Please note that my new email address is da...@davidbrownsundials.com. I have
tried to contact the uni-koeln address manager, but to no effect, to transfer
my 'account' but to no effect. how do I do it?
David Brown
Somerton, Somerset, UK
Silas Higgon of BSS includes tham on some of his armillary spheres. He may
know details of construction.
David Brown
Somerton, Somerset UK
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In general, marble is not favoured for exterior stone work in UK - pollution
and all that, not to mention algae etc.
Surprisingly, black/dark slate with a matt finsih gives a very good surface for
shadows.
David Brown
Somerton, Somerset, UK
-Original Message-
From: Roger Bailey
Has anyone worked out a value for this acceleration, and timings involved in
start-to finish of the terminator tack up a building of presumed height?
David Brown
Somerton, Somerset, UK
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Can anyone tell me which is thought to be the earliest UK sundial?
David Brown
Somerton, Somerset, UK
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I must be getting old...
I'm doing a design for an analemmatic dial in France.
France is in the GMT time zone but chooses to be +1 on GMT in the winter
months and +2 in the summer months (daylight saving).
I have the co-ordinates etc for the dial's lat and long - no problem
Dear John and all the rest
Herewith some translations kindly supplied to me by my former classics
teacher, Michael Bishop, now in his 80's but who thoroughly enjoys a puzzle or
three.
1) OMNIA FERT AETAS SECUM, AUFERT OMNIA SECUM [I suspect the comma
should follow the
Thanks, Bill. Good stuff.
David Brown
Somerton, Somerset, UK
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The Stone Federation GB may have the answer
_www.stone-federationgb.org.uk_ (http://www.stone-federationgb.org.uk)
Let us know how you get on.
David Brown
Somerset UK
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The cost of a tungsten-carbide-tipped lettering chisel is about £15, and of
a suitable dummy about £25. Not much cost, but quite a bit of skill needed.
David Brown
Somerton,
Somerset UK
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I recently acquired a modern reproduction shepherd's dial. On it is an
inscription in latin:
Quaere diem anni eique respondentem locum solis
cui applicandus superne stylus competens
longior, sole existente in signis borealibus
brevior in austrinis:
et umbra , rectis parallela, extremitate
In 1917 Dom Ethelbert Horne did a survey of scratch dials ('Primitive
Sundials or Scratch Dials') in Somerset and published a book on his findings..
I
understand (from my 1929, second edition) that that the second half of that
first edition consisted of a list of all the Somerset churches
Just to correct some wrong information..There was a book for
schools written through the auspices of the Bristish Sundial Society by a group
of members of which I was only one of nine on the team. It was called Make a
Sundial, and brought out in 1991 in response to many queries
The moving sun shines on you, unmoving.
It refers to a stationary gnomon while the moving sun casts the shadow.
I used an inscription simil;ar to this on an anelemmatic dial some years ago.
David Brown
Somerton UK
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Dear Keith,
Just a few tips..
Painted sundials on playgrounds are quick and easy, but they need to have
the markings repainted at fairly frequent intervals. You'll need to have studs
hammered into the playground to give you the reference points for each
repainting.
Dials set into
I am soon to commission the making of a brushed stainless steel equation of
time plaque to go with a sundial. Experience of two plaques in recent years tell
me that the black paint (or whatever) used to in-fill the etchings does not last
more than a couple of years or so. Has anyone got a
I'll second that.
David Brown
www.DavidBrownSundials.com
Somerton,
Somerset.
UK
--
Is there a simple solution to this problem?
Two meeting vertical wallseach decline 5
degrees away from south. The meeting surface is a curve of radius about2
metres. There is thus a vertical cylindrical curved surface whose centre line
faces south. The curved surface is about 1
For a protestant - words spoken by the first protestant, Martin
Lutheron posting his 95 Theses on the door of the Worms cathedral-
the diet of Worms. Also very appropriate for a sundial. I did one for a
Methodist minister in N. Ireland with this on it - also v. appropriate for him
in that
I sent an email to the group sundial@rrz.uni-koeln.dea
couple of days ago, with two attached files of photos. Did anyone receive them,
or should I send again?
