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About Compass’s Invention cheap mba definition essay help Information Technology

The compass has served as a navigational aid to many tourists, travelers, and numerous explorers. Though the compass has served well in navigation, it has affected and improved mankind greatly. In China, building was refined in many ways by the compass. It has enabled many to find positions, direction or route. No one e nc knows when, where, or by whom the compass was invented (dEstaing and Young 153). We do know though, that there were numerous inventors of the compass. Th first compass was invented about two thousand years ago by the Chinese.

It was discovered by Luan Te, a Chinese magician. He had a board game similar to chess which one of the game pieces was a spoon. When he emptied the metal laying pi onto the board the spoon would spin around until the handle was pointing north (Icanberry 1). His spoon was made from what we know today as lodestone. The sp was able to spin around because of the long handle and rounded bottom. Elmer Sperry, an American navigator, invented the gyrocompass, a widely used tool. This device worked anywhere on Earth, day or night.

When it points northward, it hold that positioning because it uses a spinning wheel set in gimbals called a gyroscop William Gilbert, an Englishman, experimented with magnets to learn and unders their behaviors. Gowin Knight, on the other hand, rubbed magnets on iron bars t create super magnets. This magnetized compass needles for much longer period time. Lord Kelvin corrected this by using small magnets that surrounded the compass and prevented deviation. The small magnets were known as corrector magnets (Travers 155).

Many different compasses have been invented, with vario uses, but some stand out more than others. The well-known compasses today are magnetic compass, the gyrocompass, the liquid compass, and the steering compa The magnetic compass uses a magnetic needle; this is glued to the bottom. When was attached to the pivot, the entire card rotated to the north rather than Just the needle, which made the compass much easier to read than previous styles. Bibliography:. Free essay sample, essay topic, how to write essay on Compas

Insert surname4 Professor’s name Student’s name Course title Date Human Evolution Human

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Professor’s name

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Human Evolution

Human evolution is the systematic development of the human species both physically and mentally over time. Different dating methods have helped scientists in their efforts to establish the evolution journey of human beings.

There are several theories all based on existing evidence as well as fossil studies that try to explain the process of human evolution and seems to take a detailed account of the long journey. For instance, gorillas, baboons and chimpanzees have a lot of similarities with initial hominids. For instance, the modern chimpanzee looks so much like an ancestor to the early Homo. That’s why Australopithecus have been viewed as the bridging gab between this early homo and the ape like ancestor (Boyd, Robert & Silk, 2014).

However on the other hand, the ardipithecus ramidus suggests that the African ape has been evolving along the lineages and therefore differs with the Australopithecus theory. Ardipithecus ramidus has preserved some of its ancestral characteristics such as an upright walking posture and less prolonged canines as opposed to the present day African apes. It shares a lot of characteristics with more recent hominids. The Australopithecus relation to modern man shows that the environmental changes forced an adaptation mechanism that saw enlargement of the rear teeth due to the diet and the lessening of canines to create space for the enlarged teeth.

Notable changes in body size and form could be attributed to the activities each that male and female species performed which has been carried on to present days. There have been concerns about the relationship between all these species with evidence being countered by other ideologies (Boyd, Robert & Silk, 2014). It can never be too clear on this issue but the main presumption is that adaptation of early hominids has slowly caused the evolution changes to the current species of man.

Out of Africa Hypothesis

This hypothesis stands on the grounds under which it was formed. The available evidence at the time was the fossils found in different parts of Africa which explained the evolution better than any other. The fact that they were the oldest and exhibited the earliest features made them highly acceptable as the general ancestral home of man. However, time has proven different as recent discoveries have proven otherwise. New fossils have been found in other regions of the world, for instance, Indonesia, and they seem to protest the authenticity of the initial African hypothesis. Further research is required to have a conclusive finding and to come up with a comprehensive finding to the origin of the human race (Árnason & Úlfur, 2016).

A Hobbit on the human family tree

The discovery of this fossil in Indonesia has changed a lot of perceptions about the theories of the evolution of human beings. They suggest that a smaller species of early man live there about 12,000 years ago. This conflicts earlier believes and the entire evolution story. They were shorter, about three feet tall but seemed to be intelligent enough to make stone tools despite their brain size being much smaller. This reason of this astonishment is that scientists never believed that there were such creatures at the time and further never imagined that they could have such abilities (Miller & Jeff, 2015). The most acceptable theory would be that the Homo Floresiensis were genetically altered by their environmental factors and forced to take on a distinct evolution path.

Work cited

Árnason, Úlfur. “The Out of Africa hypothesis and the ancestry of recent humans: Cherchez la femme (et l’homme).” Gene 585.1 (2016): 9-12.

Boyd, Robert, and Joan B. Silk. How humans evolved. WW Norton & Company, 2014.

Miller, Jeff. “Hobbit Man: Another Blunder… And an Insult.” Reason & Revelation 35.4 (2015): 46-47.