these harmonics

  • 81Wave equation — Not to be confused with Wave function. The wave equation is an important second order linear partial differential equation for the description of waves – as they occur in physics – such as sound waves, light waves and water waves. It arises in… …

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  • 82Classical guitar technique — This article is about the Contemporary classical guitar technique. For the baroque guitar technique see Baroque guitar and for the romantique guitar technique, see Romantic guitar. The classical guitar technique is a fingerstyle technique used by …

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  • 83Bore (wind instruments) — The bore of a wind instrument is its interior chamber that defines a flow path through which air travels and is set into vibration to produce sounds. The shape of the bore has a strong influence on the instruments timbre. Contents 1 Bore shapes 1 …

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  • 84instrumentation — /in streuh men tay sheuhn/, n. 1. the arranging of music for instruments, esp. for an orchestra. 2. the list of instruments for which a composition is scored. 3. the use of, or work done by, instruments. 4. instrumental agency; instrumentality. 5 …

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  • 85Horn (instrument) — Corno redirects here. For the river, see Corno (river). French horn redirects here. For the luxury hotel and restaurant, see French Horn, Sonning Eye. Horn Horn Brass instrument Other names …

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  • 86Switched-mode power supply — switched mode power supply. A bridge rectifier B Input filter capacitors C Transformer D output filter coil E output filter capacitors ] A switched mode power supply, switching mode power supply or SMPS, is an electronic power supply unit (PSU)… …

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  • 87Inverter (electrical) — An inverter is an electrical device that converts direct current (DC) to alternating current (AC)[1]; the converted AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits. Solid… …

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  • 88Node (physics) — A standing wave. The red dots are the wave nodes A node is a point along a standing wave where the wave has minimal amplitude. For instance, in a vibrating guitar string, the ends of the string are nodes. By changing the position of the end node… …

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  • 89Didgeridoo — For the Aphex Twin single, see Digeridoo (EP). Didgeridoo Top: Traditionally crafted decorated Middle: Bamboo souvenir didgeridoo Bottom: Traditionally crafted undecorated Brass instrument …

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  • 90Fourier series — Fourier transforms Continuous Fourier transform Fourier series Discrete Fourier transform Discrete time Fourier transform Related transforms …

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