41. Mystical-WWW : Clocks And History A brief history of clocks . CLOCK GRID . moon. Time is, time was, time s past. Byron, Don Juan. Back 2 CLOCK GRID. clocks. At best http://www.mystical-www.co.uk/time/clocks.htm

"A brief history of clocks" 'CLOCK GRID' Ancient Calendars Clocks Sun Clocks Water Clocks ... BACK 2 MYSTICAL TIME GRID Our thanks to National Institute of Standards and Technology for the information http://physics.nist.gov/time This page was brought to you by Mystical World Wide Web "http://www.mystical-www.co.uk" Ancient Calendars Historically we have been able to gather only a little knowledge about the methods of time keeping in prehistoric eras, but we do know that in practically every culture just as today, people have been preoccupied with measuring and recording the passage of time. The celestial bodies of the Sun, Moon, Planets and Stars, have allowed ancient civilisations to create systems to provide a measuring of seasons, months, and years. In Europe we have discovered archaeological finds which indicate that over 20,000 years ago scratched lines on sticks and bones, or carefully gouged holes were used as ancient calendars, believed by academics to demonstrate ways of indicating the days between phases of the moon, 'lunar cycles'. Around five thousand years ago, the ancient Sumerians, in the Tigris-Euphrates valley (now in Iraq), had a highly developed system : each year was divided into months;

42. Trophy Shop- Trophies, Plaques, Medals, Acrylic Awards Plaques, acrylics, awards, signs and clocks, medals and ribbons, and dye sublimated products. http://www.trophyshopinc.com

Trophies Plaques Acrylic Awards Dye Sublimated ... E-mail 129 E. Springbrook Drive Johnson City, Tennessee Call for a custom quote! All prices include FREE engraving! Trophies View our great selection of trophies with even greater prices. Plaques We have a wide variety of plaques for you to choose from. Made with high quality wood, these are great for recognizing special achievements. Acrylic Awards These laser engraved acrylic awards are excellent for all occasions. From achievement awards to engraved family pictures, these make a great choice for any occasion. Signs Need a sign for the gym or the school hallway? We can provide you with watever you need form large signs to custom nameplates for your desk or office door. Our medals and ribbons are an excellent choice for fairs, pageants and track and field events. Be sure to check out our wide selection of medals available in most sports.

43. Clear Sky Clock Homepage Feel free to copy me. Are there clocks for other locations? Yes, hundreds. I can generate clocks for almost anywhere in Canada and US. See the coverage map. http://cleardarksky.com/csk/

Clear Sky Clock Top Sponsors Southern Preservation Systems Michael Fulbright All Sponsors Be a Sponsor ... News (June 7) Meet the Perps Coverage Map Your own clock Silly Files (Aug 26) Boring Admin Stuff Privacy Advertising Credits How to Help ... Contacts Related Sites Astronomical Seeing Observations NEW Clear Sky Alarm Clock Astronomy Weather email list WOW Favorite Link Award The Clear Sky Clock Home page What is it? It's an attempt to show at a glance when, in the next 48 hours, we might expect clear and dark skies for one of many observing sites, in this case Jordan Lake, North Carolina. It's is specifically intended for amateur astronomers. The forecast data comes from a numerical weather model run by those very cool guys at the Canadian Meteorological Centre Read from left to right. Locate a column of blue blocks. That's when the sky will likely to be clear and dark. A more detailed explanation is here , which also links CMC's original forecast maps. If you find this image, or the underlying forecast maps, useful please email Allan Rahill . He needs to show his bosses at CMC that his astronomy forecasts are actually being used. Feel free to copy me Are there Clocks for other locations?

