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Float glass is a sheet of glass made by floating molten glass on a bed of molten metal of a low melting point, typically tin, [1] although lead was used for the process in the past. [2] This method gives the sheet uniform thickness and a very flat surface. [ 3 ]
A Japanese glass fishing float. Glass floats were used by fishermen in many parts of the world to keep their fishing nets, as well as longlines or droplines, afloat.. Large groups of fishnets strung together, sometimes 50 miles (80 km) long, were set adrift in the ocean and supported near the surface by hollow glass balls or cylinders containing air to give them buoyancy.
A float can collect data while it is neutrally buoyant or moving through the water column. Often, floats are treated as disposable, as the expense of recovering them from remote areas of the ocean is prohibitive; when the batteries fail, a float ceases to function, and drifts at depth until it runs aground or floods and sinks.
Use of float glass at Crystal Palace railway station, London. Float glass is a sheet of glass made by floating molten glass on a bed of molten metal, typically tin, although lead and various low melting point alloys were used in the past. This method gives the sheet uniform thickness and very flat surfaces. Modern windows are made
In 1952 Pilkington invented the float glass process, in which molten glass was "floated" over a bath of molten tin and manipulated to achieve the required product thickness, [5] and with his associate Kenneth Bickerstaff, [6] spent seven years perfecting and patenting its commercially successful manufacture. American inventors had tried several ...
The 300-plus-year-old glass onion bottles were discovered from the 1715 Treasure Fleet shipwreck, located off the coast of Florida. 300-year-old glass onion bottles discovered on Atlantic Ocean ...
The only truly neustonic barnacle, Dosima fascicularis (Buoy barnacle) lives at the ocean's surface by first attaching to floating objects as larvae (such as feathers), and secreting an airy pillow-like float rather than the normal hard cement used by other barnacles.
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