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.
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.
Yes, sundials can tell time. That is what they are designed to do.
A sundial
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.
A sundial.
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
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.
He used a portable sundial.
Yes, sundials can tell time. That is what they are designed to do.
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.
to tell the time years ago.....
A sundial
Using your penis as a sundial
It was invented by priests to honor their gods
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.
Because, they used a sundial to tell date and time.
The both tell the same time!