On Mon, 22 Sep 1997, Thibaud Taudin-Chabot wrote:
Warren,
I don't get it. A horizontal gnomon can only indicate the heigth of the
sun, just like a vertical gnomon can only give you the azimut.
---
Thibaud Taudin Chabot,
On Fri, 28 Nov 1997, Tom Kreyche wrote:
Seattle's long and rarely sunlit winter has begun in earnest.
Or, as a tagline on an astronomy list has it:
Where the Sun is considered a deep-sky object!
I'm experimenting with building dials and want to test the ability of
different gnomon designs
On Fri, 18 Dec 1998, Jack Aubert wrote:
IMHO, the bottom line on wood-for-sundials is that wood is basically an
unsuitable medium for this purpose, however there are some synthetic panels
which have woodlike properties and may contain some wood that could work
quite well.
I once stopped
, considering the source to be far beneath you,
Fernando, and hang in here with the rest of us who are not afraid to admit
we don't know everything!
Dave Bell
From Fred Espenak's wonderful Eclipse Pages at NASA, I found the following
two solar eclipses in 1582. The first was total, but of quite short
duration (and) low magnitude, with the maximum 110 degrees East of
Greenwich. The second was Annular, with it's maximum in the southern
hemisphere.
I meant to include the URL for the Eclipse Pages:
http://sunearth.gsfc.nasa.gov/eclipse/eclipse.html
Dave
On Sat, 20 Feb 1999 [EMAIL PROTECTED] wrote:
Regarding Jim Morrisons request for lunar eclipses in 1582. I ran an
astronomical simulation for 1581-1583. There were no (umbral) lunar
Fred and Tex:
After reading the exchange on here today, I went back and re-read Fred's
Compendium article, looking closer at the development of the gnomon shape
as a cycloid. Sketching the path of a point on a circle, rolling on a
line, I see the gnomon's shape (convex away from the line) as
On Sat, 13 Mar 1999, Jack Aubert wrote:
But isn't it literally wrong? As long as there are 60 minutes in an hour,
how can 24 of them vary at all?
Les dur?es de vingt-quatre heures egalent toujours 24*60 minutes...non?
N'importe le p?riode de l'ann?e.
I think it's just a case of unclear
On Tue, 16 Mar 1999, John Pickard wrote:
When I was a kid at school more years ago than I care to remember, I
was taught that Lieutenant James Cook RN came out to Australia in
1770 (or was it 1772??) to have a look around, and also to observe
the transit of Venus in Tahiti.
So my
On Wed, 24 Mar 1999, John Pickard wrote:
Roger's comment re sun compasses is correct and also applies
partially to Antarctica.
|
|
Of course, GPSs have ended all that!
John
But GPS still makes it a pain to lay out a N-S line, unless you have a
very long baseline, or a very high
On Fri, 30 Apr 1999, Jim_Cobb wrote:
why don't you Anglophones try the metric system?
- fernando
Perhaps you should consider us bilingual in terms of units.
Technically inclined (and many other) Anglophones use both English and
SI units with comfort, though we prefer one set for some
On Fri, 30 Apr 1999, Fernando Cabral wrote:
Now, I hate when I see something like 2 yards, 2 feet, 5 inches and
(the stroke of mercy) 1/8 -- It takes me several seconds to figure out
how tall that person is!
Or when I see specifications such as:
Torque wheel bolts to 50 foot-pounds (6.9449
On Fri, 30 Apr 1999, Fernando Cabral wrote:
By the way: does stroke of mercy make sense in English?
Yes, but we really never translate it - from the French! Coup de grace
Now I am sure it makes sense. But if I were to say coup de grace
I would be accused of suffering of francophilia.
-boggling!
John Carmichael
Tucson
website: http://www.azstarnet.con/~pappas
Dave Bell
On Wed, 5 May 1999, Phil Pappas wrote:
Hello dialists:
I conducted over thirty different experiments using all sorts of hole,
crosshair and bead diameters. The objective, of course, was to find the
style which cast the smallest point of light or shadow onto the analemma.
The design
On Sun, 16 May 1999, Chuck O'Connell wrote:
The most unusual way I've ever seen sunspots is *directly*.
