21. Clocks...Teaching Time Escape into Time *The Franklin Institute Timepieces Collection* Empress Josephine Clock Escapements Fels clocks Foucault Pendulum Frick Electric Program Clock Seth Thomas Calendar Clock Sundials Synchronome Clock The Hands of Time *Activities* Frick http://sln.fi.edu/qa00/attic3

Escape into Time *The Franklin Institute Timepieces Collection* Empress Josephine Clock Escapements Fels Clocks Foucault Pendulum ... Synchronome Clock The Hands of Time *Activities* Frick Clock Student Activities Gear Interactive Activities Josephine Clock Student Activities Just in Time: Interactive Activities ... Synchronome Clock Student Activities Measuring Time *Lesson Plans* Frick Clock Teaching Resources Gear Lessons Josephine Clock Teaching Resources Just in Time: Lesson Plans ... Synchronome Clock Teaching Resources Elements of Time *Vocabulary and Book Lists* Children's Books about the Sun Frick Clock Glossary Science of Gears Vocabulary List Sundials Vocabulary List Tick-tock. Tick-tock. No matter where we are or what we do, time is constant. Every second, each minute, through all the hours of a day, week, month, or year, time moves on regardless of what is happening around us. Throughout history, people have sought out various ways to measure time. From the use of sundials, escapements, and pendulums to the invention of automatic, synchronome, and calendar clocks, the mechanics of timekeeping has been an important part of all cultures throughout the centuries. The Online Museum Educators worked with The Franklin Institute's collection of historic timepieces and developed educational resources related to them. The stories of those timepieces and their intricate workings will be examined here, and activities and resources that complement the clocks provide interactive fun and understanding. It's Time to begin your exploration...

22. A Revolution In Timekeeping cases. These advances in design were precursors to truly accurate timekeeping.Accurate Mechanical clocks. In Quartz clocks. The performance http://physics.nist.gov/GenInt/Time/revol.html

Ancient Calendars Early Clocks A Revolution in Timekeeping The "Atomic" Age World Time Scales and Time Zones NIST Time Services Bibliography A Revolution in Timekeeping I n Europe during most of the Middle Ages (roughly 500 CE to 1500 CE), technological advancement virtually ceased. Sundial styles evolved, but didn't move far from ancient Egyptian principles. During these times, simple sundials placed above doorways were used to identify midday and four "tides" (important times or periods) of the sunlit day. By the 10th century, several types of pocket sundials were used. One English model even compensated for seasonal changes of the Sun's altitude. Then, in the first half of the 14th century, large mechanical clocks began to appear in the towers of several large Italian cities. We have no evidence or record of the working models preceding these public clocks, which were weight-driven and regulated by a verge-and-foliot escapement. Variations of the verge-and-foliot mechanism reigned for more than 300 years, but all had the same basic problem: the period of oscillation of the escapement depended heavily on the amount of driving force and the amount of friction in the drive. Like water flow, the rate was difficult to regulate. Another advance was the invention of spring-powered clocks between 1500 and 1510 by Peter Henlein of Nuremberg. Replacing the heavy drive weights permitted smaller (and portable) clocks and watches. Although they ran slower as the mainspring unwound, they were popular among wealthy individuals due to their small size and the fact that they could be put on a shelf or table instead of hanging on the wall or being housed in tall cases. These advances in design were precursors to truly accurate timekeeping.

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Your Clock Shop Howard Miller Grandfather Clocks "Collections" Howard Miller Grandfather Clock "Collections" HOME Howard Miller Directory "Howard Miller" ... CONTACT US Need Help? Have Questions? Or Suggestions? EMAIL Us We'd love to hear from you We want this to be "YOUR" Clock Shop. "Marcross" from: Traditional Collection Golden Oak Finish on Select Hardwoods and Veneers. Cable-driven, triple chime Kieninger movement with chime silence option See Larger View for Complete Details Suggested Retail: $2,095.00 Your Clock Shop Price: $1,361.75 Shipping: $99 Call this number to check availability of this clock: TOLL FREE: 1-877-462-3228 SEE LARGER VIEW ORDER CLOCK HERE "Miles" from: Traditions Collections Windsor Cherry Finish on Select Hardwoods and Veneers. Cable-driven, triple chime Kieninger movement See Larger View for Complete Details Suggested Retail: $2,095.00 Your Clock Shop Price: $1,361.75 Shipping: $99 Call this number to check availability of this clock: TOLL FREE: 1-877-462-3228 SEE LARGER VIEW ORDER CLOCK HERE PRESIDENTIAL COLLECTION: Our Finest clocks featuring extensive hand-rubbed finishing, elaborately detailed dials, rare burls, the world's finest movements, fine turnings, delicate carvings, and more. "Kennedy" Limited Edition from: The Presidential Collection Finished in Oak Yorkshire H. 91" W. 36" D. 21"

