Re: Pinhole of partial eclipse

Do you have a web address for this search? I have partial eclipse leaf
pinhole shadow images.
Richard Heather
----- Original Message -----
From: "gregg b. mc neill" <gbmcneill@hotmail.com>
To: <Pinhole-Discussion@pinhole.com>
Sent: Thursday, October 24, 2002 10:43 AM
Subject: [pinhole-discussion] Pinhole of partial eclipse

>
>
> hey pinholers,
>
> this is a post from the Cinematography mailing list I belong to. I
thought
> some of you might be interested in this, particulaly in the submission of
a
> photograph to be (potentially) included in this VERY well respected
> magazine.
>
> gb mcneill
>
>
>
>
> Very interesting, because I am looking for a particular photograph of a
> partial eclipse to illustrate a piece I have written for the 'From my
> Library' series I have been writing for The American Cinematographer
> Magazine. For those who may have seen the first one in the September
> issue (there are others upcoming in the November and January issues) the
> idea is to dip into old books that I have in my library and do 'book
> reviews of 100ish year old film books
>
> For a forthcoming piece on the History of Projection I start with a
> quote from Volume 1, No. 1 of the Journal of what is now the Royal
> Television Society, published in Sept 1938. (it is one of the real
> treasures of my library) The very first major article (believe it or
> not) is a history of optical projection which starts off (if the ACM
> will excuse me leaking a preview)
>
> "In Volume 1, No. 1 of the Journal of the Television Society, published
> in September 1928, (the first ever monthly journal devoted to
> television) the first major article, by Professor Cheshire of the
> Imperial College, London, was devoted to Optical Projection:
> It began with the question:
> "Why is it that during an eclipse of the sun the patches of light, which
> are found on the ground beneath a plane tree, and which are formed by
> rays which have passed through the spaces between the leaves, take the
> shape of the eclipsed sun?" ... "In these words did Aristotle, about 350
> B. C. propound his famous problem concerning the optical projection of
> pictures. Nearly 2000 years elapsed before a satisfactory solution of
> this problem was given"
>
> The answer, as we now know, was pinhole projection caused by gaps
> between leaves. Anyway, in the TV Journal there is an illustration of
> crescent shaped blobs of light beneath a tree taken on Bombay many years
> ago. Regrettably the quality if the image is not good enough to
> reproduce in a 2003 edition of the ACM so I have had to make do with a
> picture of every-day oval shape blobs I took beneath a tree in Hyde
> Park.
>
> So, I wonder if anyone in Australia who is in the eclipse zone on
> December 4th would be kind enough to take a copyright-free photograph
> for me, not of the eclipse but of the pinhole image of it on the street
> below a tree ... which is the way ancient astronomers used to study
> eclipses. If I get it in time I would like to use it as an illustration
> (with credit, of course!).
>
> For anyone interested in the subject of pinhole projection, during my
> researches I came across an interesting fairly new book on the subject,
> 'Pinhole Photography' by Eric Brenner, Published by Focal Press, 1999,
> ISBN 0-240-80350-7'. I thoroughly recommend it if for no other reason
> that it has in it one of the most interesting bits of useless
> information I have come across for a long time ... How it was that Pope
> Gregory XIII in 1580 was convinced that the calendar was ten days out of
> sync with the sun?
>
> ... 'Tell me more' do I hear you say? But that, dear CMLers is for
> another night (or subject heading?)
>
> Sincerely
>
> David Samuelson
>
> _________________________________________________________________
> Get faster connections -- switch to MSN Internet Access!
> http://resourcecenter.msn.com/access/plans/default.asp
>
>
> _______________________________________________
> Post to the list as PLAIN TEXT only - no HTML
> Pinhole-Discussion mailing list
> Pinhole-Discussion@pinhole.com
> unsubscribe or change your account at
> http://www.pinholevisions.org/discussion/
>
Received on Thu Oct 24 23:25:39 2002