I was driving west at sunset on an *extremely humid* hot
august evening. As my car crested a hill the
sun was sitting on the horizon, *easily* viewable because
it was so washed out by
On Mon, 17 May 1999, John Carmichael wrote:
Hi Ross:
Getting a small, very long focal length lens (or mirror) to replace the
pinhole
can solve the problem, at the risk of introducing some image aberrations,
including chromatic, visible at the edges of the solar disk. This was of
course
On Thu, 24 Jun 1999, Arthur Carlson wrote:
Tony Moss wrote:
I found a couple of web sites on signal mirrors.
http://www.equipped.com/signal.htm#ReflectionsOfLight
describes how they work and how to use them. I also made a sketch of how
I think it works. The attached bit map file shows
Wonderful story, Tony! Often, the obvious theoretical explanation is
just shy of the mark...
So much for theory! :-)
I'm reminded of making toy paddle boats with children of the sort where a
rectangular notch is cut at the back of a plywood 'boat' and a cruciform
paddle is driven in the
90 degrees?
On Mon, 19 Jul 1999, Charles Gann wrote:
Greetings fellow diallers,
This is a bit simple, but I thought it fun anyway.
From almost every point on earth, a person can leave their home,
travel north a given distance, then travel east the same distance, and
finally travel
On Sat, 24 Jul 1999, John Carmichael wrote:
But beware! I found out a while back that most copiers will not reproduce a
copy to the exact size that you program it to do. Yesterday, I showed the
surprised manager of Kinko's (a respected fotocopy shop) that when we
fotocopied a 16 ruler at
On Sat, 28 Aug 1999, Peter Abrahams wrote:
Used for timing meridian passage of the sun, accurate
to a few seconds. It was a simple device, a hollow 90 degree prism, 2
sides silvered. At meridian, two images of the sun - one from glass side,
one reflected off both mirrors - would coincide.
Alexei:
Hit the German Space Operations Center, and enter your locale specifics.
Bookmark the page you go to when you hit submit, and use that for future
searches:
http://www2.gsoc.dlr.de/scripts/satvis/detailform.asp?
lat=35.8870lng=14.4030loc=MdinaTZ=EET
(combine the long lines above, and
subscribing through HotMail, NetAddress, or the like. With these, only
the header is displayed, until you select a message to open. There is an
added burden of graphics and (small) advertising banners with these, but
they still may be an economical solution.
Dave Bell
On Tue, 7 Sep 1999, Malcolm Purves
On Thu, 9 Sep 1999, Lufkin Brad wrote:
I wanted to announce a new release of my Sundials program for the Macintosh.
I'm working on a version for the PC, using the same code base and having the
exact same features, for release soon.
Regards, Brad
... with bated breath!
Sounds great, Brad!
On Fri, 10 Sep 1999, John Carmichael wrote:
Hello all:
I've got a little simple question that I'm not quite sure how to answer.
What would be the correct definition of the type of time shown by a sundial
which is longitudinally corrected, but NOT corrected for The Equation Of Time?
On Fri, 10 Sep 1999, Lufkin Brad wrote:
I'm impressed that you chose to program in PostScript. Why not a more
user-friendly language? Just wondering
From: john hoy
Subject:paper equatorial dial with pencil gnomon
I have rewritten my equatorial dial in native
Hmm - this sounds remarkably like the commercial globes I saw a couple
weeks ago at a warehouse discount chain here (Costco / Price Club)! They
were maybe 10 diameter, and I remember them being reticulated in brass,
but whether the lines were lat/lon or borders, I don't remember. Tagged at
a day or so to set up, but I will announce it soon.
Dave Bell
[EMAIL PROTECTED] (note that this is a pseudo address. If you
use this for sending me the above, it will
be easy to keep separate from other mail!)
On Thu, 23 Sep 1999, Planocka Vit wrote:
I have recently noticed an offering on ebay.com of an interesting
device, a solar slide rule that should predict the time and azimuth
of the sunrise and sunset for a given location. (I actually think
that it shouldn`t be called a slide rule, just a
Announcement:
David Gagnon has sent me a set of images of the Schmoyer Sunquest dial,
to post on my archive page. Visit the site at:
http://dialist.webjump.com
I have three links there, so far, and Dave's pages should be clear...
Dave Bell
incorporate that detail?
