A sundial is a device that determines the time of day by the position of the Sun. In common designs such as the horizontal sundial, the sun casts a shadow from its style onto a surface marked with lines indicating the hours of the day. As the sun moves across the sky, the shadow-edge aligns with different hour-lines. All sundials must be aligned with the axis of the Earth's rotation to tell the correct time. In most designs, the style must point towards true celestial north (not the north magnetic pole or south magnetic pole). That is, the style's horizontal angle must equal the sundial's geographical latitude.
Some Archeological examples
From Beijing
A blog from the managers and editors of PhotoStock-Israel will cover various photography topics and events and the business side of photography
Sunday, March 11, 2012
Friday, March 9, 2012
A Happy Purim to All
Today is Purim. The celebration that includes getting dressed up (not only children) and just having fun.
Here are some images of the festivity around the Israel
It is customary to eat Hamantashen (Ozen Haman) filled with poppy seeds
Enjoy the Day
Purim Stock Photography - Images by photostock-israel .
Feel free to share this slide show on your own site
Here are some images of the festivity around the Israel
It is customary to eat Hamantashen (Ozen Haman) filled with poppy seeds
Enjoy the Day
Purim Stock Photography - Images by photostock-israel .
Feel free to share this slide show on your own site
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