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c phi pi sq
Ole RomerThe so-called "speed limit" of the universe, the speed of light was originally quantified in 1676 by Ole Romer. He measured Jupiter's satellite Io's revolutions during different times in Earth's revolutions...

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299,792,458 m/s
Leonardo Da VinciIntricately woven into nature and physics is PHI, the Golden Ratio or Divine Proportion. The petal growth on a rose, the spiral pattern of a sunflower's seeds, the breeding of rabbits are all based on PHI.

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pi symbolThe most famous irrational number in mathematics - the ratio of the circumference of a circle to its diameter - is Pi. Pi's existence has been known since 1650 BC.

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pythagorasAround 500 BC the Pythagorean Society, in the midst of developing their famous theorem, came upon the shocking discovery of irrationality in the form of the square root of two.

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