Dave Bell
On Thu, 14 Oct 1999, David R. Gagnon wrote:
Dear Anton
Regarding the use of the Schmoyer sundial in the Southern hemisphere:
There are no markings cast-in on the sundial castings except for the
name of Richard L. Schmoyer on the backside of the gnomon
By my reading, the dial in the photo indicates just barely after local
noon. The helix is aligned with the Earth's axis, and it is in the
northern hemisphere, so North is to the left. The Sun is shining on the
band so that the shadowed portion looks just slightly shorter than the
lighted
On Sat, 4 Dec 1999, Daniel Lee Wenger wrote:
I wonder if anyone in this group knows of software that converts a
Word file to a gif or jpeg
or a
postscript file to a gif or jpeg
or a
PDF file to a gif or jpeg.
Thanks for any help.
Dan Wenger
Daniel Lee Wenger
Santa Cruz, CA
On Wed, 22 Dec 1999, Jim_Cobb wrote:
Has it occurred to anybody else that many proprietors spreading
prophesies of gloom and doom come Jan. 1 are gladly peddling food,
water, battery-powered generators and other expensive wares on credit?
-- John McCaslin
True! And
Hah! That's exactly the outlook my wife accuses me of!
On Fri, 24 Dec 1999, Jack Aubert wrote:
What use is any of it if you can't connect to the Internet?
Maybe you'll survive for a while, but what kind of life will it be?g
Jack
At 12:30 PM 12/22/99 -0800, Dave Bell wrote:
In all
On Mon, 27 Dec 1999, William P Thayer wrote:
Of tangential interest to some, this page I?just found, by a namesake (not
me):
http://www.jug.net/wt/danielle/F.htm
They ask for the length of the shadows; I?think they're in over their heads...
Especially since they got the triangle
On Wed, 29 Dec 1999, Fernando Cabral wrote:
As to the loop, it seems things like
for ( ; n ; ++n)
mistifies more than any otherthing with the probable exception
of things like
a = a ? b : c;
- fernando
Or: a ^= b ^= a ^= b
Dave
D'oh!!
On Wed, 29 Dec 1999, Lufkin Brad wrote:
the semi-colon is on the next line!
-Original Message-
From: Fernando Cabral [mailto:[EMAIL PROTECTED]
Sent: Wednesday, December 29, 1999 11:25 AM
To: Dave Bell
Cc: sundial@rrz.uni-koeln.de; Slawek K. Grzechnik
Subject: Re
On Sat, 1 Jan 2000, Colin Davis wrote:
1,1,[EMAIL PROTECTED]
Iam Millemium compliant hope you are@@
73 88 de
colin and co
Well, *I* won't know if I'm Millenium-compliant for another year (+7 hr),
but I see that you are at least Y2K-compliant!
Have a great New Year!
Dave
There is a difference, besides the use of PR instead of PA, as Ron
pointed out. (I believe both are supported, in each language. The
substitution of smeicolons for carriage returns is common, also.) If you
look closely, you will see that the order of the arguments coordinates,
for the most
-scale to the adjacent row, and 5 columns, each with a different ratio
of central obstruction radius to outer radius. I haven't had a chance to
test them yet, as it's somewhat hazy here today; maybe later!
Dave Bell
N37.28W121.96
http://dialist.webjump.com/
http://www.crosswinds.net/~dialist/ (Once
On Tue, 25 Apr 2000, Ron Anthony wrote:
Fer,
You are right about the error. Originally I had -(dEpsilon), but wanted to
clean it up.
This is a good example of the differences with call by reference and call
by value. I believe the default is call by reference, which means the
address
to the
current date, as labelled on the analemma...
Dave Bell
N37.29W121.97
closer to the date
line than 0600 and 1800. These automatically correct for the varying
shadow lengths per time of day and time of year...
Does this make sense?
Dave Bell
N37.29W121.97
Hi, John!
Of course your comments about analemmatic dials are correct, but If you read
the thread carefully you will see that when I wrote:
Also, in order to be able to tell time with short shadows around noon in
the
summer and to accomodate short people, it will be very important to
Roger Bailey has generously shared his Excel spreadsheet design aid and
NASS presentation on Analemmatic dials with the sundial community. I have
just finished uploading them to the Sundial Image Archive sites:
http://www.crosswinds.net/~dialist/
http://dialist.webjump.com/
Dave Bell
N37.29
Hi, Troy!
