We plan to hang up a huge spectrum in the hallway of our institute to illustrate the frequencies we use in our research. To make this spectrum as descriptive as possible, we still search for more frequencies. If you have a suggestion, please send it to Marc Scheffler.
List of the frequencies that we have collected so far:

Frequency: Application / Effect / Phenomenon ... Source:
0,000011574074 Hz Day Oral Tradition
0,0002777778 Hz Hour Oral Tradition
0,0003-10 Hz Seismographic Waves (Earth Quakes) Randolf Eilenberger
0,016666667 Hz Minute Oral Tradition
0,748 Hz First Pulsar (1967) www.aci.mta.ca
1,0 Hz Second Oral Tradition
1,2 Hz Human Pulse Oral Tradition
<4 Hz "Delta-Band", Human Brain Activity Christian Moll
4-7.5 Hz "Theta-Bband", Human Brain Activity Christian Moll
8-13 Hz "Alpha-Band", Basic Rhythm of Human Brain Activity Christian Moll
>13 Hz "Beta-band", Human Brain Activity Christian Moll
16 Hz - 20 kHz Sound Audible by a Child Gerthsen
16,667 Hz Alternating Current for Railways (e.g. DB) Oral Tradition
ca. 17 Hz Calls of Blue Whales www.pmel.noaa.gov
ca. 20 Hz Oscillations of the Building of Uni Ulm Anne Döhle's Boss
ca. 20-3000 Hz Songs of Humpback Whales www.hervey.com.au
25 Hz Repetition Rate of a TV Screen Christmas Celebration
30 Hz Rotation of Crab-Pulsar (PSR 0531+21) www.seds.org
50 Hz Alternating Current Oral Tradition
60 Hz Alternating Current USA Oral Tradition
66-350 Hz Bass (Singing Voice) Gerthsen via Anne Döhle
78 Hz Communication with submerged submarines (ELF system of the US Navy) Christian Peineke, w3.nrl.navy.mil
100 Hz Molecular Motors Wrachtrup
100-520 Hz Tenor (Singing Voice) Gerthsen via Anne Döhle
ca. 100-4000 Hz Calls of Humpback Whales newport.pmel.noaa.gov/whales/
130-700 Hz Alto (Singing Voice) Gerthsen via Anne Döhle
200-1050 Hz Soprano (Singing Voice) Gerthsen via Anne Döhle
250 Hz -150 kHz Sounds Produced by Bottlenose Dolphins www.seaworld.org
440 Hz Standard Pitch A Oral Tradition
1,2 kHz Turbomolecular Pump Leybold Catalogue
1,8-2 kHz Squaking Brake Disks Eva Sittig
2,274 kHz Search for Avalanche Victims (Less Common Nowadays) Thomas Pfrommer
5 kHz Dental Drill Robert Kopp
5-20 kHz "Radio" for Cinemas, Churches, Theaters, and Alarm Systems "Die Zeit"
9-10 kHz medical applications "Die Zeit"
20-150 kHz Ultrasonic Orientation of Bats Anne Döhle
44,1 kHz Sample Rate CD-Players Philipp Haas
77,5 kHz Dissemination of the Legal Time via DCF77 Kai-Erik Ballak, www.dcf77.de, www.ptb.de
100 kHz LORAN-C (Navigation for Aviation and Navigation) www.ntia.doc.gov
108 kHz Clock Speed Intel 4004 Processor (1971) www.intel.com
148-284 kHz Long Wave (Radio) "Die Zeit"
200 kHz Clock Speed Intel 8008 Processor (1972) www.intel.com
457 kHz Search for Avalanche Victims Thomas Pfrommer
500 kHz Morse Telegraphy "Die Zeit"
526-1606 kHz Medium Wave (Radio) "Die Zeit"
1,939 MHz Red Cross "Die Zeit"
2 MHz Clock Speed Intel 8080 Processor (1974) www.intel.com
2-4 MHz Ultrasound Transmission Camera (RU Bochum) TK aktuell
2,025 MHz Weather Beacon "Die Zeit"
