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You need direct sunlight to use a sundial, so it cannot be used at night or when clouds or pollution are diffusing the sunlight too much to create shadows.

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11y ago

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Related Questions

What is a sundial and who was the first person to make it?

a sundial is a device that was used to tell time a long time ago. here is a vid that will tell you all about them: http://www.youtube.com/watch?v=tI0GqYJha1Q


How can you tell time with a sundial on a cloudy day?

Unfortunately, a sundial relies on the position of the sun's shadow to tell time, so it isn't possible to accurately tell time using a sundial on a cloudy day when the sun is obscured.


What did George Washington use to tell the time?

He used a portable sundial.


Can a sundial tell time?

Yes, sundials can tell time. That is what they are designed to do.


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.


Who was the sundial invented for?

to tell the time years ago.....


How were shadows used in the past to tell the time?

A sundial


How do you tell your teacher what time it is?

Using your penis as a sundial


Why was the first sundial invented?

It was invented by priests to honor their gods


How can you tell time on a sundial when it's rainy?

You cannot accurately tell time on a sundial when it is rainy because the sun's rays are blocked by the clouds or rain. The shadow that the sundial casts is crucial for telling time, so without the sun, it's not possible to do so.


How did the Aztecs tell the date?

Because, they used a sundial to tell date and time.


Which is faster a sundial or wristwatch?

The both tell the same time!