I'm curious about analemmic sundials. Is it possible to move the gnomon of
the dial (along an analemma course marked with the proper days) to achieve
the same effect? I wonder since the analemma would likely be confusing to
laymen viewing the dial.
Well, if we're talking
On Sat, 16 Dec 2000, The Shaws wrote:
I guess the day started at noon due to the difficulties in determining
exactly when midnight occured.
Early time systems used Sunrise, noon or sunset to start the day - all
easily determined without the use of an accurate timekeeper.
Mike Shaw
archive sites I maintain:
http://www.crosswinds.net/~dialist
and
http://dialist.webjump.com/
Dave Bell
the Arizona/Utah border, New Mexico/Colorado, Oklahoma/Kansas,
Missouri/Arkansas, and Tennessee/Kentucky... Not bad, for such a simple
device!
Dave Bell
N37.3 W122
On Thu, 10 Feb 2000, John Carmichael wrote:
Hi Chris:
You're right! I realized as soon as I sent my message that a small diameter
floodlight with a wide beam would be better than a tight beam, because it
must illuminate the entire style and not just a portion of it.
Also, the smaller
mechanism), and I published a cheap-and-cheerful small version in the
BSS Bulletin October 99.
John:
Are you at liberty to re-print that design for us, say to put up on the
archive sites?
Dave Bell
On Fri, 11 Feb 2000, John Carmichael wrote:
Since the calculation of arcseconds is a bit complicated, what would help
would be some sort of precalculated table which would give the maximum
readability distance for different shadow widths. For example, the table
might say that a 1/4 inch
On Mon, 14 Feb 2000, The Shaws wrote:
Actually, the old UK length system is a curious mixture of decimal and
non-decimal
Start with a mile
Take half = half a mile = 880 yards
Take half = a quarter mile = 440 yards
Take half = 1 furlong = 220 yards
Then, here is where horse racing
On Tue, 15 Feb 2000, Gordon Uber wrote:
Third minutes (sixtieths of second minutes) are not in common
use, although I would note that the third minute of an hour is the period
of U.S. power main standard 60 Hz alternating current. Coincidence?
Hmm... Surprised I never noticed that!
, not 1 arc minute.
However 4.848 microrad = 1 arc second, or approximately 5 microrad.
You may be thinking of 1 arc mjnute = 0.2909 mrad
Gordon
At 02:13 PM 2/15/00 -0800, Dave Bell wrote:
Whups! You meant a *degree* is ~17 mRadian, didn't you? An arcsec is very
close to 0.3 mR or 300 uR
Hi, Gianni!
On Mon, 24 Jan 2000, Gianni Ferrari wrote:
I attach a different example of Monofilar Sundial , realized with the
program SUND98P : vertical plane declining 40 West; the pole is horizontal
(f.e. the edge of a balcony) and the date lines are vertical straight lines.
I see how
, especially in the winter...
Dave Bell
N37.28 W121.96
set available for local
installation on members' PCs? It's quite modest in size, for any recent
application, and would be directly accessible to any browser, without
going on line...
Dave Bell
erosion, the craters remain for our puzzlement...
Dave Bell
N 37.277285 W -121.966391
and explanation!
Great Web site!
... and exceptionally reasonable price!
Thanks for the pointer!
Dave Bell
N37.2W121.9
Looking closely at the photo, I saw some interesting details:
Below the water-filled 'gnomon', there is a semicylinderical, angled
wall, apparently to catch the index spot. (About 2 radii from the center
of the cylinder)
Why is there a gap in the wall, about noon (1300 Summer Time)?
Above
. A combination of
the two would be really, really nice!! :{)
Dave Bell
W121.9N37.3
-plotted paper. (I'm sure
their paper spec is quite different from common plotter paper!) Except for
universal designs, dial manufacturing wouldn't profit from quantity
production, unfortunately...
Dave Bell
W121.9E37.3
!)
Dave Bell
W121.9N37.3
number 1729 and remarked that the number seemed to me
rather a dull one, and that I hoped it was not an unfavorable omen.
'No,' he replied, 'it is a very interesting number; it is the smallest
number expressible as the sum of two cubes in two different ways.'
Dave Bell
N37.3W121.9
I'll go for one, Ron...
Let me know when, how, how much, you want!
Dave
On Mon, 27 Mar 2000, Ron Anthony wrote:
All,
PLEASE NOTE: Version 4.0 For WindowsT 95, 98, NT(4.0), or 2000
NO WINDOWS 3.1 or MAC.
