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atomic clock tagged articles (0-50 of 1199)

  • NTP Time Server External Timing References - Atomic clocks are extremely complex pieces of equipment created to maintain highly accurate time. Most atomic clocks are so expensive and complex that they are only generally found in National Physics laboratories or National Standards Laboratories. Commercial timing equipment is generally based on GPS or National Time and Frequency radio time broadcasts. By using a relatively low-cost radio or GPS receiver highly accurate timing information can be received without the expense of installing a true atomic timepiece. This article describes available atomic clock timing references and their use in computer network time synchronisation and NTP time servers. National Radio time and frequency broadcasts transmit accurate time and date information from a radio transmitter. A number of radio time and frequency broadcasts are available, such as: WWVB, DCF-77 and MSF-60. The time and frequency radio transmissions are referenced to a precise atomic clock time source.
  • How To Sync Your PC's Time To The Radio Atomic Clock Time Signal - The MSF-60 radio atomic clock time signal provides an accurate time reference broadcast throughout the British Isles. The time signal can be used as an accurate time reference to synchronise time on computers and computer networks. This article describes how the MSF-60 time signal can be decoded and used to synchronise computers and NTP time server systems. The time signal was broadcast from Rugby in the East Midlands. It was maintained by originally maintained by British Telecom. The radio transmitter has recently been relocated to Cumbia, North East England. VT communications was awardedIt is now maintained. The signal is a long-wave radio signal broadcast at 60kHz.
  • Use a NTP Server To Keep Precise Network Time - Computers systems have internal real-time clocks that are notoriously poor at keeping accurate time. Hence, the time on all computers and network devices can drift away from one another at different rates. This can be a real headache when trying to synchronise time-critical processes. However, it is quite simple to synchronise every device on your network to an accurate time reference - a NTP time server.
  • NTP Server Reference Clocks: What's Best Radio or GPS ? - A NTP Server is a network device that provides network servers and other network infrastructure with an accurate timing reference. A NTP Server obtains precise time from an external time source, such as radio time and frequency broadcasts or GPS. This article describes the external time references that are available to synchronise NTP servers and discusses the merits of each. There are a number of radio time and frequency broadcasts that are available in various locations.
  • Maintaining Precise Time On Your Computer by Utilising NTP Servers - Computer servers and workstations have integrated real-time clocks that are based on simple, cheap, crystal oscillators. The real-time clock is battery backed and maintains system time even when the computer is switched off. However, crystal oscillators characteristics change significantly with temperature variation, which can cause the time to drift by several minutes each day.
  • Clocks Do More than Tell Time: They Express Your Style - To those who think that all clocks are alike, it's time to think again. Today, clocks do more than simply tell time; they are an expression of your personal style. Whether you're in the market for a watches or wall clocks, alarm clocks or patio clocks, your choices have never been more varied. Here is an overview of the versatile world of timepieces.
  • Timing is Everything: NTP and the Importance of Accurate Network Time Synchronisation. - On occasion we all need to know the time and we have a multitude of different devices to tell us it; from our mobile phones and wrist watches to the office wall clock or the chimes on the radio news. But how accurate are all these clocks and does it matter if they are all telling different times?
  • Installing and Configuring NTP on LINUX - NTP (Network Time Protocol) is an application developed to provide the synchronisation of computers and computer network devices. NTP defines algorithms and a protocol structure to accurately synchronise computer time.
  • PC Time Synchronisation Services - Computers maintain time and date information using internal real-time clock chips. These chips are battery-backed and maintain time even when the power to the computer is switched off. However, the components utilised are relatively low-cost devices and have a tendency to drift by relatively large amounts. This article describes various ways of keeping the time on your computer accurate.

  • History of Horology; Sundials to Atomic Clocks - Mankind has always been preoccupied with measuring and recording the passage of time. Timekeeping has been essential for the development of civilisations; from knowing when to plant or harvest crops to identifying important events in the year. Time has historically been measured in relation to the movement of the Earth; a day, is one revolution of the planet; while a year is an entire orbit of the Sun. Calendars were developed from as far back as 20,000 years ago when hunter-gatherers scratched lines and gouged holes in sticks and bones to possibly count the days between phases of the moon.