25. Howstuffworks "How Pendulum Clocks Work" Main Science Engineering How Pendulum clocks Work. While clocks normallyare fairly complicated, they do not have to be confusing or mysterious. http://science.howstuffworks.com/clock.htm

ComputerStuff AutoStuff ElectronicsStuff ScienceStuff ... PeopleStuff Categories Earth Science Engineering Life Science Physical Science ... Gas Turbine Engines Sponsored By: Explore Stuff Big List of Articles Get the Newsletter Shop or Compare Prices Orbitz - Plan a Trip! ... Engineering How Pendulum Clocks Work by Marshall Brain Let's Start with the Weight! Experiment Gear Ratio ... Shop or Compare Prices Have you ever looked inside a grandfather clock or a small mechanical alarm clock , seen all the gears and springs and thought, "Wow that's complicated!"? While clocks normally are fairly complicated, they do not have to be confusing or mysterious. In fact, as you learn how a clock works, you can see how clock designers faced and solved a number of interesting problems to create accurate timekeeping devices. In this edition of HowStuffWorks , we'll help you understand what makes clocks tick, so the next time you look inside one you can make sense of what's happening! Pendulum clocks have been used to keep time since 1656, and they have not changed dramatically since then. Pendulum clocks were the first clocks made to have any sort of accuracy. When you look at a pendulum clock from the outside, you notice several different parts that are important to the mechanism of all pendulum clocks: There is the face of the clock, with its hour and minute hand (and sometimes even a "moon phase" dial!).

26. Today Date And Time Information on all things relating to calendars, dates, holidays, and time. Find today's date on several different cultural and religious calendars. Includes section on Celestial data, countdown clocks, and information on the dates past events. http://www.ecben.net/calendar.shtml

Today's Calendar and Clock Page This page has received the Top 5% of the Web designation from the Point Survey. See their review here. Named Cosmic Site of the Night for 5/9/96. Named June Site of the Month in the Reference category by The Net magazine, June 1996. Dr. Webster's Cool Site for 5/20/96. Listed in the Awesome Universal Web 500 Two Bones from Cyberhound This page has been accessed times. EST is 3:46 PM This is the 94th day of the year week ISO reckoning week common reckoning Day of Hour of Nissan 3, 5763 Istiqlal, 15 Baha Mar 22 2003 Old Style Year of the Water Ram Month of the Water Ox Day of the Fire Ram Hour of the Earth Monkey 12147th day of the 0th month Year 228 of American independence 52nd year of H.M. Elizabeth II, Queen of Canada A.U.C. MMDCCLV 2nd year of the 695th Olympiad Caitra 14, Saka Era 1925 (India) Era of Alexandria 7495 (Coptic) Ethiopian Year 1995 Buddhist Year 2546 Kouki 2663 (Japan) Heisei (Japan) Anno Lucis Anno Inventionis Anno Benefacio Anno Depositionis ... Post Scriptum Ulysses Prickle-Prickle, Discord 21, 3169 Discordian Calendar Jusanotoron year CUN Julian Day exact Julian Day (Greenwich) Modified Julian Day Dublin Julian Day 37714 Truncated Julian Day Or perhaps Truncated Julian Day 2733 Lilian Day Besselian Epoch Julian Epoch Norad Daycode 03094.8654

27. The CGI Resource Index: Programs And Scripts: Perl: Clocks Display the current time on your web page in an image or textbased format. Programs and Scripts C and C++ clocks (3). Remotely Hosted clocks (5) http://cgi.resourceindex.com/Programs_and_Scripts/Perl/Clocks

ADD RESOURCE SEARCH WHAT'S NEW USER REGISTRATION ... Web Hosting Find your solution with ResourceIndex: Ecommerce Hosting Windows Hosting Unix Hosting Budget Hosting Special Features PHP Resource Index Over 1,000 PHP related resources! Sponsor Links SmarterLinux.com Hosting 24x7x365 PHONE SUPPORT, FREE SETUP! FREE DOMAIN! $7.95/mo 500 MB Hosting! 30 GB TRANSFER + FREE SETUP + 2 MONTHS FREE Only $7.77/mo!! iPowerWeb Hosting $7.95/mo 300 Pop Emails Free Domain!!! Programs and Scripts: Perl: Clocks Related Categories: Programs and Scripts: C and C++: Clocks Remotely Hosted: ... Clocks Resources in this Category (24): DateTime (43 votes) Version: 1.1 - Released: 04/26/02 - Free Jump to URL This script will display the time based on your server. You can change the time according to your timezone. Requires SSI. Timeit Comments (4) (280 votes) Version: 1.2 - Released: 09/12/99 - Free - Unix Jump to URL This handy little script will place the date/time on your page in any format you choose. Easy to configure and set up. Allows you to choose, formats, font [ Day and Week Rate It!

