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2. Impact wrench - Wikipedia

   en.wikipedia.org/wiki/Impact_wrench

   Impact wrench. A 1/2" drive pistol-grip air impact wrench. An impact wrench (also known as an impactor, impact gun, air wrench, air gun, rattle gun, torque gun, windy gun) is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rotating mass, then delivering it suddenly to ...

3. Point of sail - Wikipedia

   en.wikipedia.org/wiki/Point_of_sail

   Sailing on a course as close to the wind as possible—approximately 45°—is termed beating, a point of sail when the sails are close-hauled. At 90° off the wind, a craft is on a beam reach. The point of sail between beating and a beam reach is called a close reach. At 135° off the wind, a craft is on a broad reach.

4. Navigation light - Wikipedia

   en.wikipedia.org/wiki/Navigation_light

   Watercraft navigation lights must permit other vessels to determine the type and relative angle of a vessel, and thus decide if there is a danger of collision. In general, sailing vessels are required to carry a green light that shines from dead ahead to 2 points (22 + 1 ⁄ 2 °) abaft [note 1] the beam on the starboard side (the right side from the perspective of someone on board facing ...

5. Rutherford scattering experiments - Wikipedia

   en.wikipedia.org/wiki/Rutherford_scattering...

   Evaluating the formula for an impact parameter, b, equal to the radius of a gold nucleus, 7 × 10 −15 m, gives the deflection angle θ as 2.56 radians (147°). Using instead the radius of a gold atom is 1.44 × 10 −10 m results in a tiny deflection angle θ of 0.0003 radians (0.02°).

6. Genoa (sail) - Wikipedia

   en.wikipedia.org/wiki/Genoa_(sail)

   A jib, left, compared to a roughly 110% genoa, right. The foretriangle is outlined in red. The term jib is the generic term for any of an assortment of headsails.The term genoa (or genny) refers to a type of jib that is larger than 100% of the foretriangle, which is the triangular area formed by the point at which the stay intersects the mast, and deck or bowsprit, and the line where the mast ...

7. Forces on sails - Wikipedia

   en.wikipedia.org/wiki/Forces_on_sails

   At a stable angle of heel (for a sailboat) and a steady speed, aerodynamic and hydrodynamic forces are in balance. Integrated over the sailing craft, the total aerodynamic force (FT) is located at the centre of effort (CE), which is a function of the design and adjustment of the sails on a sailing craft.