David Brown
Somerston
Somerset, UK
I rarely use the stuck-on paper technique (using wallpaper adhesive), and
never on slate (which is easy to 'draw' on accurately with a light scribe and
whose marks are easily rubbed off at later stages). However, two examples spring
to mind. The first was on sandstone for an analemmatic dial
Good program, and I use it frequently.
Quite often, when drawing out large sundials for cutting in stone, I need
to have co-ordinates of date curves so that I can get the shape correct,
particularly at hours well before and after noon. Is it possible to extract
co-ordinates (cartesian or
It is misleading, surely to talk about horizontal gnomons on roman
Berossus-type dials. The only purpos of the metal 'gnomon' is to provide a
support for the nodus tip, which is the only part of the 'gnomon' that it used
for telling the time and/or dateon these dials. The support could come
Does the cubical dial onMaud Heath's causeway in Wiltshire
qualify?
David Brown
Somerton, Somerset, UK
Dear Friends, I am designing a sundial for a client in Stockholm.(Time Zone +1). Does Sweden have a daylight saving regime, and if so, what is it called (as 'BST' in UK), and is it +1 or +2 on GMT?
David Brown
Somerton, UK
Made by John Oliver, probably, in 1653, described as being in its original location and declining approximately S50E. From a wax 'rubbing' of the dial and 'working backwards', the declination is close to S45E although some of the lines are a little wayward. I am undertaking the construction of a
David Brown
Somerton, Somerset, UK
David Brown
Somerton, Somerset, UK
What hour lines should be inscribed, and in what places, on an inferior polar dial for latitude 52N? The centrally-placed gnomon is 13 units high, the overall plate width (east-west) is 37 units and the north-south plate height is 26 units.
Thank you for the various replies sent in (4).
I
What hour lines should be inscribed, and in what places, on an inferior polar dial for latitude 52N? The centrally-placed gnomon is 13 units high, the overall plate width (east-west) is 37 units and the north-south plate height is 26 units.
David Brown
Somerton, Somerset, UK
Thanks for your interest, Chris
David Brown
Somerton, Somerset, UK
David Brown, Somerset, UK
[EMAIL PROTECTED]
www.DavidBrown Sundials.com
David Brown
John...Have I missed some info? What is your technique for matte gold
plating of brass sundial parts? How delicate are the finished parts (for
fingering,etc)
I'm sending this from Raleigh NC, where I am visiting (from UK)for 1 week. I
went to Savannah yesterday - passing through en
Tony...Please send me etching technique notes and jpegs. Thanks.
David Brown.
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Thanks, Mike, for the photos.
Whatever next? Good luck to them!
David Brown
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Fascinating. Weird and wonderful! I hope that the architects/designers have
got some good gnomonic science/sense behind their designs. I have three
experiences of designers/architects and sundials.
1. The large vertical dial (2 m square) on top of a one-storey building
needed to be observed
PREI see that the caption to a photograph on the Manchester news web page
(www.manchesteronline.co.uk/news/stories/Detail_LinkStory=48875.html) tells
us that Craig Martin's sundial works at night, Wow!
-
PREThe answer to all John Carmichael's shadow shapener problems at Kitt Peak!
-
PREJohnI can open all the pages saisfactorily except the one on
prices and types of sundial. I'd be glad to know whether you can view all of
my wesite without flaw. David BrownSundials.com
-
PREThanks. David
-
PREI don't think you should include 'garden' as a type of horizontal sundial
-
or any! Gardens could have as many types of dial as exist! David Brown 51.05N
2.74W
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I couldn't get the Sundial Types and Prices page to download. Is there a
glitch, or is it me? Glad youi're still active, having met you at BSS
conference at Dunchurch (in 1999?). Have you got a photo of your Kitt Peak
dial from the air (or even from the ground)?