44. Atomic Clock Time Displayed in a variety of useful formats. Site is a frontend to U.S. government atomic clocks. http://www.atomictime.net/

45. JRwoods2 Personalized Wood Crafts ! Monogramed wood crafts including key chains, desk sets, wood clocks, crayon holders and wooden wheels. http://members.aol.com/Jrwoods2/index.html

CUSTOM MADE -=* KEY CHAINS, CRAYON HOLDERS, DESK SETS, NAMES ON WHEELS, PUZZLE NAMES AND CD WOOD CLOCK NAMES *=- Your Name in Solid Wood Personalized solid wood keychains, made-to-order with your name, nickname, initials, phrase, etc. The keychains are currently available in solid oak, with up to ( 8 ) eight letters. Available with letters of the alphabet, and are finished with non-toxic clear acrylic. They make great gifts for anyone. P.O. BOX 37-0885 Miami, FL 33137 KEY CHAINS CRAYON HOLDERS DESK SETS NAMES ON WHEELS ... LINKS

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

Cesium Atoms at Work "...till like a clock worn out with eating time." John Dryden (1631-1701) The 1955 Cesium Atomic Clock at the National Physical Laboratory, UK. It kept time to a second in 300 years. A "cesium(-beam) atomic clock" (or "cesium-beam frequency standard") is a device that uses as a reference the exact frequency of the microwave spectral line emitted by atoms of the metallic element cesium, in particular its isotope of atomic weight 133 ("Cs-133"). The integral of frequency is time, so this frequency, 9,192,631,770 hertz (Hz = cycles/second), provides the fundamental unit of time, which may thus be measured by cesium clocks. Today, cesium clocks measure frequency with an accuracy of from 2 to 3 parts in 10 to the 14th, i.e. 0.00000000000002 Hz; this corresponds to a time measurement accuracy of 2 nanoseconds per day or one second in 1,400,000 years. It is the most accurate realization of a unit that mankind has yet achieved. A cesium clock operates by exposing cesium atoms to microwaves until they vibrate at one of their resonant frequencies and then counting the corresponding cycles as a measure of time. The frequency involved is that of the energy absorbed from the incident photons when they excite the outermost electron in a cesium atom to jump ("transition") from a lower to a higher orbit. According to quantum theory, atoms can only exist in certain discrete ("quantized") energy states depending on what orbits about their nuclei are occupied by their electrons. Different transitions are possible; those in question refer to a change in the electron and nuclear spin ("hyperfine") energy level of the lowest set of orbits called the "ground state." Cesium is the best choice of atom for such a measurement because all of its 55 electrons but the outermost are confined to orbits in stable shells of electromagnetic force. Thus, the outermost electron is not disturbed much by the others. The cesium atoms are kept in a very good vacuum of about 10 trillionths of an atmosphere so that the cesium atoms are little affected by other particles. All this means that they radiate in a narrow spectral line whose wavelength or frequency can be accurately determined.

47. Time Clocks Australia - Time Clocks, Bundy Clocks, Time Cards, Ribbons, Batterie Offers time clocks, time cards, accessories, and spare parts. Stocks all major brands. Australia only. http://www.timeclocks.com.au/

time clocks time cards , and accessories . We stock all the major brands and can deliver to any location within Australia. TimeClocks.com.au - Your one stop time clock shop. Kings Power KP-100D The Kings Power KP-100D time recorder incorporates the necessary features to meet and exceed the needs of virtually any office or industrial environment. All you have to do is insert your time card. Simple and easy operation for your everyday use. more details... New product for 2004 time clocks electronic/pc based self calculating time recorders ... more... Price: (inc GST) Home home time clocks time cards accessories by department time clocks time cards accessories brands site security SSL Encrypted Security home trolley delivery returns ... FAQ home time clocks time cards accessories Tuesday, 8 June 2004 2:45pm Search for: assistance trolley Please enable Javascript view trolley

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

USNO Master Clock Animated GIF Clocks These GIF animations use server push to send the time out in synchronization with the USNO Master Clock. They require a web browser that fully implements this technique. Please note that the time displays available from this page will not work for all browsers. The most accurate way to use the internet to get USNO time is via NTP. CLICK ONCE OR TWICE on the timezone to see the clock Universal Time Gif Clock Atlantic Standard/Daylight-Saving Time Clock Eastern Standard/Daylight-Saving Time Clock Central Standard/Daylight-Saving Time Clock ... Return to Time Service Home Page

49. Electric Time Company, Inc. Of Medfield, MA, USA Manufacturer of tower clocks, street clocks, large clock movements and post clocks. Standard and custom monumental clock design available. Product specifications, sounds and catalog available. http://www.electrictime.com/

