Illustrating Shadows


ASTROLABES
see
DeltaCAD
FREE SUNDIAL PROGRAMS, SOFTWARE (many systems/languages) also has other useful software
Nomograms
 (use them, and even build them)
Legacy computers with GUI simulators and sundial

programs.

 

sundial building making how build make astrolabe deltacad turbocad gnomonics clay stained glass eot scilab octave euler LISP progecad legacy programming excel spreadsheet parametric script VBS fortran cobol pascal vrml basic IBM1401 IBM360 SPS FORTRAN nomogram analemma

CADsystems ~
FREE ~ NanoCAD, FreeCAD, Powerdraw
reclining meridian dialSilver City, NM
G E T T I N G     S T A R T E D
ABBREVIATIONS:  h-dial (horizontal), v-dial (vertical), m-dial (meridian dial), p-dial (polar dial), q-dial (equatorial), etc.
The
parts of a sundial are here.....
WHAT KIND OF SUNDIAL TO BUILD
Before you build a sundial, decide what kind is best. Latitudes between the equator and about 15 degrees N or S would benefit from an equatorial (q) or polar (p) dial more than from a horizontal (h) dial design. On the equator a horizontal (h-dial) is a polar dial so use a p-dial design. At the poles, an h-dial

is an equatorial dial, so use a q-dial design ~

run the DeltaCAD h-dial at low
and high latitudes for fun, they approach the polar dial and q-dial
.
horizontal dials at various latitudes
Saltillo tile dials

above left ~

vertical decliner     
center ~ inclined decliner
below right ~ true south vertical dial
in Persianvery far right ~~ a S 45 W saltillo dial
Saltillo tile horizontal dialPhoenix, AZ
a declining cube dial on a column in Phoenix
scratch or Mass dials I grew up with in Somerset UK
THIS DIAL WAS NOT BUILT BY THE AUTHOR
vertical great decliner(almost east or west but not quite)
Equatorial dial at an equinox
Except for the mass dial (and the astrocompass), the dials here were built by the author.Software and books here help make the dials like those below.
a polar dial in the air projecting onto a wall
The Arizona Centenary dial, Phoenix AZ, by the author

National Sundial

Register: No. 772
a 3d printer printed sundial
GRAPHICAL CALCULATORS [javascript] ~ (smart phone lat/long display can take quite a few seconds)
a ceiling dial in Silver City, NM
A polar dial in mid air, let your eyes drift and you will see it in 3d
vertical dial, calendar curves, by the author, Phoenix, AZ
vertical decliner by the author, Prescott, AZ
S45W  vDec  saltillo tileSilver City, NM Oct 2018"Each Hour Wounds, The Last Kills"Equinox and summer solstice were marked empirically.
Lino Cuts & Prints
wood cuts too
FREE
third edition18+ pagesJanuary 2019
Supplemental
Shadows
FREE
pdf format 150 pages
zip file has extras
Programming
Shadows
FREE
pdf format 450 pagesmany languages etc
vertical decliner, calendar and Italian lines, and daylight saving time, Silver City, NM

or get the big 400 page book for every dial type

Cubic Shadows  (has  theory, practice, good for cube dials)
FREE, making a horizontal and vertical dial, a simple 54 page pdf, also has its own spreadsheet

or...

or...

Simple Shadows  (has  theory as well as practical how-to-do information)
FREE, making a horizontal dial from scratch, a 46 page pdf book, and it also has its own spreadsheet
Everything on
this web site i
s
free