Sundials:
What is a Sundial?•       A Sundial is a common    instrument used to tell the time.       As you can see in the name the ...
How does a Sundial      Work?• A Sundial works by a gnomon which is an essence on any  form of stick. The gnomon casts the...
How does aSundial Work?
Who uses Sundials?Sundials are used all over the world,therefore the first evidence of a Sundialexisting was in the Roman, ...
Summary• A Sundial is a common instrument used to tell the    time. A Sundial works by a gnomon which is an   essence on a...
Dom says Thanks!!!
Laura says Thanks
For Watching     Bye
Summary:
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Laura and Dom Sundial Presentaion

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  • Laura and Dom Sundial Presentaion

    1. 1. Sundials:
    2. 2. What is a Sundial?• A Sundial is a common instrument used to tell the time.   As you can see in the name the instrument uses the sun. They show the time by a shadow of a pointer casted by the sun onto a flat surface indicating the hours of the day on it.
    3. 3. How does a Sundial Work?• A Sundial works by a gnomon which is an essence on any form of stick. The gnomon casts the shadow and determines the solar time at that moment.• As you can see by the name, a sundial is a instrument that measures the time using the sun. As the sun moves across the sky so does the gnomon, it moves towards the different hours at the speed of the sun. Every design of a Sundial relies on the gnomon, without the gnomon the sundial won’t be able to progressively move from hour to hour.
    4. 4. How does aSundial Work?
    5. 5. Who uses Sundials?Sundials are used all over the world,therefore the first evidence of a Sundialexisting was in the Roman, Greek,Babylonian and Egyptiancivilisations . They were known to be themost accurate time readers in thosehotter areas of the world, so peopletended to use them more that otherclocks. The oldest sundial wasapparently developed in Greece inaround 340BC, so the Sundial was madeand used by a lot of people in that timeframe.
    6. 6. Summary• A Sundial is a common instrument used to tell the time. A Sundial works by a gnomon which is an essence on any form of stick. The gnomon casts the shadow and determines the solar time at that moment. They are found all over the world.
    7. 7. Dom says Thanks!!!
    8. 8. Laura says Thanks
    9. 9. For Watching Bye
    10. 10. Summary:

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