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Ragtime, also spelled rag-time or rag time, [2] is a musical style that had its peak from the 1890s to 1910s. [1] Its cardinal trait is its syncopated or "ragged" rhythm. [1] Ragtime was popularized during the early 20th century by composers such as Scott Joplin, James Scott and Joseph Lamb. Ragtime pieces (often called "rags") are typically ...
Zone System. The Zone System is a photographic technique for determining optimal film exposure and development, formulated by Ansel Adams and Fred Archer. [1] Adams described the Zone System as " [...] not an invention of mine; it is a codification of the principles of sensitometry, worked out by Fred Archer and myself at the Art Center School ...
Acoustic Doppler Current Profiler. An acoustic doppler current profiler ( ADCP) is a hydroacoustic current meter similar to a sonar, used to measure water current velocities over a depth range using the Doppler effect of sound waves scattered back from particles within the water column. The term ADCP is a generic term for all acoustic current ...
781 pH/Ion Meter pH meter by Metrohm. A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. [2] The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode, and so the pH meter is sometimes ...
Siemens AG (German pronunciation: [ˈziːməns] ⓘ or) is a German multinational technology conglomerate.It is focused on industrial automation, distributed energy resources, rail transport and health technology.
A smart meter is an electronic device that records information—such as consumption of electric energy, voltage levels, current, and power factor—and communicates the information to the consumer and electricity suppliers. Such an advanced metering infrastructure (AMI) differs from automatic meter reading (AMR) in that it enables two-way ...
Microform. Digital scanning of microfilm. A microform is a scaled-down reproduction of a document, typically either photographic film or paper, made for the purposes of transmission, storage, reading, and printing. Microform images are commonly reduced to about 4% or 1⁄25 of the original document size. For special purposes, greater optical ...
The Price Sensitivity Meter (PSM) is a market technique for determining consumer price preferences. It was introduced in 1976 by Dutch economist Peter van Westendorp. The technique has been used by a wide variety of researchers in the market research industry. The PSM approach has been a staple technique for addressing pricing issues for the ...
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