diaphragm excursion

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• Diaphragmatic excursion — is the movement of the thoracic diaphragm during breathing. Normal diaphragmatic excursion should be 3–5 cm, but can be increased in well conditioned persons to 7–8 cm. This measures the contraction of the diaphragm. It is performed by… …   Wikipedia

• Loudspeaker — For other uses, see Loudspeaker (disambiguation). An inexpensive, low fidelity 3½ inch speaker, typically found in small radios …   Wikipedia

• Stethoscope — Modern stethoscope. The stethoscope (from Greek στηθοσκόπιο, from στήθος, stéthos chest and σκοπή, skopé examination) is an acoustic medical device for auscultation, or listening to the internal sounds of an animal body. It is often used to… …   Wikipedia

• Thiele/Small — commonly refers to a set of electromechanical parameters that define the specified low frequency performance of a loudspeaker driver. These parameters are published in specification sheets by driver manufacturers so that designers have a guide in …   Wikipedia

• Electrostatic loudspeaker — An electrostatic loudspeaker is a loudspeaker design in which sound is generated by the force exerted on a membrane suspended in an electrostatic field.Design and functionalityThe speakers use a thin flat diaphragm usually consisting of a plastic …   Wikipedia

• WOOx Technology — (rendered wOOx) is a brand created by Royal Philips Electronics to identify loudspeaker systems that employ passive radiator technology and active equalization to maximize the output of the passive diaphragm. wOOx technology is primarily… …   Wikipedia

• Headphones — For other uses, see Headphones (disambiguation). Sennheiser HD555 headphones, used in audio production environments …   Wikipedia

• Woofer — This article is about a loudspeaker driver. For individuals trained in remote first aid, see Wilderness First Responder. Woofer is the term commonly used for a loudspeaker driver designed to produce low frequency sounds, typically from around 40… …   Wikipedia

• eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

• Acoustic suspension — The acoustic suspension woofer is a type of loudspeaker that reduces bass distortion caused by non linear, stiff mechanical suspensions in conventional loudspeakers. It was invented in 1954 by Edgar Villchur, and brought to commercial production… …   Wikipedia

• Alexander Graham Bell — Infobox Person name = Alexander Graham Bell image size = 225px caption = Portrait of Alexander Graham Bell c. 1910 birth date = 3 March 1847 birth place = Edinburgh, Scotland, UK death date = death date and age|1922|8|2|1847|3|3|df=y death place …   Wikipedia