Orders of magnitude (frequency)
To help compare different orders of magnitude, the following list describes various frequencies, which is measured in hertz.
Factor (Hz) |
Multiple | Value | Item |
---|---|---|---|
10−18 | 1 attohertz (aHz) | ~2.29 aHz | The Hubble Constant (once in 13.8 billion years) |
10–17 | 10 aHz | ~79 aHz | Supercontinent cycle |
10−15 | 1 femtohertz (fHz) | ~3 fHz | Sound waves created by a supermassive black hole in the Perseus cluster[1] |
10−12 | 1 picohertz (pHz) | ||
10−11 | 10 pHz | ~31.71 pHz | Once per millennium |
10−10 | 100 pHz | ~317.1 pHz | Once per century |
10−9 | 1 nanohertz (nHz) | ~1 nHz | Once per generation |
~3.171 nHz | Once per decade | ||
10−8 | 10nHz | 11.6699016 nHz | Once in a blue moon[2] |
~31.71 nHz | Yearly (or Earth's orbital frequency) | ||
10−7 | 100 nHz | ~380.5 nHz | Monthly (or the Moon's orbital frequency) |
~413 nHz | Average menstrual cycle (28 days) | ||
10−6 | 1 microhertz (µHz) | ~1.653 µHz | Weekly |
10−5 | 10 µHz | ~11.57 µHz | Daily (or Earth's rotation frequency) |
10−4 | 100 µHz | ~277.8 µHz | Once per hour |
10−3 | 1 millihertz (mHz) | ||
10−2 | 1 centihertz (cHz) | ~16.667 mHz | One rpm |
10−1 | 1 decihertz (dHz) | ||
100 | 1 hertz | 1 to 1.66 Hz | Approximate frequency of an adult human's resting heart beat |
1 Hz | 60 bpm, common tempos in music. | ||
2 Hz | 120 bpm, common tempos in music. | ||
101 | 1 decahertz (daHz) | 10 Hz | Cyclic rate of a typical automobile engine at idle (equivalent to 600 rpm) |
12 Hz | Acoustic — the lowest possible frequency that a human can hear[3] | ||
27.5 Hz | Acoustic — the lowest musical note (A) playable on a normally-tuned standard piano | ||
50 Hz | Electromagnetic — standard AC mains power (European AC, Tokyo AC) Refresh Rate of PAL and SECAM CRT Televisions | ||
60 Hz | Electromagnetic — standard AC mains power (American AC, Osaka AC) Refresh Rate of NTSC CRT Televisions and Standard Refresh Rate of Computer Monitors | ||
102 | 1 hectohertz (hHz) | 100 Hz | Cyclic rate of a typical automobile engine at redline (equivalent to 6000 rpm) |
261.626 Hz | Acoustic — the musical note middle C | ||
440 Hz | Acoustic — concert pitch (A above middle C), used for tuning musical instruments | ||
103 | 1 kilohertz (kHz) | 4.186 kHz | Acoustic — the highest musical note (C8) playable on a normally-tuned standard piano |
8 kHz | ISDN sampling rate | ||
104 | 10 kHz | 14 kHz | Acoustic — the typical upper limit of adult human hearing |
17.4 kHz | Acoustic — a frequency known as The Mosquito, which is generally only audible to those under the age of 24. | ||
105 | 100 kHz | 740 kHz | The clock speed of the world's first commercial microprocessor, the Intel 4004 (1971) |
106 | 1 megahertz (MHz) | 530 kHz to 1.710 MHz | Electromagnetic — AM radio broadcasts |
1 MHz to 8 MHz | Clock speeds of early home/personal computers (mid-1970s to mid-1980s) | ||
107 | 10 MHz | 13.56 MHz | Electromagnetic — Near field communication |
108 | 100 MHz | 88 MHz to 108 MHz | Electromagnetic — FM radio broadcasts |
902 to 928 MHz | Electromagnetic — common cordless telephone frequency in the US | ||
109 | 1 gigahertz (GHz) | 1.42 GHz | Electromagnetic — the hyperfine transition of hydrogen, also known as the hydrogen line or 21 cm line |
2.4 GHz | Electromagnetic — microwave ovens, Wireless LANs and cordless phones (starting in 1998). | ||
2.6-3.8 GHz | A common desktop processor speed as of 2014 | ||
4.7 GHz | AMD FX-9790 clock speed, fastest commercial processor as of 2013 | ||
5.8 GHz | Electromagnetic — cordless phone frequency introduced in 2003 | ||
8.8 GHz | Highest ever CPU frequency after overclocking, set on an AMD FX-8350 on 19 November 2012[4] | ||
1010 | 10 GHz | 3 GHz to 30 GHz | Electromagnetic — super high frequency |
60 GHz | Electromagnetic — 802.11ad Wi-Fi (WiGig) introduced in 2010 | ||
1011 | 100 GHz | 160.2 GHz | Electromagnetic — peak of cosmic microwave background radiation |
845 GHz | Fastest transistor (Dec. 2006).[5] | ||
1012 | 1 terahertz THz | The Terahertz gap | |
1013 | 10 THz | 21 THz to 33 THz | Electromagnetic — infrared light used in thermal imaging, for example for night vision |
31.5 THz | Electromagnetic — peak of Black-body radiation emitted by human body | ||
1014 | 100 THz | 428 THz to 750 THz | Electromagnetic — visible light, from red to violet |
1015 | 1 petahertz PHz | 2.47 PHz | Electromagnetic — Lyman-alpha line |
1016 | 10 PHz | 30 PHz | Electromagnetic — X-rays |
1017 | 100 PHz | ||
1018 | 1 exahertz EHz | ||
1019 | 10 EHz | ||
1020 | 100 EHz | 300 EHz + | Electromagnetic — Gamma rays |
1021 | 1 zettahertz ZHz | ||
1027 | 1000 YHz | 3.9×1027 Hz | Highest energy (16 TeV) gamma ray detected, from Markarian 501.[6] |
1043 | 10 quintillion YHz | 1.85×1043 Hz | Planck frequency, the inverse of the Planck time |
See also
References
- ↑ "Black Hole Sound Waves - NASA Science".
- ↑ Google Calculator Result for "once in a blue moon"
- ↑ 20 Hz is considered the normal low frequency limit of human hearing. When pure sine waves are reproduced under ideal conditions and at very high volume, a human listener will be able to identify tones as low as 12 Hz. Olson, Harry F. (1967). Music, Physics and Engineering. Dover Publications. p. 249. ISBN 0-486-21769-8.
- ↑ "CPU-Z Validator World Records".
- ↑ highbeam.com - Fastest Transistor Approaches Terahertz Speed.(Brief article), 2007-01-01
- ↑ Ultra-high-energy gamma ray
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