RADIO CONTROLLED CLOCKS | WATCHES » Scientific

Oregon Scientific Contemporary Wall Clock with Indoor Temperature

Clockmad — Sat, 21 May 2011 23:14:33 +0000

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Oregon Scientific BAR208 Wireless Weather Station with Humidity

Clockmad — Thu, 19 May 2011 22:44:01 +0000

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Oregon Scientific BA900 Crystal Weather Station

Clockmad — Sat, 14 May 2011 16:38:07 +0000

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Oregon Scientific Radio controlled alarm clock RM968 weis

Clockmad — Fri, 13 May 2011 18:30:17 +0000

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Clockmad — Wed, 11 May 2011 08:04:30 +0000

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Oregon Scientific Easy View Compact Clock

Clockmad — Tue, 06 Jul 2010 21:32:48 +0000

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The Atomic Clock – Scientific Precision

Clockmad — Sun, 04 Jul 2010 22:00:00 +0000

Precision is becoming increasingly important in modern technologies and none more so than accuracy in time keeping. From the internet to satellite navigation, precise and accurate synchronicity is vital in the modern age.

In fact many of the technologies that we take for granted in today’s world, would not be possible if it wasn’t for the most accurate machines invented – the atomic clock.

Atomic Clocks are just timekeeping devices like other clocks or watches. But what stands them apart is the accuracy they can achieve. As a crude example your standard mechanical clock, such as a town centre clock tower, will drift by as much as a second a day. Electronic clocks such as digital watches or clock radios are more accurate. These types of clock drift a second in about a week.

However, when you compare the precision of an atomic clock in which a second will not be lost or gained in 100,000 years or more the accuracy of these devices is incomparable.

Atomic Clocks can achieve this accuracy by the oscillators they use. Nearly all types of clock have an oscillator. In general, an oscillator is just a circuit that regularly ticks.

Mechanical clocks use pendulums and springs to provide a regular oscillation while electronic clocks have a crystal (usually quartz) that when an electric current is run through, provides an accurate rhythm.

Atomic Clocks use the oscillation of atoms during different energy states. Often caesium 133 (and sometimes rubidium) is used as its hyperfine transitional oscillation is over 9 billion times a second (9,192,631,770) and this never changes. In fact, the International System of Units (SI) now officially regards a second in time as 9,192,631,770 cycles of radiation from the caesium atom.

Atomic Clocks provide the basis for the world’s global timescale – UTC (Coordinated Universal Time). And computer networks all over the world stay in sync by using time signals broadcast by Atomic Clocks and picked up on NTP time servers (Network Time Server).

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 an NTP server or other NTP time server solutions.

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Oregon Scientific Radio Controlled Funky Projection Alarm

Clockmad — Thu, 24 Jun 2010 01:33:10 +0000

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Oregon Scientific RCC Travel Clock RM823

Clockmad — Mon, 11 Jan 2010 14:40:55 +0000

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Oregon Scientific Solar Powered RC Clock RMR802

Clockmad — Sat, 09 Jan 2010 15:19:06 +0000

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Oregon Scientific World Travel Projection Clock

Clockmad — Sat, 09 Jan 2010 00:57:33 +0000

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Radio Controlled Projection Clock and Thermometer

Clockmad — Fri, 08 Jan 2010 11:33:07 +0000

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Oregon Scientific Radio Controlled Clock Sensor RTGR328N

Clockmad — Fri, 08 Jan 2010 01:59:43 +0000