Encyclopedia - International Bureau Of Weights And Measures: Encyclopedia - International Bureau Of Weights And Measures
The International Bureau of Weights and Measures is the English name of the Bureau international des poids et mesures (BIPM, often writte...   » Read the article

Encyclopedia - Si: Encyclopedia Ii - Si - History
The metric system was officially adopted in France after the French Revolution. During the history of the metric system a number of varia...   » Read the article

Encyclopedia - Decibel: Encyclopedia Ii - Decibel - Uses
Decibel - Acoustics. The decibel unit is often used in acoustics to quantify sound levels relative to some 0 dB reference. The referenc...   » Read the article

Encyclopedia - Si: Encyclopedia Ii - Si - History
The metric system was created during the French Revolution. On August 1, 1793 the National Convention adopted the new decimal "metre" wit...   » Read the article

Encyclopedia - Decibel: Encyclopedia Ii - Decibel - Uses
Decibel - Acoustics. The decibel unit is often used in acoustics to quantify sound levels relative to some 0 dB reference. The referenc...   » Read the article

Encyclopedia - Si: Encyclopedia Ii - Si - Cultural Issues
The swift worldwide adoption of the metric system as a tool of economy and everyday commerce was based mainly on the lack of customary sy...   » Read the article

Encyclopedia - Decibel: Encyclopedia Ii - Decibel - Definition
An intensity I or power P can be expressed in decibels with the standard equation where I0 and P0 are a specified reference intens...   » Read the article

Encyclopedia - Si: Encyclopedia Ii - Si - Si Writing Style
SI - Spelling variations. Several nations, notably the United States, typically use the spellings 'meter' and 'liter' instead of 'metr...   » Read the article

Encyclopedia - Decibel: Encyclopedia Ii - Decibel - Typical Abbreviations
Decibel - Absolute measurements. dBm or dBmW  dB(1 mW) — power measurement relative to 1 milliwatt. dBW  dB(1 W) — same...   » Read the article

Encyclopedia - Decibel: Encyclopedia Ii - Decibel - Reckoning
Decibels are handy for mental calculation, because adding them is easier than multiplying ratios. First, however, one has to be able to c...   » Read the article

Encyclopedia - Decibel: Encyclopedia Ii - Decibel - History Of Bels And Decibels
A bel (symbol B) is a unit of measure of ratios, such as power levels and voltage levels. It is mostly used in telecommunication, electro...   » Read the article

Encyclopedia - Si: Encyclopedia Ii - Si - Cultural Issues
The swift worldwide adoption of the metric system as a tool of economy and everyday commerce was based mainly on the lack of customary sy...   » Read the article

Encyclopedia - Decibel: Encyclopedia Ii - Decibel - Typical Abbreviations
Decibel - Absolute measurements. dBm or dBmW  dB(1 mW) — power measurement relative to 1 milliwatt. dBW  dB(1 W) — same...   » Read the article

Encyclopedia - Decibel: Encyclopedia Ii - Decibel - History Of Bels And Decibels
A bel (symbol B) is a unit of measure of ratios, such as power levels and voltage levels. It is mostly used in telecommunication, electro...   » Read the article

Encyclopedia - Decibel: Encyclopedia Ii - Decibel - Reckoning
Decibels are handy for mental calculation, because adding them is easier than multiplying ratios. First, however, one has to be able to c...   » Read the article

Encyclopedia - Si: Encyclopedia Ii - Si - Units
The international system of units consists of a set of units together with a set of prefixes. The units of SI can be divided into two sub...   » Read the article

Encyclopedia - Decibel: Encyclopedia Ii - Decibel - Definition
An intensity I or power P can be expressed in decibels with the standard equation where I0 and P0 are a specified reference intens...   » Read the article

Encyclopedia - Si: Encyclopedia Ii - Si - Si Writing Style
SI - Spelling variations. Several nations, notably the United States, typically use the spellings 'meter' and 'liter' instead of 'metr...   » Read the article

Encyclopedia - Si: Encyclopedia Ii - Si - Units
The international system of units consists of a set of units together with a set of prefixes. The units of SI can be divided into two sub...   » Read the article