David Brown
51.05N 2.74W
-
PREI have taken up the challenge of a desk-top polyhedral dial with Esther
Hope
and work is progressing nicely! She is very content with work done so far.
David Brown
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PREJohn. Are you sure the email address of the polyhedral lady (Esther Ammon)
is
correct? David Brown
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PRENice point, Frank. The virtue of using astrological symbols to signify
dates
on curves on a dial is that they are much easier to carve than a seriies of
numbers/letters, and take up less space. They're also pictorial, which adds
to the fun of a dial. David Brown 2.05W 52.75WN
-
Presumably you're interested only in the genuine article - not new
heispheriums?
David Brown
51.05N 2.75W
-
PREHave you got the plaster cast dial that's in the Science Museum, London?
It's
a plaster cast of one at Hever Castle. David Brown 51.05N 2.75W
-
PREIt could just be an aberration in the making of it. A long time ago I made
a
dial for an 80th birthday present. It wasn't until after the presentation and
delivery of developed photos that I realised that I had put the hours as
5,4,6,7,8.. And so it remains!
-
Thanks to all those who have contributed to the discussion on stainless
steel.
David
2.05W 52.75N
-
I always do mine clockwise. The hours go clockwise (N. hemisphere), and
visually it would jar the senses to have one sequence go clockwise (hours)
and the other anticlockwise (months). Gnomonically/astronomically speaking,
it doesn't make any difference.
David Brown
2.05W 52.75N
-
I am in the early stages of a project that is likely to involves the making
of a stainless steel sundial - possibly equatorial, possibly armillary
sphere. I ned to get in touch wit a stainless steel worker, preferably
UK-based, preferably who has experience in sundial-making. The project might
PREThanks, Willy. David
-
Why not print a copy of your image the right way round on a transparency
sheet, then photocopy the transparecy image the wrong way up? David Brown
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Take a look at my website - DavidBrownSundials - for examples of dials done
in stone- all by hand. Expect 'life' to come into your dials only with
hand-cut features. Much time spent per dial - typically a week to make for a
straightforward horizontal dial - not counting the hours involved with
port...originated in 17th cenrtury, referring to the side of a ship usually facing the port (the place where a ship could load/unload.
larboardMiddle English lathebord, lad(d)borde, probably 'the loading side', but influence be 'starboard'. laden = to load, LADE + bord, the ship's
CharlieWhat exactly is it that you do not understand? David Brown
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My feeling is that the simpler you make the dial, the more likely it is to be
used/understood. So.make a dial with only one scale of hours, arranged to
show local time i.e. noon line vertical, and noon (preferably) or 1pm marked
on that vertical line. then in the equation of time
Hi, JohnThe port side is the left side of the aircraft/ship.
David Brown. David Brown Sundials, UK
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The names port and starboard come from ancient ship-lore. Most people are
right-handed, They would steer the ship with the right hand using a plank - a
steer-board, down the outside of the ship near the stern. Hence steer-board,
and right-hand side of ship. The other side of the ship would be
Please send info to me when available [EMAIL PROTECTED]
-
Have you also checked out the roman mosaic which includes a sundial at
Brading, Isle of Wight, UK. The central subject is a black-bearded astronomer
seated by a pillar with a sundial on it, pointing with a stick to a globe
below it, and a vase with what seems to be a pen sticking out of it on
Tony Moss - nice to hear of your offer re OHP materials and PDF/JGIF diags on
Adobe Illustrator. Also interested in your JPEGs of shots of the 3D version.
Please send whatever you can. Thanks. David Brown
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Wall declination using carpenter's square. Look in Waugh, and follow the
method suggested where he has a nail through a vertical board pressed against
the wall.
David Brown
-
Tony Moss - nice to hear of your offer re OHP materials and PDF/JGIF diags on
Adobe Illustrator. Also interested in your JPEGs of shots of the 3D version.
Please send whatever you can. Thanks. David Brown
-
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