Sacharias Jansen Totally Explained

Everything about Zacharias Jansen totally explained

Zacharias Jansen (c. 1585 - c. 1632) was a Dutch spectacle-maker from Middelburg, son of Hans Martens. His name is often written as Zacharias Jansen or Zacharias Janssen, but as Dutch scientific literature writes the name as Zacharias Jansen, that way of writing it's also used in this article. In the year 2008 Jansen is commemorated as one of the two possible inventors of the telescope, the other being Hans Lippershey. In that year the Dutch commemorate the invention of the telescope, 400 years earlier. According to some, it wasn't Lippershey, but rather Jansen who invented the telescope. The fact that Jansen isn't well-known outside the Netherlands has to do with the patent Lippershey requested for the telescope in 1608. Whilst that news was spread across the world in just a few months (eventually Galileo Galilei heard about it), several investigations on the subject in the 17th, 18th, 19th and 20th century, stating Jansen might have invented the device, were only published and read in the Netherlands. To make it even worse, just one of the investigations was published in English and just that one stated Lippershey did invent the telescope, making Jansen even more infamous in countries outside the Netherlands. Several sources, however, indicate Zacharias Jansen constructed the first telescope in 1604, or even earlier. while trying to find a way to make magnification even greater, to help people with seriously poor eyesight. Janssen is attributed to this discovery, though it's debatable.

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