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Placunidae, also known as windowpane oysters, windowpane shells, and Capiz shells, are a taxonomic family of saltwater clams, marine bivalve mollusks which are related to oysters and scallops. This family is best known for the shells of the species Placuna placenta , which are translucent, and are commonly used in shellcraft production.
A closed capiz-shell window. In Philippine architecture, the capiz shell window is a type of window with small panes that use the translucent and durable capiz shell (windowpane oyster shell) instead of glass. The Chinese were presumably the first to utilize the shell, the dissemination of which use has been credited to the Portuguese ...
Uranium glass used as lead-in seals in a vacuum capacitor. Glass-to-metal seals are a type of mechanical seal which joins glass and metal surfaces. They are very important elements in the construction of vacuum tubes, electric discharge tubes, incandescent light bulbs, glass-encapsulated semiconductor diodes, reed switches, glass windows in metal cases, and metal or ceramic packages of ...
A hermetic seal is any type of sealing that makes a given object airtight (preventing the passage of air, oxygen, or other gases).The term originally applied to airtight glass containers but, as technology advanced, it applied to a larger category of materials, including metals, rubber, and plastics.
Shellharbour Square opened in November 1982 and featured Kmart, Coles New World, Franklins, Best & Less, W. Waters and Son hardwares. and 96 speciality stores. [2] The centre was owned by Girvan Corporation Ltd who purchased and developed the centre on former public housing land.
The largest yield of a relatively compact linear implosion device was under 2 kilotons for the cancelled (or never deployed but apparently tested) US W82-1 artillery shell design, with yield under 2 kilotons for a 95-pound (43 kg) artillery shell 6.1 inches (15 cm) in diameter and 34 inches (86 cm) long. [citation needed]
Russian 122 mm shrapnel shell, which has been fired, showing rifling marks on the copper driving band around its base and the steel bourrelet nearer the front. A driving band or rotating band is a band of soft metal near the base of an artillery shell, often made of gilding metal, [1] copper, or lead.
Capiz is known for the Placuna placenta oyster shell that has the same name locally and is used for decoration and making lampshades, trays, doors and capiz-shell windows. Likewise, the province is known as the "Seafood Capital of the Philippines" [ 4 ] and was among the top 15 most frequently visited places in the Philippines. [ 5 ]