Timeline : Theories
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Pangaea, Supercontinent
Pangaea or Pangea is the name given to the supercontinent that existed during the Paleozoic and Mesozoic eras about 250 million years ago, before the process of plate tectonics separated each of the c... |
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Lao Tzu, Founder of Taoism
Lao Tzu, Chinese philosopher, reputedly the founder of Taoism. It is uncertain that Lao Tzu (old person or old philosopher) is historical. His biography in Ssu-ma Ch'ien's Records of the Historian (1s... |
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Democritus, Atomic Theory
Democritus of Abdera is best known for his atomic theory but he was also an excellent geometer. Very little is known of his life but we know that Leucippus was his teacher. Although little is known of... |
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Aristarchus, Sun at center of Universe
Aristarchus of Samosis the first person we know of who suggested that the earth might go around the sun and not the other way around. He figured this out by looking at the shadow of the earth on the m... |
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Eratosthenes, Measuring the Earth
Eratosthenes of Cyrene was a Greek scholar who lived and worked in Cyrene and Alexandria. Eratosthenes was director of the famous library in Alexandria, and is known for numerous important contributio... |
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The Council of Nicea, The Trinity
The Council of Nicea convened on May 20, 325 A.D. The 230 church leaders were there to consider a question vital to the church: Was Jesus Christ equal to God the Father or was he something else? Athan... |
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On the Revolutions of Heavenly Spheres
Nicolaus Copernicus: The Ptolemaic system of the universe, with the earth at the center, had held sway since antiquity as authoritative in philosophy, science, and church teaching. Following his preci... |
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Isaac Newton, Theory of Gravitation
Newton laid the foundation for differential and integral calculus. His work on optics and gravitation make him one of the greatest scientists the world has known. Newton's greatest achievement was his... |
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John Harrison, Solved Longitude - 1773
John Harrison was an English clockmaker, who designed and built the world's first successful chronometer (maritime clock), one whose accuracy was great enough to allow the determination of longitude o... |
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James Lind, Cure for Scurvy
James Lind was the pioneer of naval hygiene in the Royal Navy. By conducting what was perhaps the first ever clinical trial, he proved that citrus fruits cure scurvy. He also proposed that by distilli... |
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Man a Machine, La Mettrie
Julien Offray de La Mettrie 1709-1751) is the first modern materialist. His Man a Machine is a passionate, popular presentation of materialism and atheism, more provocative than any earlier work. One... |
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Delambre, The Metric System
In 1795 Jean Baptiste Joseph Delambre was admitted to the Bureau des Longitudes, becoming President in 1800. In 1801 he was appointed secretary to the Académie des Sciences making him the most powerfu... |
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Gregor Mendel, Father of Genetics
Gregor Johann Mendel was a Austrian priest and scientist, and is often called the father of genetics for his study of the inheritance of traits in pea plants. Mendel showed that the inheritance of tra... |
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Louis Pasteur, Germ Theory of Disease
Louis Pasteur was born on December 27, 1822 in Dole, in the region of Jura, France. His discovery that most infectious diseases are caused by germs, known as the "germ theory of disease", is one of th... |
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Eduard Suess, Discovery Supercontinent
Eduard Suess was a geologist who was an expert on the geography of the Alps. He is responsible for discovering two of the Earth's major now-lost geographical features, the supercontinent Gondwana (pro... |
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