What is an atomic digital wall clock?

An atomic clock is one that uses an atomic resonance frequency standard for its timekeeping element. This is the most accurate type of clock there is. Because this clock is so accurate, it is the primary standard for international time distribution services, and it controls GPS satellite signals and the frequency of tv broadcasts.

The atomic digital clocks, like a wall clock, is automatically synchronized to the signal sent out by the U.S. Atomic Clock in Colorado.

What About Their Accuracy?

An atomic digital wall clock maintains such great accuracy that they never need adjusting. It adjusts each day back to the split second, and automatically adjusts for daylight savings time, leap year, and changes in time zones. How great of accuracy is that? How about only losing one second every 80 million years!

And Their History?

Atomic clocks were first built in 1949. But it wasn’t truly accurate – that didn’t come until later, when Louis Essen of the UK made his model in 1955. When that was developed, it was agreed that the second would be based on the atomic clock, rather than the rotation of the Earth around the Sun as it was measured previously.

There have been many versions of digital atomic clocks, both wall and smaller. Some have used hydrogen, caesium, or rubidium. The caesium type is the most revered. The caesium oscillator has become the primary standard for time and frequency measurements throughout the world. Rubidium standard clocks are inexpensive and small, but are only stable for a shorter time period. They are useful in many applications, such as aerospace, portable, and commercial types. Hydrogen type are much more stable for short term applications, but they are less accurate over the long time period.

And The Future?
In August 0f 2004, scientists showed they had made a computer chip sized atomic clock. It was one-hundredth the size of any previously made. It could be used in tiny places, like wristwatches, but would also be good in larger spaces, like a digital alarm clock radio or even a digital atomic wall clock. This new type of atomic clock is more accurate than ever before, utilizing strontium atoms trapped in a laser grid. Its inaccuracy is less than one second in 200 million years. That just might be accurate enough for any of us.

Related posts:

1. Basic Information About Digital Atomic Clocks
2. It’s Not Your Grandfather’s Clock: Atomic Wall Clock
3. See The Time On A Wall Or Ceiling With an Atomic Projection Clock

Some digital alarm clock radios are intuitive – you can tell immediately which buttons to push in order to do what. Want to set the alarm? Look – here’s the button. Want to fall asleep to music? Here’s the button for that. On the other hand, some are so complex that even reading the manual doesn’t help. Often, the manual appears to have been written by speakers of a different language, and is more frustrating to read than just struggling to figure it out without the manual in front of you. Be sure the digital alarm clock radio you select is one you will be able to set right so that you get the results you want – like the alarm going off when you want it to, not 12 hours later!

Wake Up, You Lazy Bum!

Digital alarm clock radios have one important function – to wake you up when you want to be awoken. If it won’t wake you, it is useless. Some digital alarm clocks with radios have an adjustable level for the alarm. Some alarm clocks even talk – “Time to get up, Sleepyhead!” If you are a heavy sleeper, be sure it is loud enough for you. If noise isn’t enough to wake you, does it have a light feature, where it gradually wakes me with a “sunrise”?

Bells And Whistles?

While it isn’t important to have all the features available, you should look for the features you want in a digital alarm clock radio. If you want one that has two alarms (one can be for weekdays, the other for weekends, or one for each person), or can wake you using your favorite CD, look for a digital alarm clock radio that offers that feature – they’re available. Maybe you want one with an adjustable brightness of display – available! How about a digital atomic clock – one that keeps the most accurate time – available! There are more features available than you probably realize – you can get a digital alarm clock radio with nature sounds to wake you, or even with aromatherapy options! Imagine being woken with the sounds of the ocean and the smell of the sea breeze?

What An Ugly….

It may seem superficial, but be sure the digital alarm clock radio is one that looks good to you. Styles come and go, but hopefully this digital alarm clock radio won’t be replaced anytime soon. Be sure it looks good to you, that you will want to look at it every day for the next several years.

If one keeps these categories in mind while shopping for a digital alarm clock radio, it is easy to buy one that meets the needs for ease of use, “wakeupability”, important features, and even good looks.

Related posts:

1. The Evolution Of The Digital Alarm Clock
2. Digital Clock Radios Have Been Around For A Long Time And Are Here To Stay
3. Choosing A Digital Travel Alarm Clock?