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Who invented Post-it Notes?

Silver's discovery of a sticky substance known as "microspheres" had a high "tack," low "peel" characteristic but no immediate practical application for it. Fry, meanwhile, needed a bookmark for his choir hymnals that would stick to the pages and not constantly fall out. In a flash of inspiration, he remembered Silver's adhesive and realized that a sticky note would perfectly solve his problem. Fry and Silver then entered into a joint venture to further develop their product, later known as Post-it Notes.

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Who invented the golden ratio?

A rectangle adhering to the golden ratio would have a height of x and a width of 1 that could be divided at a height of x - 1 such that the new rectangle would have the same ratio of height to width.\nThe value for x that creates the golden ratio is an irrational constant equal to approximately 1.62. This ratio is quite important in mathematics, as it is approximated in the Fibonacci sequence and is often seen in natural formations, such as the shell of a nautilus.

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What are the eight basic features of civilization?

The first civilization is widely accepted to have appeared between the Tigris and Euphrates rivers in modern Iraq around 3200 B.C. The region was called Mesopotamia. Before the rise of Mesopotamia, humans were generally hunter gatherers. However, with the onset of the Stone Age and the discovery of tools, Neolithic humans began to organize themselves into communities. These communities were supported through animal domestication and farming practices. These small farming villages that settled in fertile regions were the seeds for the civilizations to take root. For example, the ancient city of..

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What was the reason for the invention of the Internet?

The research originally commissioned by the U.S. government during the 1960s was intended to enable top secret military information to be safely and quickly shared across intelligence and research locations across the U.S. The first systems that were developed, however, did not begin to resemble the modern Internet until the 1980s when funding from the National Science Foundation, along with support from private and commercial interests, led to the creation of new systems that were capable of merging with other existing networks. By the 1990s, the transformation often referred to as the "comme..

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What did the Puritans wear?

Puritan clothing was modest, plain and practical. Fancy frills, lace, ribbons and even buttons were proscribed. Men and women both dressed modestly, covering everything but hands and face at all times. Women and girls were expected to always cover their hair with a cap or coif. Very young children and babies wore loose shifts, a dress-like garment, while children over the age of 4 or 5 dressed like miniature adults. While hats and shoes were often shown with large buckles on them, these garments were usually plain and black. Shoes were low-heeled and practical.\nWhile Puritans have the reputat..

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What did Austria-Hungary do in WWI?

According to Firstworldwar.com, Austria-Hungary pulled in the armies from its European empire. Poles, Czechs, Slovaks, Italians, Bosnians and Croatians all fought on the Axis side of the war. Germany eagerly entered the war as an ally, but its much greater expertise in waging war soon made it the dominant partner in the new alliance. By 1916, Austria-Hungary was following Germany's lead, and low morale coupled with an ethnically diverse and increasingly Balkanized army began to weaken the once-formidable empire.\nAs the war dragged on, Austria-Hungary's empire began to dissolve. By t..

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Does a complete list of Christopher Columbus's crew members exist?

There are actually two lists of Columbus' crew, compiled by two different people. One list of names was collected by John Boyd Thacher, and the other more recent list was created by Alice Bache Gould. There were a total of 87 crewmen on the three ships. Four of them took advantage of an offer from the Spanish sovereigns. The deal offered them amnesty of their crimes if they agreed to become one of the crew members. This deal was offered to many convicts, but only four accepted the deal.\nThe first crews were made up of various professions. There were pilots, or captains, apprentices, serv..

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In what year was America founded?

Thomas Jefferson, future President of the United States, wrote the Declaration of Independence during the summer of 1776. In it he outlined the justifications for the colonies declaring independence. Among these were issues of taxation, maintaining standing armies in the colonies, and lack of representation. He wrote that all men are created equal, that they are given "certain unalienable rights, that among these are life, liberty, and the pursuit of happiness."

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What were the major accomplishments of Mayan civilization?

The Mayan civilization survived for more than 2,000 years from 300 A.D. to 900 A.D. in the time period known as the Classic Period. The Mayan people were made up of people who lived in the present-day areas of Mexico, Guatemala, Belize, Honduras and El Salvador.The Mayan written language was made up of 800 glyphs or symbols. Each of the glyphs represented a syllable or a word and could be combined with other glyphs in countless ways. The Mayan believed that the universe was present in everyday life and the Mayans had a strong knowledge of the different celestial bodies. They knew how to predi..

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In what year was the television invented?

The early television was developed by RCA. The company televised a speech by Franklin Delano Roosevelt in 1939, making Roosevelt the first President of the United States to appear on television.\n\nTelevision remained quite experimental during the following years, and in 1946, there were only 6,000 television sets in use, according to the Grolier Encyclopedia. Television grew by leaps and bounds after World War II, and commercial television as it is known today began in the late 1940s.

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