHz - medium wave transmitter Ismaning of BR
- 900 kHz - medium wave transmitter Milano RAI
- 936 kHz - medium wave transmitter Bremen, Bremen Radio Program 1
- 972 kHz - medium wave transmitter Hamburg- Billwerder the NDR
- 985 kHz - clock frequency of the CPU of the C64 (1983, PAL version )
- 990 kHz medium wave transmitter Berlin- Britz Germany radio culture
1 MHz to 10 MHz
10 MHz to 100 MHz
100 MHz to 1000 MHz ( 1 GHz)
1 GHz to 10 GHz
10 GHz to 100 GHz,
- 22.235 GHz - absorption line of water
- 60 GHz - absorption line of oxygen
100 GHz to 1000 GHz (1 THz)
1 THz to 10 THz
- Terahertz radiation
10 THz to 100 THz
- 20 THz ( 15 microns ) - far infrared, ( engl. far infrared FIR)
- 20 THz ( 15 microns ) - long-wave infrared ( engl. long wavelength IR, LWIR ), IR -C DIN
- 28.2823 THz ( 10.6 microns ) - Carbon dioxide laser
- 37.5 THz (8 microns ) - long-wave infrared ( engl. long wavelength IR, LWIR ), IR -C DIN
- 37.5 THz (8 microns ) to 100 THz (3 microns ) - medium -wave infrared (English mid wavelength IR, MWIR ), IR -C DIN, also intermediate -IR ( engl. intermediate- IR, IIR)