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Ancient Greek philosophers

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Maps, a scale model of the real world, are an important tool in geography. Maps can be considered as a reference tool and a communication tool. Maps were first drawn to assist with navigation. Aristotle determined that the Earth was a sphere. He noticed that the Earth?s shadow is a circle during an eclipse. Eratosthenes was the first person to use the word geography. He created the first correctly prepared world map. Ptolemy, writer of an eight volume ?Guide to Geography?, improved map-making that could not be changed for more than a thousand years. Little progress occurred after Ptolemy until the seventh century, when Bernhardus Varenius created a map which stood as the standard for almost a century.

Evolution of the Atomic Theory

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Evolution of the Atomic Theory Democritus and Leucippus 442 BC Stated that: Between atoms lies empty space Atoms are indestructible Atoms have always been and always will be in motion Atoms differ in shape and size ?The more any indivisible exceeds, the heavier it is.? Aristotle 355 BC Came up with the idea that everything was made up of earth, air, fire, and/or water. Antoine Lavoisier 1785 Discovered the Law of Conservation of Mass J. L. Proust 1794 Discovered the law of definite proportions Thomas Young 1801 - 1817 Proved Isaac Newton?s theory, that light is a wave of particles, incorrect and discovered how there was a variation in rays of light due to the size of wavelengths John Dalton 1803 Came up with his own atomic theory that said:
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