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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.
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 ]
The Fourcault process uses a ceramic die to shape fused (or molten) glass into a ribbon of rectangular cross section. The die, known as a debiteuse, floats in the molten glass inside of the pit to a prescribed depth which pushes a part of the molten glass slightly above the top surface of the die.
A Galileo thermometer (or Galilean thermometer) is a thermometer made of a sealed glass cylinder containing a clear liquid and several glass vessels of varying density. The individual floats rise or fall in proportion to their respective density and the density of the surrounding liquid as the temperature changes.
1991: Niijima Floats, six-foot spheres of intricate color inspired by Japanese glass fishing floats from the island of Niijima [21] from Chihuly's website 1992: Chandeliers , starting modestly but by the middle of the decade involving a multitude of glass orbs and shapes that in some works look like flowers, others like breasts, and still ...
A glass float on the beach. Many of these floats for fish nets wash up on island beaches around the Pacific. The loss of the floats can leave fish nets drifting in the open ocean where they continue to entangle fish, birds, and marine mammals. Some commercial fishermen use gillnets.