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Home > All Images > 1986 > February > 11 Feb 1986

Images Dated 11th February 1986

Choose from 5 pictures in our Images Dated 11th February 1986 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

Engraving of a Wilson microscope Featured 11 Feb 1986 Image

Engraving of a Wilson microscope

Engraving of a Wilson screw barrel microscope (1720), designed by James Wilson, an English optical instrument maker. The microscope is about 1 inch (2.54cm) in diameter & 2 inches (5.08cm) long. This was a single-lens microscope, a development on Antoni van Leeuwenhoek's earlier idea. The lens (L) fitted inside the plate (K), which was then screwed into the end of the microscope at (G). The screw mount was for focusing. The specimen was viewed by holding the handle (I) & looking at a light through the lens (K). The other end (C) held the condenser lens. (M) is the slider holding four specimens mounted between bits of mica. Reference: MICROCOSMOS, pages 186-187