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Parkesine, the first member of the Celluloid class of compounds and considered the first man-made plastic, is patented by Alexander Parkes. [4] 1869: John Wesley Hyatt discovers a method to simplify the production of celluloid, making industrial production possible. 1872: PVC was accidentally synthesized in 1872 by German chemist Eugen Baumann ...
An example of gold plated jewelry. Originally, costume or fashion jewelry was made of inexpensive simulated gemstones, such as rhinestones or lucite, set in pewter, silver, nickel, or brass. During the depression years, rhinestones were even down-graded by some manufacturers to meet the cost of production. [1]
An early Meccano set on display in the Edinburgh Museum of Childhood. In 1901 Frank Hornby, a clerk from Liverpool, England, invented and patented a new toy called "Mechanics Made Easy" that was based on the principles of mechanical engineering. [2]
The earliest gold artifacts were discovered at the site of Wadi Qana in the Levant. [13] Silver is estimated to have been discovered in Asia Minor shortly after copper and gold. [14] There is evidence that iron was known from before 5000 BC. [15] The oldest known iron objects used by humans are some beads of meteoric iron, made in Egypt in ...
Unassembled parts of a Hasegawa 1/72 F/A-18E kit. The frame surrounding the various parts is called the injection moulding "runner" or "sprue" The first plastic models were injection molded in cellulose acetate (e.g. Frog Penguin and Varney Trains), but currently most plastic models are injection-molded in polystyrene, and the parts are bonded together, usually with a plastic solvent-based ...
Brass Bells The jingle-jangle of bells is a hallmark of Christmas, whether on a horse-drawn sleigh, ringing by carolers, or the call to start a church service—they tantalize our ears and our eyes.
This eye-catching asymmetrical ring features a combination of rubies and natural diamonds, all set in 14k gold, and it can even be engraved with a custom message for a small fee. $990 at Shane Co ...
The so-called "girl's" Jotter was a smaller version of the original. It was manufactured in the early 1960s and was popular for a time. It came in several colors including black. The Jotter has been manufactured in Canada, England, France, Australia, Brazil, West Germany, Peru, Colombia, Mexico, India, China and Argentina. [citation needed]