On 20/03/2019 13:32, The Natural Philosopher wrote:
On 20/03/2019 09:55, charles wrote:

you'vew forgotten the small measurement "a gnat's whisker"

Gnat's cock.

Gnat's dont have whiskers


if you look very, very closely:


https://en.wikipedia.org/wiki/Gnat#/...Hooke-gnat.jpg

[from Robert Hooke's Micrographia, 1665]

https://goo.gl/images/21VtfM

[from scanning electron microscope]


--
Robin
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