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Make Your Own Working Paper Clock by by James Smith Rudolph - Softcover 1983
US $11.99
ApproximatelyS$ 15.32
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US $5.77 (approx S$ 7.37) USPS Media MailTM.
Located in: Santa Ana, California, United States
Delivery:
Estimated between Sat, 20 Sep and Tue, 23 Sep to 94104
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30 days return. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
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Read item description or contact seller for details. See all detailsSee all details on coverage
(Not eligible for eBay purchase protection programmes)
Seller assumes all responsibility for this listing.
eBay item number:401441662699
Item specifics
- Seller Notes
- “See the item description.”
- Subject
- Reference - Hobbies
- Special Attributes
- Illustrated
- ISBN
- 9780060910662
About this product
Product Identifiers
Publisher
HarperCollins
ISBN-10
0060910666
ISBN-13
9780060910662
eBay Product ID (ePID)
19384
Product Key Features
Language
English
Topic
Clocks & Watches, Non-Classifiable, Antiques & Collectibles
Illustrator
Yes
Dimensions
Item Height
0.4 In.
Item Length
12.1 In.
Item Weight
13.3 Oz
Item Width
9.6 In.
Additional Product Features
Publication Year
2001
LCCN
83-047570
Format
Trade Paperback
Book Title
Make Your Own Working Paper Clock
Intended Audience
Trade
Synopsis
Clocksby Isaac AsimovThrough most of history, people hardly felt the need of clocks. It seemed sufficient to consult one's own physiology to tell when one was hungry or sleepy, or to observe the general position of the sun in the sky during the day or that of the Big Dipper at night.Those who were meticulous enough to want something better searched for some regular motion that existed in nature or that could be contrived. In ancient times, the sundial was invented so that the passage of the shadow of a rod could be followed as the sun crossed the sky.Or else one could observe the extent to which a candle burned downward, or wait till a certain amount of sand had sifted through a small opening. Such devices could be used on cloudy days or at night, when the sun could not be seen and shadows were not observed.In ancient times, the best timepiece was the clepsydra, or water clock, which measured time by the regular dripping of water through a narrow opening. As water accumulated in the lower reservoir, a float carrying a pointer rose and marked the hours. The best water clocks were quite elaborate but few in number and fragile. They could not be relied on to tell time more closely than a fairly large fraction of an hour.In medieval Europe, the mechanical clock was invented. Clever arrangements of gears and wheels were devised that could be made to turn by weights attached to them. As the weights were pulled downward by the force of gravity, the wheels were forced to turn in a slow, regular manner. A pointer, properly attached to the wheels, marked the hours.These mechanical clocks were less delicate than water clocks and required less maintenance. They became commonin churches and monasteries and could be relied on to tell when to toll the bells for regular prayers or church attendance. (The very word "clock" is from the French cloche, meaning "bell.")Eventually, mechanical clocks, Cut this book into 160 pieces, glue them together, and have a paper clock operated by weights that keeps perfect time and can be rewound and regulated.
Number of Pages
40 pages
Item description from the seller
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- n***a (1521)- Feedback left by buyer.Past monthVerified purchaseAwesome!! Can’t wait to read this one. Quick delivery. Pleasure to do business with you. Thanks so much.
- 3***d (487)- Feedback left by buyer.Past monthVerified purchaseGreat seller! Would recommend highly.
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