The definition of the kilogram will change after two weeks
About two weeks later we will witness one of the most important milestones in the history of science. A vote will be held. The definition of 4 of 7 basic units of measurement, the ancestor of all units of measurement used in science, will change .
I have a question for you before I give you details. Have you ever thought about what we call “kilograms çıkmış? As a basic unit of mass, we use this word frequently in our daily lives. Especially those who try to lose weight thinly makes calculations on this subject But when it comes to print, I wonder how right that thing? Nowadays, almost everything is measured digitally, but in the past scales were used. For example, while shopping in the market in Amasya, the seller used to put the muscles of the apples on one scale and the weights on the other . How do we know that 1 kilogram is 1 kilogram? According to whom, what are they calculated, produced, used?
For this, we must first go from Amasya to Gebze. Turkey's most accurately metered kilograms of there, kept at the TUBITAK National Metrology Institute. All other kilograms are made according to that prototype number 54 . So where did Tubitak get this kilogram? For this, we have to get up from Gebze and go to Paris. In the basement of this building near Sevres , there is an airtight glass lantern in a well-protected locker that can only be opened with three separate keys. There's another glass lantern in it. And another one in it. That's in it… If I was telling a tale now, I would have said one apple. But all I've said so far is real. And in the basement of that building just outside Paris, hiding under three separate glass lanterns intertwined in a locked vault, the world's only true kilogram. The French call him “Le Grand K.. So big K. “Weight of weight. Tek One kilos that dominates all the weight!
Made in 1889. 90% platinum, 10% iridium. I can only show you a computer-generated image of it that is not real. Because you can't see the truth. There are 40 copies produced with him. Later, copies of these copies were made and distributed to the countries of the world . Here's the copy number 54. Each country makes its own arrangements according to these copies. Shall I show you the official definition of the word “kilogram deki in us? Then take a look at Article 8 of the “law of measures and settings 35 no .
How is the authenticity of these copies checked? I told you you couldn't see the original. These copies are sent to Paris every 40 years for comparison. This verification process has only been done three times in history so far as it is once every 40 years. And you know what? Copies and the original kilograms are changing over time. According to the calculations, the original kilogram has so far lost 50 μg. I mean, he's weakened by one in 50 million. It's like the mass of a particle of dust. The relationship with the kilogram can be seen as an insignificant detail that can only be neglected for ordinary people like us, which consists of the number of scales. But for science and technology, this is a very important loss. Last week, I gave some insight into future technological developments and, for example, said that in 2035, small nanometer-scale robots would be produced. There's no need to go that far. Think of your mobile phone or computer you are currently watching this video. These measurements are also used in the production of microprocessors inside it and it is necessary to be extremely sensitive.
I told you there are 7 basic units of measure used in science . All the countries of the world use them. Even in the US laboratories, which normally adopt different measurements from us, such as pounds, inches, miles, all measurements are made according to these main 7 units of measurement and the other units of measurement derived therefrom.
Let's say you don't want to weigh those apples in Amasya, but send them into space. How do you calculate the energy in Joules to lift a lime diamond with a mass of 100 grams vertically up to one meter in the air? As you can see, we have to use kilograms in this formula. If the first kg we use is incorrect, the account we will make is also incorrect. Then we'il think about how to sell apples on Mars.
Everything is chained together. In order not to break the chain, we have to reconsider the initial ring, the first kilogram. I have referred to two more videos in a single sentence, but indeed, scientists are planning to redefine such an important unit of measure. This brings us to the topic I was talking about at the beginning of this video.
Set up your calendars. On 16 November 2018, the Konferans General Conference of Weights and Measures ıla will be held in France, near the Chateau of Versailles. Representatives from 57 countries will decide on a new definition of the kilogram at this conference. The weight of our 129-year-old famous kilos will probably be museum. Instead, a vote will be held for alternative methods considered. And as a result of this vote, the kilogram will be connected to a universal constant. Planck's constant.
How do we remember the name Planck? There was a video where I told the biggest and smallest things in the observable universe. When we landed there in subatomic particles, we started talking about Planck units. Here, the Planck constant (h) is the constant ratio between the energies (E) and the frequencies (ν) of the photons, the smallest energy packets in light: E = hν.
Scientists want to connect a very important unit of measurement, such as kilograms, to something more universal, rather than to an object stored in crates. For this purpose, in 1999, using Einstein's famous formula E = mc 2, they established a relationship between Planck constant and mass and proposed that the kilogram be defined accordingly . There are other research groups that have been created as alternatives and they have different solutions, but as I said, this definition will probably be chosen and will be used in the world and in our country as of May 20, 2019.
The first phase of the Kibble Balancing Experiment for Tubitak last month was successfully completed and reached a level of 3 x 10 -7 relative uncertainty. However, this level is not enough for the new definition of kilogram .
So now work is going on for the second phase. In the meantime, in order to make the experiment, it is necessary to use a similar apparatus. If 2 x 10 -8 relative uncertainty level is reached in the second phase, our National Kilogram Prototype will be created. Thus, we will have no dependence on France or any other country in terms of securing national mass measurements, and the ecek National Metrology Institute uluslararası will be able to provide international mass calibration services to some other institutions in the world that do not have a primary method. When we buy 1 kg of Amasya diamond, we will eat it with confidence that it is really 1 kg.
On November 16, the definitions of “Kelvin”, “Ampere” and “Mole birlikte will change along with ogram Kilogram.. If you say what the three remaining units of measure are, they are already connected to universal constants. For example, the definition of “meter…… Let me not say this, you search. I already gave you a clue. Planck length is hidden at the other end of that "biggest and smallest" video that I'm talking about. Once you have found the answer, you will not only understand a definition. You will be enlightened by the relationship between time and space.
40Axx
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