DeltaCAD has two offers:
Standard Quanity discount: 10 copies bought at
I'd call it a fairly expensive joke!
Note that a real dial should, roughly speaking, have the hours from 0600
to 1800 in a semicircle, running from East through North to West (in the
northern hemisphere). This is a clock face, with only room for 12 hours in
a day!
Dave
On Tue, 17 Oct 2000,
/~dialist/
and
http://dialist.webjump.com/
Take a look - this is a very nice design!
Dave Bell
On Thu, 9 Nov 2000, John Davis wrote:
Does anyone know of a good source for computer fonts (preferably
Windows-compatible) of antique characters?
There are many sites with free- or share-ware fonts available. One that
offers a few free sets, and has a LOT of quality fonts and graphics is:
On Mon, 18 Sep 2000, Sarah Edmondson-Jones wrote:
However, I have had very good success saving as dxf using a free
drawing application called Autosketch (available for download on the
web somewhere - try www.autosketch.com ).
As with many good things, no longer free, as far as I can tell!
suppose we could place the
solar image on a starchart, given the date and time of the image. Any idea
what the horizontal line artifact through the brightest star is? We know
that Saturn is in the opposite part of the sky this year!!
Dave Bell
On Wed, 3 Jan 2001, Richard Langley wrote
On Wed, 3 Jan 2001, R.H. van Gent wrote:
The LASCO (Large Angle Spectrometric Coronagraph) instrument is designed
to observe the solar corona (the very faint outer atmosphere of the
Sun).
The bright object left of the Sun in the LASCO C3 image is Mercury and
the horizontal line appears to
I think it has just been quiet. Perhaps there's no Sun in most of the
northern hemisphere, and it's just depressing?
Dave
On Fri, 26 Jan 2001, -ce- wrote:
Help !
Am I casted away ?
Has the sundial list a problem ?
I didnt received any other messages, only those from Tony Moss (thanks
On Mon, 29 Jan 2001, Stalzer, Robert wrote:
(3) As you may suspect, the 9-digit code would be perfect for determining a
site's sundial parameters, if only one could find the correspondence between
the code and some GPS-style coordinates. Most of us don't know our house's
9-digit zip code,
would personnally side with Gordon Uber's thoughts, of limited amounts
od commercial copy in the same discussion group, with the bulk of the
advertising on referred Web pages.
Dave Bell
evaluates to less than the straight-line approximation, while the
other estimate evaluates to greater.
(As the ellipse collapses to nearly a straight line, it seems clear that
the perimeter approaches that of a rhombus, 4 * sqrt(a^2 + b^2)...)
Off to look for more guesses!
Dave Bell
37.3N121.9W
On Sat, 17 Mar 2001, Patrick Powers wrote:
The sort of approximation you consider for the
circumference is behind Ramanujan's approximation too. Only he uses a more
elaborate method than a simple mean and as a result his formula is exact
for the case where the ellipse is virtually a circle
Even easier, Fernando: Invent a spherical, but hollow Earth, with the
Sun quite close, at the center! Perfectly common design for a
sufficiently large, and sufficiently advanced space habitat, or entire
civilisation, living within a Dyson Sphere...
Dave
On Thu, 29 Mar 2001, Fernando Cabral
recreational possibilities, as well, for low-G mountain
climbing at the endwalls, and free flight in the space above the living
surface...
Dave
On Thu, 29 Mar 2001, Fernando Cabral wrote:
Dave Bell wrote:
Even easier, Fernando: Invent a spherical, but hollow Earth, with the
Sun quite
Hi, Frank!
You're right, I noticed no-one mentioned the sundial possibilities. The
biggest problem is that the Moon rotates so slowly. You will have
approximately equal days and nights of 14+ Earth days each! The equation
of time becomes extremely more complicated as well, as the Earth-Moon
Very nice site! It was interesting to see how downright
LOGICALLY the dimensions, material, shape, and finish of
the various denominations are layed out. US and UK could
take some lessons here...
Dave
37.3 N 121.9 W
On Thu, 19 Apr 2001, Richard Langley wrote:
See also:
On Tue, 1 May 2001, Steve Lelievre wrote:
Gianni wrote:
As in almost all Web sites, also you take as positive the Longitudes for
places West of Greenwich.
