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Decibel
CHF 49.55
Auf Lager
SKU
4HDJBLH665L
1 Verfügbar 
Geliefert zwischen Mi., 26.11.2025 und Do., 27.11.2025
Details
The decibel (dB) is a logarithmic unit of measurement that expresses the magnitude of a physical quantity (usually power or intensity) relative to a specified or implied reference level. Since it expresses a ratio of two quantities with the same unit, it is a dimensionless unit. A decibel is one tenth of a bel, a seldom-used unit. The decibel is useful for a wide variety of measurements in science and engineering (particularly acoustics, electronics, and control theory) and other disciplines. It confers a number of advantages, such as the ability to conveniently represent very large or small numbers, a logarithmic scaling that roughly corresponds to the human perception of sound and light, and the ability to carry out multiplication of ratios by simple addition and subtraction. The decibel symbol is often qualified with a suffix, which indicates which reference quantity or frequency weighting function has been used. For example, "dBm" indicates that the reference quantity is one milliwatt, while "dBu" is referenced to 0.775 volts RMS.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130219819
- Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
- Sprache Englisch
- Genre Physik & Astronomie
- Größe H220mm x B150mm x T6mm
- Jahr 2009
- EAN 9786130219819
- Format Fachbuch
- ISBN 978-613-0-21981-9
- Titel Decibel
- Untertitel Logarithmic scale, Power (physics), Intensity (physics), Dimensionless quantity, Engineering, Acoustics, Electronics,C ontrol theory
- Gewicht 177g
- Herausgeber Alphascript Publishing
- Anzahl Seiten 108
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