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Nacre (/ ˈ n eɪ k ər / NAY-kər, also / ˈ n æ k r ə / NAK-rə), [1] also known as mother-of-pearl, is an organic–inorganic composite material produced by some molluscs as an inner shell layer. It is also the material of which pearls are composed. It is strong, resilient, and iridescent.
Roman pearl is an alabaster core coated with a pearlescent material. [1] Shell pearl. Cut, buffed, and sometimes dyed nacreous portions of mollusk shells: Variations and alternate names include cat's-eye pearl, coque de perle (from nautilus shells), mother-of-pearl pearl (from mother-of-pearl), and hinge pearl (from the hinge of bivalve shells ...
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Pearloid is used in any context where genuine mother of pearl or abalone might be used, as it is much cheaper and doesn't deplete the supply of the natural material. Gibson uses it as a substitute for the mother of pearl inlays in the fretboards on most of its guitars. [3]
The first plastic made from synthetic components, it was developed by Leo Baekeland in Yonkers, New York, in 1907, and patented on December 7, 1909. [ 3 ] Bakelite was one of the first plastic-like materials to be introduced into the modern world and was popular because it could be moulded and then hardened into any shape.
Organic matrix/ceramic aggregate composites include asphalt concrete, polymer concrete, mastic asphalt, mastic roller hybrid, dental composite, syntactic foam, and mother of pearl. [28] Chobham armour is a special type of composite armour used in military applications. [citation needed]
Bakelite, the first fully synthetic thermoset, is reported by Leo Baekeland using phenol and formaldehyde. 1912: After over 10 years' research, Jacques E. Brandenberger develops a method for producing cellophane and secures a patent. [9] 1926: Waldo Semon and the B.F. Goodrich Company develops a method to plasticize PVC by blending it with ...
Buttons where the fingers contact the keys are usually made from plastic or mother of pearl. Rods, screw pins, and springs are usually made of blued or stainless steel. Mechanical buffers of felt, cork, leather, and various synthetic materials are used to minimize mechanical noise from key movement and to optimize the action of the keywork.
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