Mauveine is a mixture of four related aromatic compounds differing in number and placement of methyl groups. Its organic synthesis involves dissolving aniline, p-toluidine, and o-toluidine in sulfuric acid and water in a roughly 1:1:2 ratio, then adding potassium dichromate. How was aniline discovered? The most important discovery in theRead More →
The first lyres in Ancient Greece were made of tortoise shells. They had two fixed upright arms and a cross bar. There were tuning pegs often made of bone, ivory, wood or even bronze. Strings were usually made of sheep gut. Did Apollo invent the lyre? Apollo’s Lyre is aRead More →
While the moonwalk is not actually a patented dance move, musician Michael Jackson does indeed hold a patent. … Awarded jointly to him and to two of his costume-men in 1993, the patent described specially designed shoes that gave the illusion of his leaning beyond his center of gravity. HowRead More →
Push pins are used on bulletin boards and to hang lighter items on walls. The push pin was invented by Edwin Moore in 1900. Moore worked on the development of his idea of “a pin with a handle” until he created the push pin we still use in most homesRead More →
When George Boole invented Boolean algebra, his basic goal was to find a set of mathematical axioms that could reproduce the classical results of logic. … Boole was rather informal in the way he described his axiom system. Who invented Boolean algebra invented Boolean algebra in the mid 1800s? GeorgeRead More →
A typical power hammer consists of a frame, an anvil, and a reciprocating ram holding a hammer head or die. The workpiece is placed on the lower anvil or die and the head or upper die strikes the workpiece. … Power hammers are rated by weight of moving parts thatRead More →
(pejorative, slang) A woman (less commonly a man) who removes her clothing for entertainment. Is a vegetable peeler the same as a potato peeler? A vegetable peeler is very similar to a potato peeler, but can vary in size and blade style to make it more suitable to specific foods.Read More →
Escritoire. Morphy Auctions. An escritoire is a type of case furniture, usually a low desk with a slant top. When open, this sloping lid forms a surface for writing or reading (the name derives from the French word “écrire”, meaning “to write”). Where did desks come from? The first desksRead More →
When Leonie Mateer wanted to create a cosmetics box called Caboodles, she searched for a book that could give her a simple, step-by-step guide on how to take a product idea to market. “I wanted a book written by someone who had actually done it,” said Mateer, 62, of Ventura.Read More →
Abstract. According to tokenism theory, “tokens” (those who comprise less than 15% of a group’s total) are expected to experience a variety of hardships in the workplace, such as feelings of heightened visibility, isolation, and limited opportunities for advancement. What does tokenism refer to? Tokenism: “the practice of doing somethingRead More →