2,198 MHz Calibration of Bearings on Ships "Die Zeit"
3,95-19,8MHz Short Wave (Radio) "Die Zeit"
5 MHz Clock Speed Intel 8088 Processor (1979) www.intel.com
6,7 MHz Radiation Therapy "Die Zeit"
10,003 MHz Rescue of Space Vehicles "Die Zeit"
12 MHz Clock Speed Intel 80286 Processor (1982) www.intel.com
13,56 MHz RF Sputtering Bruno Gompf
15 MHz Dissemination of the Legal Time "Die Zeit"
16 MHz Clock Speed Intel386® DX Processor (1985) www.intel.com
20,005 MHz Sputnik Signal 1957 www.nytimes.com
25 MHz Clock Speed Intel486® DX Processor (1989) www.intel.com
26,990 MHz Remote Control of models and toys "Die Zeit"
26,965-27,405 MHz CB-Radio www.raycom.co.uk
27,12 MHz Short Wave Therapy (Thermotherapy) www.mz-verlag.de
27,12 MHz Optical Q-Switch Kai-Erik Ballak
27,601-28 MHz Weather Balloons www.raycom.co.uk
34 MHz Wireless Microphones "Die Zeit"
35,0-35,25 MHz Remote Control of Model Planes www.raycom.co.uk
39,9375-40,1125 MHz Wireless Telephones www.raycom.co.uk
40,002 MHz Sputnik Signal 1957 www.nytimes.com
40,665-40,955 MHz Remote Control of Model Cars and Ships www.raycom.co.uk
46-47 MHz Windprofiling Radar Systems "Die Zeit"
ca. 47 MHz Military "Die Zeit"
47-68 MHz TV "Die Zeit"
66 MHz Clock Speed Pentium® Processor (1994) www.intel.com
74,215-87,255 MHz BOS (Emergency Medical Services) Stephan Mair
ca. 75 MHz Military "Die Zeit"
78 MHz Railway Mobile Radio "Die Zeit"
ca. 80 MHz Military "Die Zeit"
87,5-105 MHz FM Broadcasting "Die Zeit"
92,1 MHz NDR 2 (Braunschweig) NDR
92,2 MHz SWR 3 (Stuttgart) SWR
108-118 MHz Aeronautical Radionavigation www.ntia.doc.gov, "Die Zeit"
121,5 MHz Distress Beacons ("outdated") www.cospas-sarsat.org
136 MHz Weather Satellites "Die Zeit"
137-138 MHz Weather Satellites www.raycom.co.uk
138-144 MHz Military Mobile Radio "Die Zeit"
143 MHz Space Communication (e.g. TUBSAT, MIR) Kai-Erik Ballak
144 MHz Amateur Radio "Die Zeit"
ca. 145 MHz Military "Die Zeit"
149 MHz Walkie-Talkies "Die Zeit"
149 MHz Bearing of Stolen Cars "Die Zeit"
149,9-150,05 MHz Satellite Navigation www.raycom.co.uk
150,05-152 MHz Radioastronomy www.raycom.co.uk
160 MHz Analog Cellular Phones ("B-Netz") "Die Zeit"
167,56-173,98 MHz BOS (Emergency Medical Services) Stephan Mair
174-230 MHz TV "Die Zeit"
243,0 MHz Military Aircraft Emergency (incl. Space Shuttle) NASA
259,7 MHz Space Shuttle NASA
279,0 MHz Space Shuttle NASA
296,8 MHz Space Shuttle NASA
326,5-328,5 MHz Astronomy, Deuterium Spectral Line www.raycom.co.uk
300 MHz Clock Speed Pentium® II Processor (1997) www.intel.com
ca. 300 MHz Military "Die Zeit"
ca. 350 MHz Military "Die Zeit"
400 MHz Wireless Phones "Die Zeit"
402-405 MHz Active Medical Implants www.ero.dk
406 MHz Emergency Beacons www.cospas-sarsat.org
435 MHz Amateur Radio "Die Zeit"
433,92 MHz Decimeterwave Therapy (Thermotherapy) www.mz-verlag.de
449 MHz Commercial Windprofiling Radar Systems (up to Troposphere) formerly www.windprofiler.com
450-470 MHz Analog Cellular Phones ("C-Netz") "Die Zeit"
470-838 MHz TV "Die Zeit"
