LIFE SCIENCE

Detailed explanation-1: -Antonie van Leeuwenhoek made more than 500 optical lenses. He also created at least 25 single-lens microscopes, of differing types, of which only nine have survived. These microscopes were made of silver or copper frames, holding hand-made lenses. Those that have survived are capable of magnification up to 275 times.

Detailed explanation-2: -Antoni van Leeuwenhoek (1632-1723): father of microscopy.

Detailed explanation-3: -He much preferred using larger instruments with two lenses, but in the Preface to Micrographia [26] he also described how to make ‘simple’ microscopes with a single lens-what became known as a Leeuwenhoek microscope [27].

Detailed explanation-4: -In the 1660s, another Dutchman, Antonie van Leeuwenhoek (1632-1723) made microscopes by grinding his own lenses. His simple microscopes were more like magnifying glasses, with only one lens. But the high-quality, hand-ground lenses could magnify an object by up to 200 times.