The Explanatory Supplement to the Astronomic Almanac (USNO 1992) at page
203 affirms:
The geocentric longitude is defined by
On Thu, 31 May 2001, Frans W. MAES wrote:
Hi all,
You may want to enjoy a very impressive horizontal sundial with many extras
in Bad Bevensen (Germany), presented on a website very well done by
Rainer Boldhaus.
URL: http://www.bad-bevensen-info.de/sonnenuhr/
The site is (still) in
At a first guess, an answer to the second question may explain the first:
I would guess the diagonal lines (the 19 hour appears to be on a line
parallel to the one running right through the dial) are hour lines for a
different gnomon, perhaps roofline, corner, etc.
Dave
On Mon, 13 Aug 2001,
On Mon, 13 Aug 2001, John Carmichael wrote:
Knowing the apparent diameter of the sun, the size of the mirror, and
the distance from the mirror to the ceiling, how could I calculate the
diameter of the sun spot?
Take the limiting case, of a (nearly) zero-diameter mirror. This is
exactly the
- it neither refuses to run, nor unilaterally sets the screen
to 640x480, 16 colors!
* The damned thing actually WORKS, at first release!
You'll have to work much harder, if you want to succeed in this Windows
world!
By the way - thank you for sharing this!!
Dave Bell
Hi, John!
Yes - the modern, digital replacement for the rising/tilting lens board
of a view camera! Where once we contrived to have the plane of the object
being photographed, the plane of the lens center, and the film plane all
intersect in a single line, we can now correct in the digital
On Sat, 6 Oct 2001, Bill Thayer wrote:
Can someone tell me, please, what the G stands for?
G = Gradus = Latin for degree; whence the name of the failed metric unit.
Andm as I recall, Gradus was followed by Minute and and Second Minute,
(reading those as minoot, I suppose). I'll have to
The discussion has come back around to perspective correction with a lens
and rising-front camera vs. correcting in the digital domain. I have to
say that, as much as I like the elegance of the optical/geometric
solution, the end result should be at least as good, done in PhotoShop or
the like,
I know that there are other people who prefer not to have email in HTML
but I can't speak for them.
I also read email with Pine on a Unix system, and definately prefer plain
text!
Dave Bell
Newbury, England
51.4N, 1.3W
Dave Bell
37.3N 122W
On Sat, 10 Nov 2001 [EMAIL PROTECTED] wrote:
Didn't see any response to this request.
I don't think I saw the original; I think a few posts slip through the
cracks...
Starting with an Armillary Sphere dial design a Season dial could be
constructed.
1. The Central rod gnomon is
was
beginning to slow down a bit. Definately one to remember!
Dave Bell
37.29N 121.97W
On Sun, 18 Nov 2001, Roger Bailey wrote:
At 2:30 MST this morning (9:30 UT) we were standing in an open field under
the clear dark sky to observe the Leonid meteor shower. The temperature
was -6 C. The stars around
Great shots, Tom!
Not sure why - it may be a configuration problem on my end - but the avi's
don't display under Netscape. Works great with IE...
Dave Bell
37.29N 121.97W
On Wed, 21 Nov 2001, Tom Kreyche wrote:
For those interested in other aspects of astronomy, I posted some video
clips
I think I have to disagree here, Edley: A small mirror does indeed mimic a
pinhole aperture, and the resulting image would also move quickly along
the tangent surface. However, neither a plane mirror nor a pinhole
actually focusses the Sun's image! A pinhole lens works by limiting the
rays passed
OK, that I can see - if you first project a (real) image of the Sun, then
reflect a spot from that, you would be creating a very high magnification
solar telescope, at the projection plane. Difficult to see a way to make
this in any way a continuous motion, but it's definately a start! (I
I had to start a search to find some pictures of these...
The main site for the contest is above this one, but the
pictures seem to start here, on the results page:
http://www.cityline.it/CULT/frame_orosolari.htm
Dave
37.29N 121.97W
On Mon, 24 Dec 2001 [EMAIL PROTECTED] wrote:
Congratulation
Nice idea, John!
Moving the laser pointer a precise distance horizontally isn't really
necessary, nor exactly what you want. I think the requirement would be to
move the pointer along whatever axes you need to, but without changing
it's angular orientation. That way, you move from the pointer
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