482 MHz Commercial Windprofiling Radar Systems (up to Troposphäre) formerly www.windprofiler.com
500 MHz Clock Speed Pentium® III Processor (February 1999) www.intel.com
594 MHz Radar 50 cm www.raycom.co.uk
863-865 MHz Wireless Audio Applications www.ero.dk
900 MHz Digital Mobile Phones ("D-Netz") "Die Zeit"
915 MHz Commercial Windprofiling Radar Systems (Ground Level) formerly www.windprofiler.com
915-960 MHz Mobile Phones, GSM www.raycom.co.uk
933 MHz Clock Speed Pentium® III Processor (May 2000) www.intel.com
960-1215 MHz Air Traffic Control and Navigation "Die Zeit"
960-1215 MHz Military Air Traffic Control and Navigation www.ntia.doc.gov
966 MHz +/- 4MHz Astronomy www.raycom.co.uk
1,030-1,090 GHz Radar Beacon Including Flight Information (ATCRBS and MODE-S) www.ntia.doc.gov
1-3 GHz "Project Phoenix" (SETI) www.seti.org
ca. 1,2 GHz Military "Die Zeit"
1,22760 GHz GPS Satellite Navigation Stephan Mair
1,246 GHz Russian GPS GLONASS www.raycom.co.uk
1,290 GHz Commercial Windprofiling Radar Systems (Ground Level) formerly www.windprofiler.com
1,4-1,427 GHz Astronomy, SETI, Hydrogen Line www.raycom.co.uk
1,420 GHz Hyperfinestructuretransition in Hydrogen (F=0 to F=1, "21 cm-Line"), First Evidence of Interstellar Hydrogen Martin Müller
1,5 GHz Clock Speed Pentium® 4 Processor (November 2000) www.intel.com
1,525 GHz Satellite Phones (Immersat) www.raycom.co.uk
1,57542 GHz GPS Satellite Navigation Stephan Mair
ca. 1,6 GHz Military "Die Zeit"
1,612 GHz Hyperfine Line of OH home.achilles.net
1,665 GHz Hyperfine Line of OH home.achilles.net
1,667 GHz Hyperfine Line of OH home.achilles.net
1,670 GHz "First Natural Maser" in the Orion Nebula (OH groups) home.achilles.net
1,720 GHz Hyperfine Line of OH home.achilles.net
ca. 1,7 GHz Military "Die Zeit"
ca. 1,75 GHz Military "Die Zeit"
1,8 GHz Digital Mobile Phones ("E-Netz") "Die Zeit"
1,880-1,900 GHz Digital Pordless Phones for Home and Office (DECT) and WLL (wireless local loop) "Die Zeit", www.raycom.co.uk
2-2,2 GHz UMTS "Die Zeit"
2,3 GHz Wireless Video Cameras "Die Zeit"
2,4 GHz Microwave Ovens, Bluetooth, Local Nets "Die Zeit"
2,402-2,480 GHz Bluetooth www.raycom.co.uk
2,450 GHz Microwave Ovens www.eng2.uconn.edu
2,450 GHz Microwave Therapy (Thermotherapy) www.mz-verlag.de
2,900-3,100 GHz Shipborne Navigation Radars www.ntia.doc.gov
3,000 GHz Radar 10 cm www.raycom.co.uk
ca. 3 GHz Military "Die Zeit"
ca. 4 GHz Military "Die Zeit"
4,200-4,400 GHz Airborne Radar Altimeters www.ntia.doc.gov
5,2 GHz Corporate Networks "Die Zeit"
ca. 5,4 GHz Military "Die Zeit"
5,460-5,650 GHz Shipborne Navigation Radars www.ntia.doc.gov
5,620 GHz Precipitation Radar Karlsruhe (C-Band) www.radar-info.de
5,66 GHz Precipitation Radar ETH Zürich (C-Band) www.radar.ethz.ch
5,7 GHz Shipborne Navigation Radars "Die Zeit"
5,8 GHz Level Detectors for Liquids Herbert Schroth
ca. 6 GHz Military "Die Zeit"
ca. 8 GHz Military "Die Zeit"
9,000-9,200 GHz Precision Approach Radars (Military) www.ntia.doc.gov
9,192631770 GHz Base Frequency of Caesium Atomic Clocks www.ptb.de