Electric Time Company of Medfield, Massachusetts USA manufa ctures quality custom made clocks. For over 70 years, Electric Time has been a master in the art of handcrafted clock manufacture and design. Our choices of indoor and outdoor styles range from silhouette clocks and tower clocks to post clocks, street clocks and wall clocks. We combine technology and craftsmanship to produce a product of unequalled quality For catalogs and sales information, contact salesi@electrictime.com or use the forms in our Contact section of this web site Phone Fax Email salesi@electrictime.com [HOME] [PRODUCTS] [INSTALLATIONS] [ONLINE-CATALOG] [EMPLOYMENT] ... [MULTIMEDIA]

50. The Clock Quiz What Time Is It? Mr. Soloff and Ms. Diaz s Second Grade Class at Trevor Day School created these clocks. View their masterpieces and test your knowledge. http://www.trevor.org/clocks/

What Time Is It? Mr. Soloff and Ms. Diaz's Second Grade Class at Trevor Day School created these clocks. View their masterpieces and test your knowledge. Take a tour through our creative clock designs while testing your abilities to tell time! Take the New Clocks Quiz Alexandra's Chocolate Shake Clock Finian's Harry Potter Quiddich Clock Laura's Coral Reef Clock Elizabeth's Gymnastic Clock ... Mr. Soloff's Guitar Clock Back Back to the Trevor Home Page

51. Bob Gardner Antique Clocks, Clock Specialist And Writer Selling French And Engli English and French antique clocks including skeleton clocks, carriage clocks, antique bracket clocks, tall case clocks,and dial clocks. No online ordering. http://www.bgantiqueclocks.com/

Phone Bob Gardner Antique Clocks on +44 7774 120692 or e-mail This Web site was last updated on 28 May 2004 17:45 Bob Gardner Antique Clocks specialises in high quality antique clocks. We currently have antique bracket clocks for sale dating from 1690 to 1880. We specialise in small antique skeleton clocks from the first half of the nineteenth century, and we always have antique longcase clocks (grandfather, and tallcase clocks) for sale. We also sell French mantel clocks, French carriage clocks, antique wall clocks and dial clo cks, marine chronometers and music boxes. As well as antique clocks we sell Atmos clocks and are agents for the world-class new clocks made by Sinclair Harding We specialise in Royal Air Force (RAF) clocks under the name Aeroclocks We ship worldwide. Please note that we no longer list prices in US Dollars due to its fluctuating value. You can now pay for any item using your credit card. Once you have decided to buy an item from us, usually after discussing the item with us and after we have sent you a detailed description, just click on the credit card icon above and pay through PayPal. We are members of LAPADA and CINOA.

52. Score-Clocks Inc. Rent and sell portable, multiside sports and wrestling specific scoreboards. http://www.score-clocks.com/

For special offers, news and other info, sign up for our E-Newsletter. First Name: Last Name: Email Address: Click here to get our latest catalog Welcome to Score-Clocks.com, THE #1 source for high quality, timing and scoring products! We strive to develop and manufacture the highest quality products possible for our customers. Quality - Simplicity - Reliability

53. Alarm Clocks - Alarm Clock Radio - Clock Radios Home Alarm clocks Alarm Clock Radios CD Alarm Clock Radios Alarm Clock Phones Shopping Cart Site Map Contact Us Privacy Policy About Us Links http://www.thealarmclockshop.com/

Triple alarm system lets you set three independent alarm times and wake sounds. More Detail Attractive, compact Low-Profile design with large, red LED display. More Detail Phone features include call waiting, handset and ringer volume control, and LCD screen. More Detail If you have any questions regarding one of our products, please don't hesitate to call our toll-free customer service number, listed below. Home Alarm Clocks Alarm Clock Radios CD Alarm Clock Radios ... Links

54. HC Mingham-Smith Ltd. Can find out what the right time is by accessing Internetbased Atomic clocks, using networked time-servers, GPS (The Global Positioning System), and by listening for time broadcasts over a LAN. http://www.kaska.demon.co.uk/

