Question: who discover the simple microscope first time and when
Answer: Several revolve around the spectacle - making centers in the Netherlands including claims it was invented in 1590 by Zacharias Janssen ( claim made by his son ) and / or Zacharias ' father , Hans Martens , claims it was invented by their neighbor and rival spectacle maker , Hans Lippershey ( who applied for the first telescope patent in 1608 ) , and claims it was invented by expatriate Cornelis Drebbel who was noted to have a version in London in 1619 .