Sundial and Calendar
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1:15
Sun Fun Activities Make a Sun Clock.wmvby csarnoldbooks4,778 views- 2:04
Sun Dialby iamnetminder1,085 views
- 1:15
♪♫♥ALT- key symbol codes♥♫♪by holiday34691360,384 views
- 2:45
Reflex_Sundial_Winter_Solstice2007by kopernikus0072,355 views
- 4:23
DC Mall TimeLine & Solar Mayan Calendar 2007 ~ 2012by VIDMAND37,028 views
- 1:39
Homemade Geodesic Domeby rpetresco25,259 views
- 0:51
Mooncup HOWTOby harital245,000 views
- 0:48
Wood Radioby Woodmanjack11,490 views
- 0:41
Focusing Sundialby billgottesman871 views
- 1:50
Fairbanks, Alaska: Sundial at high noon on Summer Solsticeby dcarcoles176 views
- 1:47
timekeeping in the ancient world - jared diebelby honorBHfilms681 views
- 1:00
S.A.S. #3 Apparent Tilt Of The Earth (w/respect to the Sun) Equationby woodenshews2,771 views
- 0:29
Scientific Sundials 30 sec adby RonaldRinehart1,877 views
- 1:32
Washington Monument as a sundialby sjaffe1,240 views
- 0:19
SUN THREE - Sundial (Concept)by simonhusslein1,585 views
- 3:38
Sundialby kwasemodo873 views
- 0:57
Solstice 21 June 2011by sesotek149 views
- 0:41
Double Focusing Sundialby billgottesman1,060 views
- 0:23
Longwood Gardens - Know-it-all Shadow Tells Timeby TwoBube436 views
- 4:03
Deeskee - Sundials feat. Mikah9, Medusa, Existereoby dRty882,862 views
Two errors here.
1. The duration between equinoxes and solstices ( 4 cases ) are all not equal.
2. The shadow length for equinox is not half between solstices.
It's much easier to detemine the equinox by the day the sun rises in the east, or when shadows trace out an exact straight line.
teenflunkie 3 years ago