9,300-9,500 GHz Most Frequently Used Band for Shipborne Navigation Radars www.ntia.doc.gov
9,375 GHz Precipitation Radar Bonn (X-Band) www.meteo.uni-bonn.de
9,400 GHz Radar 3 cm www.raycom.co.uk
10,6-10,7 GHz Space Research "Die Zeit"
10,7 GHz Satellite TV www.raycom.co.uk
12 GHz TV Satellites "Die Zeit"
ca. 20 GHz Military "Die Zeit"
24 GHz Level Detectors for Liquids Herbert Schroth
24 GHz Adaptive Cruise Control (Greyhound) Herbert Schroth
24 GHz First Maser (Ammoniak) home.achilles.net
ca. 40 GHz Military "Die Zeit"
65-66 GHz Exploration by Satellite "Die Zeit"
77 GHz Adaptive Cruise Control ("Mercedes S-Klasse") Herbert Schroth
85 GHz Superconducting Energy Gap of Aluminum Ashcroft/Mermin
ca. 100 GHz Military "Die Zeit"
115,271 GHz Rotation of CO (Transition J=1 to J=0) Chantry
ca. 150 GHz Military "Die Zeit"
160 GHz Maximum of Cosmic Background Radiation Lexikon der Physik
170-175 GHz Radio between Satellites "Die Zeit"
230,537 GHz Rotation of CO (Transition J=2 to J=1) Chantry
0,3-6 THz Far IR DIN 5031
345,8 GHz Rotation of CO (Transition J=3 to J=2) Chantry
650 GHz Superconducting Energy Gap of Lead Buckel
690 GHz Superconducting Energy Gap of Niobium Buckel
804,7509 GHz HCN Laser Frequency Chantry
890,76 GHz HCN Laser Frequency Chantry
878 GHz Low-Frequency Transverse Mode of Interstital Oxygen in Silicon Frank Zeller
1,77 THz "First Natural Laser" in Star MWC 349 home.achilles.net
2,527 THz H2O Laser Frequency Chantry
3,557143 THz D2O Laser Frequency Chantry
6-100 THz Middle IR DIN 5031
8 THz Superconducting Energy Gap of the High Temperature Superconductor BSCCO Michael Dumm
10,718073 THz H2O Laser Frequency Chantry
28,3 THz CO2 Laser (Industrial Applications, Surgery) www.ehs.ukans.edu
ca. 46,8-49,5 THz Bending Oscillation of -NH2 Bruker Almanac
ca. 48,9-50,4 THz Stretching Oscillations of C=C Double Bond Bruker Almanac
58,024341 THz CO Laser Frequency Chantry
ca. 63-64,2 THz Stretching Oscillations of -C///CH Triple Bond Bruker Almanac
ca. 64,5-67,8 THz Stretching Oscillations of -C///C- Triple Bond Bruker Almanac
ca. 70,5 THz Stretching Oscillations of the Double Bonds in CO2 Bruker Almanac
ca. 80,7-109,5 THz Stretching Oscillations of Hydrogen in -O-H or free OH Bruker Almanac
ca. 85,8-88,8 THz Stretching Oscillations of Hydrogen in -CH3 Bruker Almanac
ca. 86,4-86,7 THz Stretching Oscillations of Hydrogen in \-/CH Bruker Almanac
ca. 92,1-92,7 THz Stretching Oscillations of Hydrogen in C=CH2 Bruker Almanac
97,0 THz Er:YAG Laser (Applications e.g. Surgery, Tooth Drilling, Leg Drilling) www.laser.nu
ca. 99-105 THz Stretching Oscillations of Hydrogen in -NH2 and =NH Bruker Almanac
ca. 100 THz Analysis of Residual Gases in the Atmosphere Peter Weber
100-215 THz Near IR-A DIN 5031
120-375 THz IR-Spectroscopy for Trash Seperation DSD Cyclebowl
120-375 THz Near Infrared Camera and Multi-Object Spectrometer (Hubble Space Telescope) www.stsci.edu
141 THz Ho:YAG Laser (Applications e.g. Surgery, Sterilization of Tooth Roots) www.laser.nu
