Are you sure you want to delete this post?
For this week I’ll spare readers (if my prior essays and rants etc.
have had any). Just a short item of interest to me. Of interest to everyone
should be Riding The Iron Rooster by Paul Theroux. In the book he tells of
travel by train to every far end of China and in between, and finally beyond.
An outstanding book When I finished it, I sent to a grand daughter who had
had spent a semester in higher education in upper-echelon Beijing. Mr.
Theroux’s experience of the country’s astounding span and scope and
spectrum of human differences (and behaviors) just aren’t included in
tourist itineraries or collegiate curriculae!!
Concerning whether the Great Wall of China can be seen from space
That the wall is comprised of segments could be a factor in this “seen
from the moon” being erroneous. But continuity can be a cognitive
extension of separate linears, an “extent-extrapolation”, so to speak.
. The issue of actual eye-optic visibility is that a 2-dimensional paradigm
Is requisite for revelation! Even if we “linearly connect” all the segments The
“nearly 5500 mile length” of the wall (over-all),. . . provides only one of the
two necessary coordinates for visibility. Length alone is insufficient.
Optical process (thus perspective geometry) requires 2 coordinates. And
the 21.3’ at base, l9’ top width of the wall would result in “substantive sub-
visibility”, so to speak.
(Kind of like a foot-long hair from someone’s head stretched-out on the
vanity would not be visible even from across the bathroom!!)
(web search just now confirms: can’t be seen by eye, but
Is evident in NASA computer-enhanced photos)