How To Construct A Human Sundial page 176

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How To Construct AHuman Sundialpage 176

• Created for PHCA
• By
• Dick Heckathorn
• 26 October 2K 5

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Locate your latitude and longitude. Parma Hts
Christian Academy Latitude 41.38o Longitude
81.37o
3
Determine where you wish to locate your
sundial. If on the ground, choose a major axis of
5 meters. If on a blue canvas, measure the
longest length (15-16 ft). Then select a major
axis 0. 4 m less
4
Programs Needed

• basicw.exe
• sundial.bas
• Contact Dick Heckathorn
• at 440-826-0834 for programs.

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Obtain Sundial Data

• 1. Run basicw.exe
• 2. Type load sundail.bas
• 3. Type Run
• 4. Input latitude, longitude and major axis when
  requested.
• 5. Print data.

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Gather the necessary materials. Meter
sticks Marking material Optional Blue Canvas,
15-16 ft long Locate the coordinate points using
the following procedure.
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P.H.C.A
E.S.T.
12
1
11
2
10
3
4
9
JUN
JUL
8
5
AUG
MAY
7
SEPT
- 2.00 m
- 2.32 m
- 2.48m
APR
6
E
W
6
- 0.19 m
OCT
MAR
7
- 0.61 m
NOV
- 0.99 m
FEB
5
DEC
8
JAN
4
Draw a straight line in an East-West Direction
equal to the chosen length of the major axis.
Draw a N-S line that bisects the E-W line
Locate the 4 am point where X-coordinate -2.00
m, Y-coordinate -0.99 m
Locate the 5 am point where X-coordinate -2.32
m, Y-coordinate -0.61 m
Locate the 6 am point where X-coordinate -2.48
m, Y-coordinate -0.19 m
Locate the Jan point (-0.80 m) on the vertical
axis.
Repeat for the March -gt December data.
Locate the Feb point (-0.58 m) on the vertical
axis.
Locate the remaining hour points
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It is critical to locate the coordinates in a
true E-W and N-S direction.
True North can be located by using the
activity Using Shadows to Determine Geographic
North
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L