History

A:

Ignazio Porro invented the first binoculars around 1854. Since then, they have been an essential tool for outdoor use, creating a more exciting experience for the viewer.

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    • What food did Sumerians eat?

      Q: What food did Sumerians eat?

      A: Barley was the main staple of the Sumerian diet, and was used to make barley cakes and barley paste. Sumerians combined barley with other local vegetables, including beans, lentils, chickpeas, mustard and lettuce. Lamb, goat, pork and fish were favorites with city-dwelling Sumerians, but rural farming communities did not eat meat often and lived on a mostly vegetarian diet.
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    • Where did the Earth come from?

      Q: Where did the Earth come from?

      A: Astrophysicists believe the Earth and the rest of the solar system is the result of the Big Bang and its explosions of massive stars. The Big Bang and the stellar explosions, called supernovas, blasted untold amounts of material into space. Eventually, the matter cooled down and began to clump together into a hot, spinning cloud that eventually became a solar nebula.
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    • What did the Incas live in?

      Q: What did the Incas live in?

      A: Inca houses were made from stone blocks and they had angled, thatched roofs. The Incas used mainly granite stones, because it was a hard, sturdy building material.
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    • What did samurai wear?

      Q: What did samurai wear?

      A: Samurai warriors wore kimonos, obis, loincloths, kamishimos, hakamas and occasionally long-sleeved coats and hats. Their clothing varied in quality and style depending on their socioeconomic status and level of mastery. All warriors wore loincloths, which served as underwear, along with belts and swords or other protective weapons, at all times.
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    • What was the role of women in ancient China?

      Q: What was the role of women in ancient China?

      A: Women in ancient China lived oppressed lives, and their roles centered around caring for their husbands, cleaning, cooking and looking after their kids. The women of ancient China were expected to bear many children, and most of them felt pressure from their husbands to bear a son despite its being beyond their control.
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    • What did the Mayans eat?

      Q: What did the Mayans eat?

      A: The four staple foods in Mayan cuisine were squash, beans, maize and chili peppers, and they were often combined with meat or seafood. Squash, beans, and maize are often referred to as the "three sisters" because they provide all the necessary nutrients when eaten together.
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    • Who discovered mitochondria?

      Q: Who discovered mitochondria?

      A: Robert Altmann discovered mitochondria in 1886, thinking that he was seeing parasites. Altmann called his discovery "bioblasts" and posited that they were found in almost all cells. His ideas laid the groundwork for further discoveries by scientists.
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    • What did Stephen Hawking invent or discover?

      Q: What did Stephen Hawking invent or discover?

      A: Stephen Hawking is most famous for his theory about black holes. The theory hypothesizes that black holes release matter in the form of radiation. He is also renowned for his book "A Brief History of Time."
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    • How did the light bulb change the world?

      Q: How did the light bulb change the world?

      A: The invention of the light bulb changed the world in many ways, including facilitating the creation of large power grids, changing the social and economic structure of society and bringing other appliances into the home. Although many inventors had experimented with incandescent light bulbs, Thomas Edison created the first widely distributed model in 1879.
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    • Who invented the fluorescent lamp?

      Q: Who invented the fluorescent lamp?

      A: According to the U.S. Department of Energy, engineer and inventor Peter Cooper Hewitt created the first usable fluorescent lamp in the early 1900s. While earlier inventors and researchers experimented with fluorescence, Hewitt's design led to the first commercially successful form of fluorescent lighting.
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    • Who invented the Band-Aid?

      Q: Who invented the Band-Aid?

      A: The band-aid was invented by Earle Dickson, who was an employee of Johnson & Johnson, and his wife Josephine. His wife was constantly cutting or burning herself and needed to find relief.
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    • How have microscopes changed over time?

      Q: How have microscopes changed over time?

      A: Since the 1st century when Romans experimented with magnifying small objects by looking at them through glass, the microscope has changed considerably with modern versions of the device capable of presenting three-dimensional images of objects at the sub-atomic level. The most notable advances in microscope technology occurred in the 19th century.
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    • What did medieval knights do?

      Q: What did medieval knights do?

      A: Knights performed military services for lords within a kingdom. Clergymen during the Crusades established a moral code in which a knight must also protect churches, women, orphans and the weak.
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    • How tall was Genghis Khan?

      Q: How tall was Genghis Khan?

      A: There is no definitive account of Ghengis Khan's height. Descriptions simply describe him as tall. Tall is likely relevant, however. The average height of man during the time in which Ghengis Khan lived was just under 5 foot 7 inches, so anyone taller than this average could be considered tall.
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    • Who won the crusades?

      Q: Who won the crusades?

      A: The crusades were ultimately won in the East by the Muslims when the Bahri Mamluks conquered Acre in 1291. While crusades were mounted even after this point, political witch-hunts mounted against the Knights Templar by King Philip IV of France made further major crusades in the Levant impractical.
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    • Why did Henry VIII create the Church of England?

      Q: Why did Henry VIII create the Church of England?

      A: King Henry VIII created the Church of England in 1536 as a result of a dispute with the pope, who would not permit Henry to get a divorce from his wife and marry his long-time mistress. Henry's marital history started under a cloud of suspicion, as his marriage to Catherine of Aragon meant he was forming a union with his brother's widow. Whether his series of divorces was actually the result of his failure to produce a male heir or some other form of instability is a matter of some dispute, but the reason for forming the Anglican Church was to give Henry the right to act as the head of his own church and marry as he pleased.
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    • What did the Vikings invent?

      Q: What did the Vikings invent?

      A: The Vikings invented the longboat during the Vikings Age from 800 to 1100 A.D. This type of ship helped them travel the oceans to reach France, England, Scotland, Greenland, Iceland, Ireland, Vinland and the Middle East. Thus, they became a dominant force in European medieval trade, politics and warfare.
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    • What was the longest ruling Chinese dynasty?

      Q: What was the longest ruling Chinese dynasty?

      A: The Zhou Dynasty, also spelled "Chou," was the longest dynasty in the history of China. Though exact dates are unknown, scholars and archaeologists place the Zhou Dynasty reign from about 1046 B.C. to 256 B.C.
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