Atomic Clock
April 8th, 2010 | 
Author: Atomic Clock
Atomic Clock deals on Amazon:
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Geneva 14-Inch Electric Quartz Wall Clock, Black $15.12 Accurate Quartz movementShatter-resistant lensPlastic black casing… |
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Melitta MEPT1B Perfect Time 12-Cup Coffeemaker $79.99 Equipped with a digital clock/timer tuned by a radio receiver to the U.S. atomic clock, this coffeemaker brews up to twelve 5-ounce cups of coffee and, because the clock/timer can be programmed up to 24 hours in advance, will begin the brewing process automatically for wake-up coffee. The clock is split-second accurate because it automatically adjusts, if necessary, to the atomic clock’s sign… |
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Homedics DWS-100 Envirostation Atomic Travel Alarm Clock with Indoor Thermometer $19.99 This compact travel alarm clock rouses sleepers gently plus features an indoor thermometer, an easy-to-read, two-line LCD screen that displays the month, date, day-of-week, temperature, and time of day down to the precise second. Users can monitor temperatures in either Celsius or Fahrenheit and may also view military time. A backlight provides illumination in darker environments. For slow risers,… |
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The Complete Decca Recordings (1937-1939) $29.17 Ellington’s band had more grace and sophistication, but no big band swung harder than the incomparable Basie band. Recorded between 1937 and 1939, these 63 classics feature a cornucopia of legendary musicians: Herschel Evans’ big-toned, earthy tenor balances Lester Young’s ethereal tenor. Harry “Sweets” Edison’s soaring blares complement Buck Clayton’s muted trumpet. Jimmy Rushing’s nasal, booming… |
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Atomic Clock $7.57 All products are BRAND NEW and factory sealed. Fast shipping and 100% Satisfaction Guaranteed…. |
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Atomic Clock [Explicit] $8.99 … |
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La Crosse Technology Weather Direct WD-3308U-WAL 4 Day Internet Powered Wireless Forecaster $30.99 THE ENEMY WIND is one of The Weather Channel’s most popular documentaries. It deals with tornadoes, their behavior and how they are generated. As it explores our historical relationship with tornadoes, THE ENEMY WIND discusses recent research into improving our ability to forecast storms and shows the work of a group of nerveless adventurers, the tornado chasers. This video explains how researcher… |
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GE 11088 Electroluminescent Battery-Powered Clock and Plug-In Night Light $7.00 This wall clock has a glowing face that make it easy to tell time in the dark. Battery powered, this clock is always on and keeps time when unplugged or during a power loss. Plugs into standard outlet…. |
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Leviton VPT24-1PZ Vizia 24-Hour Programmable Indoor Timer with Astronomical Clock $34.99 The Vizia + 24-Hour Programmable Indoor Timer with Astronomical Clock helps lower your electrical costs without sacrificing convenience. Replacing standard switches with timer switches can reduce energy consumption, improve security, and save you money. Allowing up to 50 timer event settings per day, this timer switch can be programmed weekdays, weekends, all days or any combination of days. It (V… |
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Intermatic ST01C White Self Adjusting Wall Switch Timer $33.54 0… |
Ebay listings for Atomic Clock products.
