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Gutta-percha is a tree of the genus Palaquium in the family Sapotaceae, which is primarily used to create a high-quality latex of the same name. The material is rigid, naturally biologically inert , resilient, electrically nonconductive , and thermoplastic , most commonly sourced from Palaquium gutta ; it is a polymer of isoprene which forms a ...
The Gutta Percha Company was an English company formed in 1845 to make a variety of products from the recently introduced natural rubber gutta-percha. Unlike other natural rubbers , this material was thermoplastic allowing it to be easily moulded .
It too has been synthesised and extracted from plant sap, the latter resin being known as gutta-percha. These were widely used as an electrical insulator and as components of golf balls. Annual worldwide production of synthetic polyisoprene was 13 million tons in 2007 [1] and 16 million tons in 2020. [2]
The idea was proved viable when the South Eastern Railway company successfully tested a three-kilometre (two-mile) gutta-percha insulated cable with telegraph messages to a ship off the coast of Folkestone. [45] The cable to France was laid in 1850 but was almost immediately severed by a French fishing vessel. [46]
Crampton specified a much improved cable. The core of the new cable, again made by the Gutta Percha Company, was to have four conductors, substantially increasing the potential traffic, and insulated with gutta-percha as before. However, the four separate insulated conductors were not laid into a single cable by the Gutta Percha Company.
Palaquium gutta (Hook.) Burck; Palaquium hansenii Chantaranothai; Palaquium herveyi King & Gamble; Palaquium heterosepalum Merr. Palaquium hexandrum (Griff.) Baill. Palaquium hinmolpedda P.Royen; Palaquium hispidum H.J.Lam; Palaquium hornei (Hartog ex Baker) Dubard; Palaquium impressionervium Ng; Palaquium karrak Kaneh. Palaquium kinabaluense P ...
Hoka is one of the most popular brands of running and walking shoes out there today, and if you want a white sneaker that marries style and performance, we highly recommend the new Clifton 9.
Araucanos and Huasos in Chile, 19th century. A market scene Ruana in Bogotá, circa 1860. A Peruvian chalán dancing marinera on a Peruvian Paso horse.. A poncho (Spanish pronunciation:; Quechua: punchu; Mapudungun: pontro; "blanket", "woolen fabric") [1] [2] [3] is a kind of plainly formed, loose outer garment originating in the Americas, traditionally and still usually made of fabric, and ...