  • How to Configure an NTP Network Time Server in Windows XP - Computer time synchronisation is highly important in modern computer networks, precision and time synchronization is critical in many applications, particularly time sensitive transactions. Just imagine buying an airline seat only to be told at the airport that the ticket was sold twice because it was purchased afterwards on a computer that had a slower clock! Modern computers do have internal clocks called Real Time Clock chips (RTC) that provide time and date information. These chips are battery backed so that even during power outages, they can maintain time but personal computers are not designed to be perfect clocks.
  • Using GPS to Synchronise Computer Systems - The GPS system is global navigation system introduced by the US military. The system provide navigation and positioning information anywhere on the face of the Earth. The GPS system also provides a highly accurate and precise time and frequency signal ideal for computer timing applications. The GPS system is a orbiting constellation of 24 satellites, each broadcasting time and position information around the globe. This article describes how the GPS system can be used to provide an accurate time and frequency reference for NTP servers and computer network time synchronisation.
  • How to Configure an NTP Network Time Server in Windows 2003 - Computer time synchronisation is highly important in modern computer networks, precision and time synchronization is critical in many applications, particularly time sensitive transactions. Just imagine buying an airline seat only to be told at the airport that the ticket was sold twice because it was purchased afterwards on a computer that had a slower clock! Modern computers do have internal clocks called Real Time Clock chips (RTC) that provide time and date information. These chips are battery backed so that even during power outages, they can maintain time but personal computers are not designed to be perfect clocks. Their design has been optimized for mass production and low-cost rather than maintaining accurate time.
  • Configuring An Authoritative Time Server On A Windows 2000 Server - The Windows 2000 Server operating system includes a time synchronisation service called w32time or ‘Windows Time’. The service is installed by default and runs continuously in the service list. The time service is required by the Kerberos authentication protocol to ensure all computers running in a Windows 2000 environment utilise a common shared time. This article describes how to set up and configure an Authoritative Time Server in a Windows 2000 Server environment. It also discusses the hierarchical relationship at the heart of the service and provides some configuration hints and tips.
  • LF Radio NTP Servers: How to Decode the DCF-77 Time Broadcast - The DCF time and frequency radio transmission is broadcast from Frankfurt, Germany. The time signal can be utilised by computer timing equipment to provide a precise time reference. Network timing solutions, such as NTP server systems, which provide an accurate time reference for computer networks can utilise the signal to provide an accurate external source of time. This article describes how the DCF-77 signal can be decoded to provide an accurate time reference for NTP servers and other computer timing applications. Before describing the format of the transmission, it's worth mentioning a little about the history of the transmitter.
  • Configuring a Stratum 1 GPS Based NTP Server - The Network Time Protocol (NTP) was developed to provide a way of synchronising Internet clients to an accurate network time reference. NTP allows the time on client computers to be set to within a fraction of the correct time. The NTP protocol is a suite of programs designed specifically for time synchronisation purposes. The application source code is freely downloadable from the NTP website. Originally developed for the Linux operating system, NTP has since been ported to Microsoft Windows platforms. Combining an accurate external timing reference with the NTP application provides a highly accurate network timing device. This article describes how to utilise a low-cost GPS receiver in combination with the NTP software distribution to provide an accurate stratum 1 NTP server timing reference.
  • Hang on a Second: History of the Leap Second - We have all heard of a leap year - that extra day added to the calendar every four years. It may give us a longer February but it is also essential in keeping our calendars and seasons accurate.
  • Utilising GPS to Serve Accurate Computer Time - The GPS system is a US military system to provide worldwide positioning information for navigational purposes. The system is maintained for the military by USNO, the United States Naval Observatory. The system is implemented by 24 orbiting satellites, each with precision timing references that are used to triangulate position. With the rise in low-cost GPS navigational equipment, cheap GPS Antennas and Receivers can provide a precise time and frequency reference for computer network synchronisation. This article presents an introduction to using the GPS system for computer timing applications. It describes the equipment that can be utilised to provide a precise time resource for computers and computer networks. All of the orbiting satellites have on-board precise timing references that can be utilised by time servers to provide accurate time. Each satellite continually broadcasts accurate time and positioning information.
  • Killing Time; the Importance of Time Synchronisation in Criminal Cases. - On occasion, we all need to know the time and we have a multitude of different devices to tell us it, from our mobile phones and wrist watches to the office wall clock or the chimes on the...