28. Exterior Clocks,turrets, Public Clocks Windvanes And More From Shire Clocks Produce craftsman build clocks and clock mechanisms. Typical applications include church , public and street locations. Includes an overview of products and services. http://www.shireclocks.co.uk/

Based near Derby, in the heart of England, we are a family business supplying both trade and public with high quality clocks in a wide range of sizes, colours and decorative finishes. Our range of products includes various windvanes, GRP turrets and pillar clocks. All electrical mechanisms are made in our own workshops for use on clocks from 18 inch to 10 feet in diameter. Time adjustment is carried out by various methods including RADIO CONTROL using the RUGBY atomic time signal. See some of our products Mechanical Clock Servicing BEST SELLER Budget priced clocks Windvanes Refurbished Exterior Clocks Clock Descriptions ... top of this page Coloured brochure available To contact us telephone or fax (UK) 01335 372092 and ask for Peter Twigg. or click here to email us Shire Clocks, Shire House, 8 Gleneagles Close, Mickleover, Derby DE3 9YB UK web site designed by WebD-Sign

29. A Brief History Of Clocks From Thales To Ptolemy A Brief History of clocks From Thales to Ptolemy. By Jesse Weissman These earlyclocks were used when equal measurements of time needed to be established. http://www.perseus.tufts.edu/GreekScience/Students/Jesse/CLOCK1A.html

Please note: These papers were prepared for the Greek Science course taught at Tufts University by Prof. Gregory Crane in the spring of 1995. The Perseus Project does not and has not edited these student papers. We assume no responsibility over the content of these papers: we present them as is as a part of the course, not as documents in the Perseus Digital Library . We do not have contact information for the authors. Please keep that in mind while reading these papers. A Brief History of Clocks: From Thales to Ptolemy By: Jesse Weissman Look at the comments on this paper. The earliest example, in western culture, of a celestial sphere is attributed to the presocratic philosopher Thales. Unfortunately, little is known about Thales' sphere beyond Cicero's description in the De re publica For Gallus told us that the other kind of celestial globe, which was solid and contained no hollow space, was a very early invention, the first one of that kind having been constructed by Thales of Mileus, and later marked by Eudoxus with the constellations and stars which are fixed in the sky. (Price 56) This description is helpful for understanding the basic form of Thales' sphere, and for pinpointing its creation at a specific point in time. However, it is clearly a simplification of events that occurred several hundred years before Cicero's lifetime. Why would Thales' create a spherical representation of the heavens and neglect to indicate the stars? Of what use is a bowling ball for locating celestial bodies? Considering Eudoxus' preoccupation with systems of concentric spheres, a more logical explanation is that Thales marked his sphere with stars, and Eudoxus later traced the ecliptic and the paths of the planets on the exterior. The celestial sphere in question probably resembled this

30. Miller's Time - Antique Clocks Of Distinction Dealer offers a variety of antique clocks. http://www.millerstime.com/

Miller's Time is a project of NetOffices.com For more information, please visit our web site. Please direct all web site feedback to our WebMaster

31. Countdown Clocks Purveyors of clocks that countdown to milestones and important events. Offered in a variety of styles.Category Shopping Home and Garden Accessories clocks Contemporary......Personal countdown clocks from Countdown clocks International count down the days,hours, minutes and seconds to life's milestones and other very special dates http://www.countdownclocks.com/

Christmas Time Countdown Clock It's almost here and this great gift for the whole family is on sale saving you $10.00 - use it every year through 2049! $14.95

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handcrafted limestone, marble and slate patio and garden clocks and thermometers for outdoor settings. Square Point Broken Edge Round ... Round elcome to Saddlerock, established in 1997. We began collecting polished and natural stone pieces from around the world, starting with our polished marble clocks. Today, we offer a unique selection of one-of-a-kind, handcrafted limestone, marble and slate clocks and thermometers for indoor and outdoor settings. We proudly build all our clocks and thermometers in our studio located in San Luis Obispo, California. Our clocks and thermometers are individually handmade and arrive completely assembled. We invite you to add a delightful touch to your indoor, patio, pool or home and garden setting with our indoor and outdoor clocks and thermometers.