215-385 THz Near IR-B DIN 5031
273-2500 THz Wide Field Planetary Camera 2 (Hubble Space Telescope) www.stsci.edu
273-2610 THz Space Telescope Imaging Spectrograph (Hubble Space Telescope) www.stsci.edu
282 THz Nd:YAG Laser (Applications e.g. Coagulation of Tissue) Stephan Mair, Peter Weber & www.laser.nu
331 THz GaAs Laser (Applicitions e.g. Treatment of Back, Neck, Shoulders, Knee) www.laser.nu
366 THz GaAlAs Laser (Applications e.g. Treatment of Tendons, Varicose Veins) www.laser.nu
385-790 THz Visible Light DIN 5031
432 THz Ruby Laser (Applications e.g. Removal of Tattoos, Hair) www.laser.nu
441-468 THz Light Absorption of Chlorophyll Gerthsen
472 THz GaAlInP Laser (Applicaitons e.g. Skin and Mucous Membranes) www.laser.nu
474 THz Helium-Neon Laser (Applicaitons e.g. Skin and Mucous Membranes) Stephan Mair & www.laser.nu
564 THz KTP 532 Laser (Applicaitons e.g. Skin-Deep Blood Vessels, Tattoos) www.laser.nu
583 THz Argon Laser (Applications e.g. Dermatology, Eye Surgery) www.laser.nu
678 THz HeCd Laser (z.B. for Holography) www.mellesgriot.com
749-937 THz UV-A, Direct Tanning of Human Skin Oliver Schumann, www.drogistenverband.at
790-950 THz Near UV DIN 5031
854 THz XeF Excimer Laser Frequency tftlcd.kyunghee.ac.kr
882 THz Maximum of Immediate Skin Pigmentation DIN 5031
890 THz N2 Excimer Laser Frequency www.estpak.ee
937-1071 THz UV-B, Causes Sunburn and Leukaemia Oliver Schumann, www.drogistenverband.at
950-1070 THz Middle UV DIN 5031
973 THz XeCl Excimer Laser Frequency (z.B. Medical Applications) tftlcd.kyunghee.ac.kr
1007 THz Maximum verzögerter Hautpigmentierung DIN 5031
1063 THz XeBr Excimer Laser Frequency tftlcd.kyunghee.ac.kr
1070-1500 THz Far UV DIN 5031
1071-2998 THz UV-C, Absorbed by Ozone Layer Oliver Schumann, www.drogistenverband.at
1195 GHz "First Natural UV-Laser" in Eta Carinae home.achilles.net
1196 GHz "First Natural UV-Laser" in Eta Carinae home.achilles.net
1209 THz KrF Excimer Laser Frequency (e.g. Medical Applications) tftlcd.kyunghee.ac.kr
1350 THz KrCl Excimer Laser Frequency tftlcd.kyunghee.ac.kr
1500-3000 THz Vacuum UV DIN 5031
1553 THz ArF Excimer Laser Frequency (e.g. Medical Applications) tftlcd.kyunghee.ac.kr
1713 THz ArCl Excimer Laser Frequency tftlcd.kyunghee.ac.kr
1910 THz F2 Excimer Laser Frequency www.estpak.ee
1666-3289 THz Far Ultraviolet www.raycom.co.uk
2684 THz Cutoff of MgF2 Windows formerly palcom03.postech.ac.kr
2877 THz Cutoff of LiF Windows formerly palcom03.postech.ac.kr
3289-30000 THz Extreme Ultraviolet www.raycom.co.uk
5131 THz HeI www.focus-gmbh.com
9865 THz HeII www.focus-gmbh.com
10000-50000 THz Wide Field Camera (WFC) of ROSAT wave.xray.mpe.mpg.de
30000-500000 THz X-ray Telescope (XRT) of ROSAT wave.xray.mpe.mpg.de
> 30000 THz Gamma Rays www.raycom.co.uk
69000-129000 THz Water Window (X-Ray Microscopy) roentgen.physik.uni-goettingen.de, uni-duesseldorf.de
194600 THz Copper KA1 X-Ray Line Aggarval
303100 THz MgKA www.focus-gmbh.com
359500 THz AlKA www.focus-gmbh.com
1,23 · 1020 Hz Electron Mass Oral Tradition