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55. Clocks In The Rocks clocks in the Rocks. The following radioactive decay processes have proven particularly useful in radioactive dating for geologic processes clocks in the Rocks. http://hyperphysics.phy-astr.gsu.edu/hbase/nuclear/clkroc.html

Clocks in the Rocks The following radioactive decay processes have proven particularly useful in radioactive dating for geologic processes: Parent Half-life (billion yrs.) Daughter Materials Dated Zircon, uraninite, pitchblende Muscovite, biotite, hornblende, volcanic rock, glauconite, K-feldspar Zircon, uraninite, pitchblende K-micas, K-feldspars, biotite, metamorphic rock, glauconite Note that uranium-238 and uranium-235 give rise to two of the natural radioactive series , but rubidium-87 and potassium-40 do not give rise to series. They each stop with a single daughter product which is stable. Index HyperPhysics Nuclear R Nave Go Back Uranium-Lead Dating Ages determined by radioactive decay are always subject to assumptions about original concentrations of the isotopes. The decay schemes which involve lead as a daughter element do offer a mechanism to test the assumptions. Common lead contains a mixture of four isotopes. Lead 204, which is not produced by radioactive decay provides a measure of what was "original" lead. It is observed that for most minerals, the proportions of the lead isotopes is very nearly constant, so the lead-204 can be used to project the original quantities of lead-206 and lead-207. The two uranium-lead dates obtained from U-235 and U-238 have different half-lives, so if the date obtained from the two decays are in agreement, this adds confidence to the date. They are not always the same, so some uncertainties arise in these processes.

56. Good Fortune Electronics (HK) Ltd. Manufacturer of alarm clocks including travelling and quartz alarms. http://www.alarm-clocks.com/

57. Lake Country Promotions -- Quality Promotional Marketing Products Offering a wide variety of products; apparel, pens, pencils, drinkware, watches, clocks, calendars, magnets, and signs. http://www.lakecountrypromo.com/

PUT YOUR BUSINESS IN FRONT OF CUSTOMERS Statistics Prove: Customers use Personalized Items Pens change hands 9 times! Name recognition promotes acceptance 68% of Business' have received Personalized Gifts 80% of Companies use Personalized Items to promote their company Promotional Products are a cost efficient way to promote your business! Celebrating Our 7th Year! New Customers are important to You! Promotional Products with YOUR BUSINESS NAME get noticed! Christmas Promo An Everyday "THANK YOU" Fulfillment Programs Business Gifts Calendar Advertising Employee Relations Statement Enclosures Traffic Building Co-op Programs Board of Directors Gifts Birthday Plan Anniversary Plan Children's Items John 3:16 June 07, 2004 Toll Free THOUSANDS of items to help promote your business! Apparel Pens Pencils Glassware Office Accessories Awards Trophies Jewelry Clocks Watches Calendars Sporting Goods Buttons Badges Labels Stickers Magnets Auto Accessories House wares Tools Toys Food Letterhead Envelopes Letter Openers Litter bags Magnetic signs Memo Pads Playing Cards Portfolios Rain Gauges Rulers T-Shirts Tape Measures Thermometers Yardsticks LAKE COUNTRY Promotions, LLC

58. Clocks clocks. Table Clock 18th century. Wall clock Fine example of Ottoman craftmanship of clock making 18th century. http://www.ee.bilkent.edu.tr/~history/clocks.html

Clocks Table Clock 18th century Wall clock Fine example of Ottoman craftmanship of clock making 18th century

59. WorldMate Standard And Professional Edition For Palm, Pocket PC, Symbian UIQ P80 A collection of Palm travel software for world travelers. Features World clocks, AutoDST, and currency and clothing size converters. $19.95 http://www.mobimate.com/worldmate

Palm Pocket PC Series 60 Home ... Games, Games! WorldMate When you're "roaming" the globe, make sure to have WorldMate from MobiMate on your Handheld! Choose your Platform: View the End User License Agreement. View the OEM End User License Agreement.

60. Www.usbooks.com Books on clocks, watches, watchmakers' tools and related topics. Includes book reviews and price guides. http://www.usbooks.com/

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