M&D - pp 107-108 Inversion Layers

[jochen stremmel]

This only as an aside, about the depth the author did his research into –
20 years ago when he had to rely on actual books – if he wanted build a
short sentence like There inverted among the Wires, all but flowing.

A-and you may not care if one star or planet is inverted, but with a
constellation that might be different – and hanging there over St. Helena
more than 200 years ago so much better to see.

2015-02-22 20:21 GMT+01:00 Monte Davis <montedavis49 at gmail.com>:

> Wires: http://en.wikipedia.org/wiki/Reticle
>
> The eye is much better at identifying "contact" between a point (of light
> for a star, of shadow for Venus crossing the face of the sun) or shadow)
> and a line -- or better yet the crossing of two lines -- than at judging
> "the point is centered in the disc of vision."
>
> All convex lenses (including those in your eyes) invert the image.
> Opticians figured out quickly how to re-invert it with an extra lens, a
> prism, or a mirror -- but as every bit of glass absorbs and distorts to
> some extent, astronomers generally did (and still do) without that. In the
> absence of a horizon or other features of everyday vision correlated with
> gravity and body movement, who cares if a star or planet is inverted?
>
> On Sun, Feb 22, 2015 at 1:46 PM, Mark Kohut <mark.kohut at gmail.com> wrote:
>
>>
>> https://books.google.com/books?id=0utHAAAAIAAJ&pg=PA115&dq=wires+to+measure+stars&hl=en&sa=X&ei=DCLqVO-3G4iegwTskYDYCg&ved=0CE0Q6AEwCA#v=onepage&q=wires%20to%20measure%20stars&f=false
>>
>> Seems they did refer to 'wires' with(in) (or outside of) telescopes to
>> measure stars. And, the telescope until some later time
>> seemed to invert the image to viewers.
>>
>> Also, re Yellow Dog...another of those loosely--goosey associations, a
>> later century layer of different resonance on Yellow Dog....it is a
>> long time phrase to apply to hard-core Democratic voters in these
>> United States....."a yellow dog democrat"....
>> came about somehow when the dems were for unions.....as Alice---were
>> art thou, Alice?---was always saying: It's about work (too).
>>
>> On Sat, Feb 21, 2015 at 6:52 PM, David Ewers <dsewers at comcast.net> wrote:
>> >
>> > Here in St. Helena we have the Yellow dog as constellation...and The
>> > Southern Cross?   Loosey-goosey... <<
>> >
>> >
>> > Sorry.  Zenith star, not constellation.  But you got my point, I
>> > reckon....<<<
>> >
>> >
>> > On third thought, I'm liking Becky's idea of the wires as imaginary
>> > constellation lines, and the Yellow Dog as constellation... (could
>> still be
>> > something to the telescope lens or mirror idea, though... or maybe the
>> > inverted image suggests that St. helena itself is reversed or upside
>> down,
>> > or underneath?)
>> >
>> >
>> >
>> > On Feb 21, 2015, at 1:41 PM Jolly good day we are having,
>> > <kelber at mindspring.com> <kelber at mindspring.com> wrote:
>> >
>> > And, of course, there's the yellow-dog contract, which amounts to a
>> forced
>> > acquiescence to bad treatment:
>> >
>> > http://en.wikipedia.org/wiki/Yellow-dog_contract
>> >
>> > In keeping with the pretense of offering the right for slaves to become
>> > "free planters," while, in fact, keeping them firmly enslaved (as per
>> the
>> > reference Becky gives below).
>> >
>> > Laura (checking back in after a regrettable absence)
>> >
>> >
>> >
>> > Yes!  More odious deals!
>> -
>> Pynchon-l / http://www.waste.org/mail/?list=pynchon-l
>>
>
>
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