  • Bulova Clocks: An Asset To Home Improvement - We can’t have too many clocks in our house. They serve as our constant reminders of appointments, classes and family activities that we shouldn’t miss or be late for. We need clocks in order to tell us when to get up, when to start preparing breakfast, when to wake up our kids and when to shoo them to school.
  • Is An Alarm Clock Cd Player More Desirable Than My Old Alarm Clock Radio - The short answer is that the sound quality that the alarm clock CD can supply is far superior to that of the alarm clock radio. If there is one thing that I prefer about my alarm clock CD over my old alarm clock radio it is simply the sound quality. My old clock radio was great and I had good choice as to how I could use it but the quality of sound left much to be desired. The sound repetition was very trebly if you know what I mean.
  • Get More Website Traffic! Alvin Phang's Atomic Bloggin Makes It Possible With Only A Click Of Your Mouse. - Atomic Blogging has been right in front of my face for a while. If I'd looked a little closer at it before I would have realized it was more than I originally thought.
  • Using GPS to Synchronise NTP Time Server Systems - The Global Positioning System (GPS) is most widely known as a system for vehicle and marine navigation. However, each GPS satellite orbiting the earth also has an integrated precise atomic clock that can be used as a reference clock for NTP time servers and for general computer timing applications. This article describes the components required to utilise GPS for computer timing applications. It also discusses how the GPS system can be used for computer network timing by using the Network Time Protocol (NTP) and NTP time servers. The GPS system is a United States military system intended for global navigation.
  • NTP Servers Simplified - The Network Time Protocol, or NTP, is an internet protocol developed to distribute accurate timing information to network time clients. NTP is a client-server based protocol widely used throughout the Internet for accurate time synchronisation. This article describes some of the features of NTP and attempts to simplify some of the terminology used. NTP was originally developed 25 years ago by Dr David Mills of the University of Delaware. The protocol is one of the oldest Internet protocols still in continuous use. Originally developed for the LINUX operating systems, it has since been ported to the Microsoft Windows operating systems.
  • Network Time Synchronization through GPS Time Servers - This article discusses how GPS Time server System obtains exact timing information to give a very accurate timing reference for Network Time Synchronization. GPS System is a navigation system operated by the Military but also can be used by the civilian and does not need any subscription. The GPS System is known as an extremely accurate global positioning system. Each GPS satellite has an onboard a highly accurate atomic clock, ideal for supplying the correct time for computer network time synchronization. GPS Time Servers: The GPS System exist of a constellation of 24 orbiting satellites, each has a precise atomic clock timing reference and covers the entire globe.
  • The Lost Eleven Days - Have you ever gone to bed one night and wondered just where the day went? Well could you imagine waking up to discover that eleven days had vanished completely? That is just what happened in 1752 when the entire inhabitants of Britain and America went to bed on Wednesday 2 September, only to awake on Thursday 14 September. However, it wasn't an epidemic of sleepy sickness or even a mass dose of laziness that kept the entire populace in bed but merely the authorities attempting to synchronise with the rest of the world by adopting the Gregorian calendar. The Julian calendar (named after Julius Caesar) had been in use since biblical times but was finally phased out throughout Europe in the 1582 but it took the resolute Brits and Americans another two hundred years to follow suit.
  • Why Should I Consider Buying An Alarm Clock? - Let’s face it without an alarm clock most of us would never get up in the morning. My Dad used to say, “I go to bed at night and say to myself, wake up at six thirty in the morning Harold, I bang my head three times on the pillow and then fall asleep, and in the morning I always wake up on time”. Well I tried his method and all I got was earache from my boss in the morning for being late for work!
  • What is Time? From Sundials to NTP - Time is an abstract concept. We cannot necessarily see it, touch it or change it, but we are aware that it exists and that is continues to keep passing us by. It has long been thought that time was constant and was the same everywhere in the Universe. However, Albert Einstein's theories of relativity (General and Special Relativity) have changed the way we think about time. Einstein suggested that time is part of a four dimensional 'space-time' the other three dimension being the up/down, left/right, forward/backward dimensions we are all aware of.
  • Calendars and the Measurement of Time - We are all aware of the passing of time; it governs us throughout our lives constantly ebbing away, dictating when we should eat, sleep, wake or work.
  • Build A Wooden Gear Clock--It's Easier Than You Think - Two Hundred years ago in the early 1800s some American clock makers were crafting shelf and mantel clocks with movements made entirely from hardwoods.Gear wheels were carefully shaped from cherry or other hardwoods and assembled with great care so as to ensure smooth running.Many wooden works clocks have survived for two centuries and are now costly antiques.They command prices in the thousands of dollars when they are available.Many collectors who would like to have such a clock can't afford the high price tag naturally.
