Antonie Leeuwenhoek

Antonie van LeeuwenhoekIn existographies, Antonie van Leeuwenhoek (1632-1723) (IQ:175|#280) (Simmons 100:55) (Hart 100:30) was Dutch scientist, noted for []

Overview
In c.1672, Leeuwenhoek, while working at a draper’s shop, and being interested in seeing threads closer, and stimulated by a reading of the microscope used (Ѻ) by Robert Hooke (Micrographia, 1665), built a new improved single-lens 200x microscope, as shown below:

Leeuwenhoek microscope

and with this he was the first to view single-celled organisms or "animalcules" as he referred to them

Students
A student of Leeuwenhoek’s was Dutch mathematician and physicist Nicolaas Hartsoeker (1656-1715), noted for his 1678 description of sperm, in a letter to Christiaan Huygens, which he postulated was a little human, therein originating the homunculus theory, and for his c.1694 invention of a screw-barrel simple microscope.

Quotes | By
The following are noted quotes:

“If you dare, you will overcome every difficulty.”
— Antoni van Leeuwenhoek (1719), title page motto to his Letters to the English Royal Society [1]

“A man has always to be busy with his thoughts if anything is to be accomplished.”
— Antonie Leeuwenhoek (c.1670) (Ѻ)

“My work, which I've done for a long time, was not pursued in order to gain the praise I now enjoy, but chiefly from a craving after knowledge, which I notice resides in me more than in most other men.”
— Antonie Leeuwenhoek (c.1670) (Ѻ)

“In the year of 1657 I discovered very small living creatures in rain water.”
— Antonie Leeuwenhoek (c.1670) (Ѻ)

References
1. Finkin, Matthew W. (2009). For the Common Good: Principles of American Academic Freedom (pg. 16). Yale University Press.

External links
Antoine van Leeuwenhoek – Wikipedia.

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