sound-energy density
81Sperm whale — Sperm Whale[1] Size compared to an average human …
82Spud gun — For the child s toy which fires small pieces of potato, see spud gun (toy). A pneumatic potato cannon A potato cannon (also known as a spud gun or spudzooka ) is a pipe based cannon which uses air pressure (pneumatic), Propellant, or… …
83ГОСТ Р 53571-2009: Акустика. Шум, производимый на стрельбищах. Часть 2. Определение акустических характеристик дульной волны и звука пули путем расчета — Терминология ГОСТ Р 53571 2009: Акустика. Шум, производимый на стрельбищах. Часть 2. Определение акустических характеристик дульной волны и звука пули путем расчета оригинал документа: 3.4.3 акустическая эффективность sас (acoustical efficiency) …
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84Intensity (physics) — In physics, intensity is a measure of the time averaged energy flux. The word intensity here is not synonymous with , , or , as it sometimes is in colloquial speech. For example, the intensity of pressure is meaningless, since the parameters of… …
85Soundproofing — is any means of reducing the intensity of sound with respect to a specified source and receptor. There are several basic approaches to reducing sound: increasing the distance between source and receiver, using noise barriers to block or absorb… …
86Spud gun (cannon) — This article is about pipe based cannons and similar which use air pressure, or combustion of a gaseous fuel, or both, to launch large projectiles at low speed. They are in two types: * To fire whole potatoes. These launchers are built and fired… …
87Edwards Air Force Base — Part of Air Force Materiel Command (AFMC) Located near: Edwards, California …
88MythBusters (2006 season) — Country of origin Australia United States No. of episodes 28 (includes 2 specials) Broadcast Original channel Discovery Channel …
89Cooling tower — Natural draft wet cooling hyperboloid towers at Didcot Power Station, UK …
90Microphone — For the indie film, see Microphone (film). Microphones redirects here. For the indie band, see The Microphones. A …