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FRAMED Rose In Atomic Tangerine Gallery Canvas Print 5 Panel Set Choice Of Clock $128.00 |
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FRAMED Rose In Atomic Tangerine Gallery Canvas Print 5 Panel Set Choice Of Clock $125.00 |
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Gustav Becker Grant Atomic Digital Wall Clock with Weather Station 2328 $153.99 |
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FRAMED Rose In Atomic Tangerine Gallery Canvas Print 5 Panel Set Choice Of Clock $98.00 |
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FRAMED Rose In Atomic Tangerine Gallery Canvas Print 5 Panel Set Choice Of Clock $93.00 |
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1 Case of BRG Mars Atomic Wall Clocks,24HR Dial – NIB $119.99 |
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1 Case of BRG Mars Atomic Wall Clocks,12HR Dial – NIB $119.99 |
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DIGITAL WEATHER WATCH ATOMIC ALARM CLOCK w/RADIO CONTROLLED OUTDOOR SYNC SENSORS $119.75 |
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SANGEAN RCR-3 Digital AM/FM Atomic Clock Radio $112.84 |
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Wood Atomic Analog Wall Clock Crosse Technology Quartz Home Office Business NEW $102.93 |
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18 INCH OUTDOOR ATOMIC WALL CLOCK NEW FREE US SHIP $99.99 |
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1 Case of BRG Venus Atomic Wall Clocks – NIB $99.99 |
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Chass “Digi Companion” Global Sync Atomic Clock with Digital Photo Frame 20300 $87.99 |
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SANGEAN Atomic RCR-3 AM/FM Clock Radio $94.04 |
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La Crosse Technology Wt-3161 Brushed Metal 16 Analog Atomic Clock $93.80 |
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JUMBO GIANT DIGITAL ATOMIC WALL CLOCK THERMOMETER $79.95 |
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La Crosse Technology WT-3181P 18″ Outdoor Atomic Wall Clock B0001PG2RO $92.56 |
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Projection Alarm Clock with Indoor/Outdoor Temperature Atomic Time Auto Adjust $84.95 |
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Atomic Metal 18-inch Clock with Temperature and Humidity $84.99 |
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Atomic Projection Clock $89.76 |
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Oregon Scientific RMR329PA Atomic Projection Clock with $89.63 |
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Oregon Scientific RMR329PA Atomic Projection Clock $89.48 |
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Wall Clock – Analog Atomic Wall Clock – by La Crosse Technology – WT-3181P $88.99 |
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Accurite Deluxe Weather Station with Atomic Clock ACCURITE00973 $85.80 |
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La Crosse Technology WT-3161BL 16 Inch Stainless Steel Atomic Clock B000FEUEPC $83.30 |
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La Crosse Technology WT-3126B 12-Inch Atomic Analog Wall Clock, Aluminum $82.91 |
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La Crosse Technology WT-3181PL 18” Atomic Outdoor Clock – Silver B0009J5O3K $82.45 |
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Bulova Altus Atomic Wood Mantel Clock. New in Box! $69.95 |
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Thermometer-Wireless Atomic Clock/Thermometer with Sensor $79.99 |
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NEW Sangean RCR-22 Atomic Clock Radio $79.95 |
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LA Crosse Technology WT-3181P-ATOMIC WALL CLOCK W THERM – Kit $79.84 |
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16″ Brushed Metal Atomic Wall Clock La Crosse $69.00 |
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Digi Companion Global Sync Atomic Clock With Digital Ph $78.00 |
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Deluxe Weather Station w/Atomic Clock $69.95 |
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La Crosse Technology WT-3181P 18″ Outdoor Atomic Wall Clock with Temperature/Hu $76.79 |
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La Crosse Technologies WT-3181PL-LC 18″ Atomic Outdoor Clock – Kit $76.52 |
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Atomic Wall Clock with Melodies & Date Display-0528 $76.00 |
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Gustav Becker Pocket Atomic Travel Alarm Clock with Leather Case 2327 $75.99 |
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La Crosse Technology 18″ Atomic Outdoor Clock NEW $75.99 |
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Indoor OutdoorWeather Resistant 18 Inch Metal Atomic Wall Clock and Thermometer $74.99 |
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Accurite Deluxe Weather Station With Atomic Clock $74.99 |
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La Crosse Technology 18″ Atomic Outdoor Clock — Fast Free Shipping! $74.99 |
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Atomic Wall Clock Analog Hygrometer Thermometer Outdoor Indoor w/ Mount Set NEW $74.97 |
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La Crosse Technology WT-3181PL 18″ Atomic Outdoor Clock $59.00 |
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Hygrometer & Thermometer Radio Controlled Time Atomic Clock Indoor Outdoor NEW $73.87 |
