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SPEED OF LIGHT
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
THE GOLDEN RATIO
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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1.618033988...
Pi
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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3.14159265...
PYTHAGORAS' CONSTANT
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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1.41421356...
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