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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"

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12y ago
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6mo ago

To use a sundial, position it so that the gnomon (the part that casts a shadow) points towards true north. Then, observe the shadow that the gnomon casts on the dial to determine the time. The orientation and design of the dial will determine how to read the time accurately.

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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!=

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12y ago

By the shadows in things

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Q: How do you use a sundial?
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Related questions

What did George Washington use to tell the time?

He used a portable sundial.


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


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 sundial work?

if u know how to use it


How do you find solar time?

You use a Sundial.


What are the Dimensions of a Sundial?

The dimensions of a sundial would typically include the size of the dial face, the length of the gnomon (the object that casts the shadow), and the overall height and width of the sundial structure. The dimensions vary depending on the design of the sundial and its intended use.


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.


HOW TO USE sundial?

To use a sundial, place it on a flat surface with the gnomon (the piece that creates the shadow) pointing towards the North Pole. The gnomon will cast a shadow that moves as the sun changes position throughout the day, indicating the time based on where the shadow falls on the sundial's markings. Remember to adjust for daylight saving time and your location's longitude to get an accurate reading.


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.


Why did the Egyptians use a water clock instead of a sundial?

becuase its cooler