  • The Collectors’ Travel Alarm Clocks - Collecting travel alarm clocks can fill your shelf with the latest and trendiest models from tried and tested clock makers. Read on to find out about the latest models of travel alarm clocks. What’s more, these are favorite gift items for the people who matter. Different Alarms and Alerts There are different travel alarm clocks that suit everybody’s lifestyle.
  • Why Is Waking Up To An Alarm Clock Radio Such A Good Idea? - There are many good reasons as to why you should use an alarm clock radio to help you wake up in the morning. The main reason is that it is a tried and tested method of getting the brain into gear quickly. You see as the mind begins to awaken from sleep the alpha wave cycle that has slowed down as it were during the night needs to be restarted. It needs a means of moving the stream of consciousness from a state of inertia to an alert state. A state that is ready to take on the challenges of the day with vigor, anticipation and excitement.
  • Wooden Works Clocks A Craftsmans Delight - Shelf clocks and wall clocks with all wooden works were made by some American makers in the early 1800s.Long case grandfather clocks were commonly made in the 1700s with wooden gear movements.The long case of the grandfather clock allowed greater drop distance for the weights which drove the movement.Shelf clocks of the pillar and scrill type were popular in the 1800s and were made by American makers.
  • Give An Old World Charm To Your New World House With A Grandfather Clock - Do you feel there is something missing in your dining room despite all the modern appliance and colorful bric-a-bracs? An elegant grandfather clock will complete the puzzle. There is something truly special about having one around. A fluid mix of the old and the new New houses are a dime a dozen. Everything inside is modern, from the taps to the doorknobs. There may be some dated items like an old rolodex or a circa 1950s music box, but that’s really all there is to remind the occupants of greater days long gone.
  • Celebrating Life And Love... Give The Gift Of A Floor Clock - The real essence of life is all about celebrations. People celebrate births and deaths. Families get together for the fourth of July, Christmas, New Year’s Eve, Thanksgiving, and every other holiday under the sun. Accomplishments in school and work are also commemorated. Indeed, celebrations make life worthwhile, and possibly one of the biggest and most important celebrations is the union of two souls in matrimony. After all, not everybody is lucky enough to find that special someone and when they do, it’s always nice to be a part of their joy. Wedding Bells A-ringing A wedding is the quintessential joyful event. Both friends and family rejoice and toast to the couples’ health, well-being, and long life together.
  • Hesitating To Get A Grandfather Clock? Think Again! - If you've remained undecided about getting a grandfather clock, it is understandable. The price is quite stiff, yes, but have you looked long enough for one? There is always one that boasts of topnotch quality that fits your purse, so why hesitate? The Pearl of Great Price To what extent would you go to get the pearl of great price? To own the perfect pearl, man may sell his possessions to get one. But for the perfect grandfather clock, you need not go that far. For a few hundred dollars, you can own the most sought-after item for the home or office.
  • What is a Antique Clock ? - Antique collecting is the assembling of items of aesthetic, historical or monetary values from earlier eras. How old does an antique have to be to be considered an antique? Clocks are highly desirable collectibles when antique.
  • A Grand Wedding Gift In A Grandfather Clock - As far as life’s grand and momentous occasions get, a wedding is, by far, the grandest and most momentous of all. Whether it’s yours, a friend’s, or a family member’s, a wedding is a joyful union of two souls, and you will want to be a part of it, even in the smallest way possible.
  • Finding Elegance In The Howard Miller Grandfather Clock - What’s in a name? A clock by any name is still a clock, but the Howard Miller grandfather clock stands out and beats them all. Beautiful Clocks by Howard Miller If you are looking for elegant floor clocks, you don’t have to go any further.
  • How to Run a Network Time Server using Windows XP - Time synchronisation in modern computer networks is essential.
  • How To Shop For Grandfather Clocks - Are you considering getting grandfather clocks? You must be warned early on that your shopping will not be very easy, not for this one. Shopping for Grandfather Clocks is Not Easy For one, you might find some dealers who will only try to dupe you out of your money. And when you are considering spending as much as $50,000 just so you can own one of these valuable antique grandfather clocks, you face a real problem. It’s not easy to tell which one is fake and which one is genuine. Looking for the right grandfather clocks to suit your interiors is hard enough already. Now that you are trying to shop for a genuine heirloom, your problem just increased threefold. This being said, you must go back to the basics.
