Gutta Percha is a flexible rubber-like material. It was used as an outside coating for the first transatlantic telegraph cable.
Percha's population is 1,449.
It was a telegraph cable laid in August 1850 by the Anglo-French Telegraph Company, owned by John Watkins Brett. Running from Dover to Calais, it was made of copper coated in gutta-percha.
The area of Percha is 30.3 square kilometers.
Percha Dam State Park was created in 1970.
During the second European industrial revolution, the American inventor Thomas Edison developed a method to insulate telegraph wires using gutta-percha, a natural latex material. This innovation significantly improved the durability and efficiency of telegraph lines, allowing for better long-distance communication. Edison's work, along with others in the field, contributed to the rapid expansion of telegraph networks during this period.
ZINC oxide %.
Yes, gutta-percha can be black. This is achieved by adding carbon black pigment during the processing of the material, resulting in a dark coloration. Black gutta-percha is commonly used in dentistry for endodontic procedures.
Hanger/rack
ZINC oxide %.
It is a natural resin extract from Malaysia trees
Gutta-percha
GUTTA PERCHA - semi-plastic, isomer of natural rubber (cis isomer). Harder, cannot be stretched reversibly. Polymeric cones of gutta percha with other constituents such as ZnO, barium sulphate, plasticisers and pigments are used. DISADVANTAGES OF GUTTA PERCHA; - micro voids - voids on insufficient packing - difficult to condense - may stick to instrument on condensing - turns brittle quickly after setting - unsuitable for use by itself - not flexible enough to take the shape of the root and completely seal by itself - needs a paste (sealer) - lacks resilience