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Forearc and back-arc processes in subduction zones. (a) Cross section of a nonaccretionary (typically Mariana-type) subduction zone, with ocean crust being subducted beneath ocean crust and with extension in the back-arc region. (b) Cross section of…

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from article Aircraft design

Visualization of a simulated pressure field on the exterior of a conceptual "double bubble" aircraft, a modified "tube-and-wing" structure that places the engine on the top rear of the fuselage. Slower air flow along the fuselage and into the engine…

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from article Aircraft design

Aircraft controls.

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from article Aircraft design

Aircraft banking. Heavy arrows represent wing lift.

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from article Aircraft design

Airplane experiencing an increase in angle of attack, during which the lift on the main wing and the tail plane, represented by heavy arrows, also increases.

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from article Aircraft design

Induced drag.

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from article Aircraft design

Jet engine components.

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from article Microwave filter

Common microwave filter attenuation (insertion loss) versus frequency responses. (a) Low-pass filter. (b) High-pass filter. (c) Band-pass filter. (d) Band-stop filter. Attenuation or insertion loss increases down the vertical axis.

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from article Microwave filter

Third-order (four-section) microwave band-pass filter. (a) Layout of parallel coupled stripline filter. (b) Calculated frequency response of filter, with center frequency of 2 GHz and 0.5-dB equal-ripple passband.

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from article Electrical conduction in gases