inner horizontal surface

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• inner horizontal surface — An imaginary surface located in the horizontal plane above an airport at a designated height above an established datum. See initial approach surface …   Aviation dictionary

• Inner ear — The cochlea and vestibule, viewed from above …   Wikipedia

• surface — surfaceless, adj. surfacer, n. /serr fis/, n., adj., v., surfaced, surfacing. n. 1. the outer face, outside, or exterior boundary of a thing; outermost or uppermost layer or area. 2. any face of a body or thing: the six surfaces of a cube. 3.… …   Universalium

• Vertical boiler with horizontal fire-tubes — Blake boiler A vertical boiler with horizontal fire tubes is a type of small vertical boiler, used to generate steam for small machinery. It is characterised by having many narrow fire tubes, running horizontally. Boilers like this have been… …   Wikipedia

• obstacle-limitation surfaces — The outer horizontal, conical, inner horizontal, approach, inner approach, transitional, inner transitional, balked landing, and takeoff climb surfaces make up the obstacle limitation surfaces. The outer horizontal surface is a plane located 500… …   Aviation dictionary

• building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …   Universalium

• Difference between train and tram rails — A railroad or railway is a track where the vehicle travels over two parallel steel bars, called rails. The rails support and guide the wheels of the vehicles, which are traditionally either trains and trams. Modern light rail is a relatively new… …   Wikipedia

• Bicycle and motorcycle dynamics — A computer generated, simplified model of bike and rider demonstrating an uncontrolled right turn. An …   Wikipedia

• obstacle-free zone — The obstacle free zone is a three dimensional volume of airspace set up to protect aircraft transitioning to and from the runway. The OFZ clearing standard precludes taxiing and parked airplanes and object penetrations, except for frangible… …   Aviation dictionary

• Polarization — ( Brit. polarisation) is a property of waves that describes the orientation of their oscillations. For transverse waves, it describes the orientation of the oscillations in the plane perpendicular to the wave s direction of travel. Longitudinal… …   Wikipedia

• Science and mathematics from the Renaissance to Descartes — George Molland Early in the nineteenth century John Playfair wrote for the Encyclopaedia Britannica a long article entitled ‘Dissertation; exhibiting a General View of the Progress of Mathematics and Physical Science, since the Revival of Letters …   History of philosophy