Under ground in the Cellar at the Marine is Justervesenets tidslaboratorium, which, with its very special watches count seconds and fits on the official Norwegian time. And now it is time to set the clocks from daylight savings time to “standard time” or “winter time”, as some like to call it.
In the Uk switch we between standard time and daylight saving time last weekend in march and the last weekend in October, so this coming weekend you need to set the clock.
the Rule is that daylight saving time starts 02: 00 last Sunday in march and ends at 03: 00 last Sunday in October.
Thus, we go to winter time on the night of Sunday 30. October.
Should we set the clock forward or back?
The eternal question many are wondering is of course:
Which way is what we’re going to set the clock, is it forward or back?
Now in the autumn we set the clock back. It should be set back one hour, from at 03: 00 to at 02.00 on the night of Sunday 30. October.
It means that we get the chance to have one hour extra sleep on the night of Sunday. It also means that there will be a little brighter in the morning for a while, and that it gets earlier dark in the evening. So now you should remember the reflex!
the Rule of thumb for setting the clock
There are many do’s and don’ts for which way the clock should be set, for example:
- the Clock should always be set to summer; in the spring, set the clock, then back to summer and in the autumn set it back to summer.
- You should do as you do with hagemøblene; in the spring set them forward (and you set the clock forward) and in the fall, you set them back to storage (you set the clock back).
do you Have any clever or funny do’s and don’ts for klokkestilling? Share them in the discussion below!
Atomurene: The most accurate clocks we have!
Cesium-atomic clocks are among the most accurate clocks we have. A PC clock may, for example, quickly go ten seconds error per day, and a good quartz watch will quickly be able to get one second feilvisning in the course of ten days. A good caesium-atomic clock has an uncertainty of approximately one nanosecond (milliarddels second) per day. This will in other words say that the cesium-clocks can have an error that is equal to one second in three million years.
Did you know that the Norwegian standard time is one hour ahead of the so-called “UTC-time”? UTC stands for “Coordinated Universal Time”. It is a common, legal, time that applies all over the world. English daylight saving time is two hours ahead of UTC time, while the Norwegian standard time is one hour ahead of UTC.
How come the official time from?
the Clock is powered from the Justervesenets atomic clock, which has an uncertainty of plus/minus 0,1 microsecond.
Under the ground in the Calibration and in the Basement we find the official time.
In the tidslaboratoriet where inside there are four atomklokker which counts seconds, and therefore determine the official time.
Dinside have visited tidslaboratoriet and seen how this works. You can read more and see more photos from there in this article.
in Short, it works like this: Traditionally, time has been linked to the sun’s time – and directly to “Greenwich Mean Time” (GMT). Because the earth does not rotate completely smoothly, this was however not accurate enough. Therefore the “International Atomic Time” (TAI) was established and this is therefore based on the definition that we have described above, and has been so since 1967.
9 billion oscillations
One second is defined as the duration of 9.192.631.770 oscillations of the radio waves being captured by the caesium-133 atom.
It is this which is counted in atomic clocks, on which is converted to times. Atomic clocks and the registrations made in Metrology, is included in the international system to determine the time in the world.
Sometimes we need to enter with a skuddsekund
Sometimes need the clock to be adjusted, that it should keep pace with the irregular earth’s rotation. This is done in the form of adding skuddeskund. This practice leads however to some challenges for computer systems that have continuous time scales that do not make jumps, and is therefore disputed.
Every fifth day provided time values from the Norwegian tidslabben to the international agency of weights and measures in Paris, the BIPM (Bureau International des Poids et Mesures).
There are about 400 atomklokker in the 70 laboratories around the world that participate in this collaboration – and the BIPM in Paris is thus a kind of “hovedtidssentral”. BIPM compare and match all klokkemålingene, which is then used to set UTC, i.e. Coordinated Universal Time.
ALSO READ:
So you get the most out of the rest of the holiday in 2016
When is the christmas holidays, winter holidays and easter holidays? Gain control with our skoleferieoversikt!
Vacation to good? What can you do with restferien that you do not get taken out in the year?
No comments:
Post a Comment