33. CESIUM ATOMIC CLOCKS Kinds of Cesium clocks. Some cesium clocks are transported to remote locationsin order to synchronize other clocks. USNO Cesium clocks. http://tycho.usno.navy.mil/cesium.html

34. Index Of /~pdp Information on what to look for in an antique clock and clock art. Also offers a variety of clocks for sale. http://www.pond.com/~pdp/

Index of /~pdp Name Last modified Size Description ... Parent Directory 31-Mar-2003 14:40 - Apache/1.3.22 Server at www.pond.com Port 80

35. USNO Master Clock Time USNO Master Clock Animated GIF clocks. These GIF animations use server pushto send the time out in synchronization with the USNO Master Clock. http://tycho.usno.navy.mil/what1.html

36. Maris Taylor Functional Art Clocks & Switchplates Contemporary interior and personal accessories including clocks, candle holders, fountains, vases, letter openers, and card cases. http://www.maristaylor.com

'Distinctive, affordable, customized, hand-crafted contemporary interior accessories' is not only difficult to say, but very difficult to find in this machine made, high tech world of ours. Maris Taylor Design offers an oasis of simplicity and elegance. Principal designer and artist, Scott Gruber, creates a wide spectrum of functional art objects including clocks, candleholders, light switch covers, knobs, pillboxes, and business card cases. The ancient art of fusing glass onto copper (known as copper enameling), natural stone and brushed metals are the three primary elements of Mr. Gruber's work. He is inspired and influenced as much by architectural forms as by earth forms. His ability to bring together diverse, some would even say wildly unrelated, materials and styles must be what creates the contemporary yet timeless quality of the Maris Taylor Design line. Maris Taylor Phone: Fax: Email: Info@MarisTaylor.com Web Design By www.ThorLoki.com

37. Allied Time: Electronic Time Clocks, Computerized Time Clocks, Time-date-numberi Offers quantity prices on computerized time clocks payroll recorders for small businesses. http://www.alliedtime.com/

Distributors of Employee time clocks and time recording systems Phone(386)409-7026 Fax(386)409-7027 E-mail: sales@alliedtime.com SITE INDEX Registered Users Login to Reorder Product Categories PC-Based Systems Time-Computing Timeclocks Automatic-Spacing Timeclocks Basic Electronic Timeclocks ... Cards - Racks - Ribbons Policies Warranties/Returns TimeSource from Icon MORE FEATURES - LESS COST! List: $924.00 Sale: ORDER NOW! Special Offer Expires April 6th! More Time Clock Specials Click Here! Call us Today! We Offer... Lowest Prices Everyday! Secure 24-hr Online Shopping Same Day Shipping Professional Systems Support 1-Year Product Warranty

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From Angels to Zebras We have the mousepad you want No frills No animated gifs No fancy stuff... Just great mousepads and other nifty gift items at great prices! Buy 5 mousepads, get the 6th one free! About MSPads Mousepads Clocks Beverage Insulators ... flags,buttons,keychains

39. Clocks...Teaching Time From the use of sundials, escapements, and pendulums to the invention of automatic,synchronome, and calendar clocks, the mechanics of timekeeping has been an http://www.fi.edu/qa00/attic3/

Escape into Time *The Franklin Institute Timepieces Collection* Empress Josephine Clock Escapements Fels Clocks Foucault Pendulum ... Synchronome Clock The Hands of Time *Activities* Frick Clock Student Activities Gear Interactive Activities Josephine Clock Student Activities Just in Time: Interactive Activities ... Synchronome Clock Student Activities Measuring Time *Lesson Plans* Frick Clock Teaching Resources Gear Lessons Josephine Clock Teaching Resources Just in Time: Lesson Plans ... Synchronome Clock Teaching Resources Elements of Time *Vocabulary and Book Lists* Children's Books about the Sun Frick Clock Glossary Science of Gears Vocabulary List Sundials Vocabulary List Tick-tock. Tick-tock. No matter where we are or what we do, time is constant. Every second, each minute, through all the hours of a day, week, month, or year, time moves on regardless of what is happening around us. Throughout history, people have sought out various ways to measure time. From the use of sundials, escapements, and pendulums to the invention of automatic, synchronome, and calendar clocks, the mechanics of timekeeping has been an important part of all cultures throughout the centuries. The Online Museum Educators worked with The Franklin Institute's collection of historic timepieces and developed educational resources related to them. The stories of those timepieces and their intricate workings will be examined here, and activities and resources that complement the clocks provide interactive fun and understanding. It's Time to begin your exploration...

40. Scientific American: Computers Without Clocks August 2002 issue Computers without clocks Asynchronous chips improve computer performanceby letting each circuit run as fast as it can By Ivan E. Sutherland http://www.sciam.com/article.cfm?articleID=00013F47-37CF-1D2A-97CA809EC588EEDF

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