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A sundial is a device that measures time 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. The style is the time-telling edge of the gnomon, often a thin rod or a sharp, straight edge. 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.
It is common for inexpensive decorative sundials to have incorrect hour angles, and these cannot be adjusted to tell correct.
i just get this intruction from Wikipedia programmer "Brandon Harris"
Wiki User
∙ 12y ago
Wiki User
∙ 15y ago=Making a sundial is easy! And fun!==Materials:==1.12 Rocks/stones==2. playdough/the ground/dirt==3. a stick or pencil==Instructions:==1. make a spot outside and make sure the sun is shining down==2. place the 12 rocks in the best half circle you can==3. place playdough in center of sundial and put the stick inside the dough==and it should tell you the time caused by the shadow! 3 easy steps! now that you know how to make it, HAVE FUN!=
Wiki User
∙ 12y agoBy the shadows in things
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What does the angle of a sundial have to be in the UK at 51.34 latitude?
2
What is the different between clock and sun dial?
A sundial is a type of clock
Who carried a portable sundial?
A solider from england..( Frank Noodler ) 1956...
What was Isaac newton interested in when he was a young boy?
he made a water clock and a windmill which could grind wheat and corn
What was gnomen stick used for?
The gnomon is the part of a sundial whose shadow ... cast on a numbered scale ... indicates the solar time.
What did George Washington use to tell the time?
He used a portable sundial.
Why is a sundial not a reliable way of telling the time?
You can't use a sundial in the night when its dark but you can tell the time using a sundial in daytime
HOW TO USE sundial?
a sundial is very simple to use mailny because it uses the suns rays however if it is night time the use of a sundial is no longer possible on the sundial it will have numbers on it and when the sun shines on it it will cast a particular shadow that shadow should line up with a number and then it will tell you the approximate time
Would your sundial read the same time as another sundial 100 miles directly north of you?
yes, as long as its on the same line of longitude you can use the same sundial
Who used the sundial or uses it still?
people still use sundial. they also use them in gardens as garden features for more info on sundials visit the site below it gives heaps of info!!! http://en.wikipedia.org/wiki/Sundial people still use sundial. they also use them in gardens as garden features for more info on sundials visit the site below it gives heaps of info!!! http://en.wikipedia.org/wiki/Sundial
Does a sundial work?
if u know how to use it
How do you find solar time?
You use a Sundial.
How can we use shadow to tell the time?
You can use a sundial, which is a device that uses the position of the sun's shadow to tell time. By placing a stick or pointer on the sundial, the shadow it casts can indicate the time based on markings on the sundial's face.
Does a meteorologist use a sundial?
No...we use clocks like the rest of the world.
What time device was use in the year 1440?
sundial
How do you use sundial in a sentence?
Well, for starters you just used sundial in a sentence. But another sentence could be... Sundials help you tell time.
What is a sentence with the word sundial in it?
I have a sundial in the garden.The sundial were the earliest form of clocks.