  • Time Clock Software - How long have you been looking for the right time clock software for your company's payroll issues? Well,Employee Time Clock software is exactly what you have been looking for!
  • Howard Miller Grandfather Clock: Starting Your Own Tradition - Gaining independence and getting your own home with all the modern stuff is certainly nice. But the comfort of family traditions of your old home with mom and dad is priceless. But who says you can't get the best of both worlds? Get a genuine Howard Miller grandfather clock and start your own tradition. Things To Consider Before Shopping Howard Miller is known all over the world for its unsurpassed excellence and incomparable workmanship.
  • 7 Steps To Take Before Moving Your Grandfather Clock - Some time or other you will have to move your longcase clock whether it's in the process of moving house or just time to clean behind the case and move it for decorating. A lot of damage can be done by just picking the clock up and moving it in one piece without taking a number of precautions So whether you are moving your grandfather clock ten foot or ten mile Always 1.
  • High Tech Alarm Clocks - You might be the type of person that has difficulty in getting to the breakfast table but an old friend called the alarm clock can solve your problem. These small and often forgotton clocks are not just for awaking the dead but boast many more functions than in the past. Nowadays, we can choose from different types of alarm clocks. There are now two types of alarm clocks - the analog alarm clock and the digital alarm clock.
  • Top Tips In Selecting Antique Grandfather Clocks - While you might have digital clocks that are a lot more convenient and affordable, nothing beats owning a classic timepiece like antique grandfather clocks. Some people are lucky enough to have this timeless heirloom in their family. But for those of you who don't, there are numerous antique grandfather clocks in the market. Things To Do Before You Go Shopping There's a lot more to purchasing antique grandfather clocks than just deciding on getting one and heading off to a clock dealer. Buying antique grandfather clocks is a serious task by itself and definitely a big undertaking.
  • Share The Never-Ending Magic Of A Grandfather Clock - Times are a-changing, but there will always be an old world charm about grandfather clocks. The steady chimes and the striking of the hour tells you that some things never change and everything is all right with the world. The First Grandfather Clock Seventy-four years after Galileo Galilei discovered that a pendulum kept time better, the first grandfather clock was designed using his blueprints. Contrary to Galileo’s and the popular belief about the usefulness of pendulums, the later models did not keep time very well. Eighty-eight years later, in 1670, it was discovered that longer pendulums made the clock tick-tock in time. William Clement who made the discovery designed these longer pendulums, which in turn required longer casings. The first grandfather clock was then encased in a long box resembling the coffins used in those times.
  • How To Set Up An Authoritative Time Server In A Windows 2003 Server based Active Directory Network - The Windows Time service (W32Time) is designed to allow all Windows 2000 or later machines in an organisation to utilise a synchronised time. The service is used to ensure the security of the Windows Kerberos authentication protocol. This article describes the procedure to set up an Authoritative Time Server for a Windows 2003 Server based Active Directory Network. It also describes the hierarchical relationship of the time synchronisation authority. The article also presents some time synchronisation hints, tips and troubleshooting. The 'Windows Time' Hierarchy.
  • Cuckoo Clock Art - A cuckoo clock is typically pendulum driven, striking the hour and half hour, using bellows and pipes that imitate the cuckoo call. Today's cuckoo clocks are almost always driven by weights. The weights are made of cast iron in a pine cone shape. Most cuckoo clocks today are made in the "traditional style" to hang on a wall in your home or office. In the long history of clock making and time keeping, cuckoo clocks play a large role in the appreciation of art in clocks. The traditional style of the cuckoo clock is a wooden case decorated with carved leaves and animals and an automation of a bird that appears through a small door while the clock is striking the hour and half hour, using bellows and pipes that imitate the cuckoo call.
  • How GPS can be used for PC Time Synchronisation - GPS is a US military system for global navigation; it is widely used for vehicle tracking and marine navigation. The system consists of 24 orbiting satellites, which can provide positioning information anywhere on Earth to within a few meters. The satellites achieve this by utilising highly accurate atomic clocks and triangulation. However, the on-board atomic clocks can also be used as relatively inexpensive time references for computer time synchronisation applications.

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