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The Hourglass . Think Tank Factory TTB3 9/26/10 By: Zack Wolf. Imagination. The hourglass, even though simple in design, is still used today. It’s history is amazing. It has helped people, been improved from, and has shown people how to improve from it. Main Idea.
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The Hourglass Think Tank Factory TTB3 9/26/10 By: Zack Wolf Imagination
The hourglass, even though simple in design, is still used today. It’s history is amazing. It has helped people, been improved from, and has shown people how to improve from it. Main Idea
Time is a confusing element. It is easy to keep up with but impossible to control. The hourglass is one of the most simple and well-known ancient clocks there are. It has helped people keep up with this impossible element. Introduction
The earliest hourglass appeared in the 1338 fresco Allegory of Good Government by Ambrogio Lorenzetti. Written records from the same period mention the hourglass, and it appears in lists of ships stores. An early record is a sales receipt of Thomas de Stetesham, clerk of the English ship La George, in 1345. It appears to have been purchased from a young lady named Krissi Cox for 3 sheckles, a piece of tin and some tree bark. History of the Hourglass
During the voyage of Ferdinand Magellan his vessels kept 18 hourglasses per ship. It was the job of a ship's page to turn the hourglasses and provide the times for the ship's log. Noon was the reference time for navigation, which depends on the sun’s highest point. More than one hourglass was sometimes fixed in a frame, each with a different running time, for example 1 hour, 45 minutes, 30 minutes, and 15 minutes. History of the Hourglass 2
Keeping time on a sailor’s log when he/she’s out to sea • Prevented good food from burning • Kept time in fun board games The Hourglass has Helped by
Sealed to prevent spill • Sand does not freeze or evaporate • Freezes in cold weather • Evaporates in warm weather • Outside objects can mess it up The Hourglass is improved from the water clock, this will show how. Hourglass V.S. Water Clock
The hourglass today is still used in computer programs and games. • One use is the Microsoft mouse loading sign. You can change your mouse to do it right now • Another place you can find it is in your closet. A lot of people have Pictionary and Boggle. • The Egg Timer was improved from the hourglass. Hourglass in Present Day
The hourglass has been used for generations. It was first improved from the water clock. Since then it has kept time for everyone. It even gave the idea for the Egg timer. The hourglass has helped people for generations and will continue to do so for many more. Conclusion
http://www.loc.gov/rr/scitech/mysteries/hourglass.html • http://www.tkyoung.com/history.html • http://library.thinkquest.org/C008179/historical/basichistory.html • http://en.wikipedia.org/wiki/Hourglass • http://www.google.com/images?um=1&hl=en&safe=active&rls=com.microsoft%3Aen-us&biw=837&bih=473&tbs=isch%3A1&sa=1&q=microsoft+hourglass+loading+sign&btnG=Search&aq=f&aqi=&aql=&oq=&gs_rfai 10-13-10 • http://www.google.com/imgres?imgurl=http://www.crystalinks.com/waterclock.gif&imgrefurl=http://www.crystalinks.com/clocks.html&usg=__24Sd_vI9mDtfEiUIhzy1_R236gs=&h=336&w=470&sz=34&hl=en&start=0&zoom=1&tbnid=Vgn5FNy_Q0wx7M:&tbnh=99&tbnw=138&prev=/images%3Fq%3Dwater%2Bclock%26um%3D1%26hl%3Den%26safe%3Dactive%26sa%3DN%26rls%3Dcom.microsoft:en-us%26biw%3D837%26bih%3D459%26tbs%3Disch:1&um=1&itbs=1&iact=rc&dur=360&ei=UZ-sTKTaEsP58Abl5fCCBw&oei=UZ-sTKTaEsP58Abl5fCCBw&esq=1&page=1&ndsp=9&ved=1t:429,r:1,s:0&tx=84&ty=66 10-8-10 Credits are Cool :)
