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Olaf Roëmer & the Speed of Light-no printing
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Olaf Roëmer & the Speed of Light-no printing

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Almost from ancient times, light has been acknowledged as the transmitter of information to human eyes. Without light hardly anything is known about the "external world". Aristotle ( 384 - 322 BC ) conceived of light as ubiquitous and instantaneous whereas Empedocles of Acragas ( 492 - 432 BC ), Sicilian philosopher-physician-poet and Socrates contemporary, philosophized that the time of transit of light thru an intervening space while bringing information to an observer's eye is finite.

More recently, however, the first acknowledged quantitative determination of the finite speed of light was performed by Danish Olaf Roëmer ( 1644 - 1710 ).

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