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La Crosse Technology WT-3181P 18″ Outdoor Atomic Wall Clock with Temperature/Hum $73.62 |
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LA Crosse Technology – WT-3181P Atomic Wall Clock with Therm $72.58 |
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La Crosse Technology WT-3161 Brushed Metal 16 Analog Atomic Clock B004NXZNOI $72.16 |
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18″ Pewter Analog Atomic Wall Clock with Thermometer and Hygrometer WT-3181P $71.99 |
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Gustav Becker Atomic Countdown Alarm Clock 2329 $71.99 |
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Honeywell PCR507W Public Alert Atomic Clock Radio NOAA $59.95 |
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T53094 SANGEAN RCR-22 SANGEAN RCR-2 AM/FM ATOMIC ALARM CLOCK $70.99 |
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Set of 2 LaCrosse Atomic Wall Clocks $55.00 |
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Vintage Retro 80’s CASIO Robot Alarm Clock Stomps Feet AC-100 Atomic Space Astro $69.99 |
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La Crosse Technology Wireless Cherry Weather Forecast Station & Atomic Clock $69.99 |
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Oregon Scientific EW96 Atomic Projection Clock with Thermometer NEW $69.99 |
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Sangean RCR-22 AM/FM Atomic Clock Radio $69.01 |
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La Crosse Technology WS-8119U-IT-W Atomic Digital Wall Clock w/ Temp – White $68.80 |
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La Crosse Atomic Clock Temperature & Weather Station $67.95 |
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La Crosse Technology 18″ Atomic Outdoor Clock $61.95 |
Atomic Clock – Keeping the World Ticking
When most people think of the digital age and its computers, satellites and mobile phones, the silicone chip is at the foremost of people’s minds. Yet, despite its importance in shaping the world around us, many of the technologies that we take for granted would not be possible without the atomic clock.
The first atomic clock was developed in 1955 by British born Dr Louis Essen who worked during WWII, on high-frequency radar which led him to develop a resonance wavemeter, that was used to successfully measure the speed of light.
Using the same technology he developed the first accurate atomic clock in 1955 at the National Physical Laboratory in the UK. It was based on the resonance of the caesium atom.
According to quantum theory, atoms can only exist in certain quantized energy states depending on the orbits of electron about their nuclei. A cesium clock operates by exposing the atoms to microwaves until they oscillate at one of their resonant frequencies. It was discovered that a caesium atom would resonate at 9,192,631,770 hertz (times a second).
Because of this exactness in resonance and the high number of oscillations atomic clocks (sometimes referred to as caesium oscillators) are exceptionally accurate. Essen’s first device was accurate to a second in a thousand years but the next generation of atomic clocks are now so accurate they will not lose a second in several hundred million years.
Because of this high level of accuracy problems have occurred in the way we structure out timescales. traditionally GMT (Greenwich Meantime) has been the basis of time. GMT is based on the principle that the Sun is highest in the sky at noon (or over the Greenwich meridian line). Unfortunately as atomic clocks are so accurate it has been discovered that the Earth itself is not as precise in its revolution and is often slowed by the gravitational effects of the moon.
If nothing was done about this then eventually International Atomic Time (TAI – the time told by atomic clocks) would drift out of synchronisation with GMT and eventually night would drift into day (albeit in several millennia).
Coordinated Universal Time (UTC), was developed to counter this. It is based on TAI but accounts for the slowing of the Earth’s rotation by adding occasional ‘leap seconds’, 33 of which have been added since the 1970’s.
Atomic clocks are crucial for telecommunication networks.Voice and data transfers that have to travel around the world in packets needs to be time-stamped as time is the only reference point a computer can use to reassemble the packets.
Atomic clocks have also made satellite communication possible, as the speed of light is so fast (900,000 km a sec) a tiny variation in time could create massive differences. Global Navigation Satellite Systems (GNSS) such as GPS (Global Positioning System) are heavily dependent on atomic clocks as the timing signal is what a GPS receiver uses to triangulate a location.
Thanks to atomic clocks and devices such as the NTP server (Network time Protocol) that distributes an atomic clock timing reference received though either a radio or GPS receiver, to a computer network, synchronising the computers to UTC. Thanks to technologies such as this, electronic transactions can now be done within five nano-seconds. Without such technologies online trading such as the stock exchange, buying an airline ticket and even Internet auction sites would not be possible.
About the Author
Richard N Williams is a technical author and specialist in atomic clocks, telecommunications, NTP and network time synchronisation helping to develop dedicated NTP clocks. Please visit us for more information about a network time server or other ntp server solutions.
Galileo – the atomic clock
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