The Number 1675: Properties and MeaningsPrime Factors of 1675=5x5x67.
The Year 1675 ADIn the year 1675 AD while in Paris, Danish astronomer Ole Romer measured the speed of light.
In the year 1675 AD Cassini discoverd that Saturn's rings are split into two parts, so that today the gap is called the "Cassini Division".
In the year 1675 AD Christian Huygens patented the pocket watch.
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