Encyclopedia > 647

  Article Content


All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
Timeline of microscope technology

... Sigismund III. 1619 - Cornelius Drebbel (1572 - 1633) presents, in London, a compound microscope with two convex lenses. c.1622 - Drebbel presents his invention in ...