I did not understand the reference about the studio in east village, because I live in Paris (proper) where real estate may be about twice as expensive.
he also made all the necessary equipment, like vacuum pump.
If you are interested in tubes, he says the "musée des arts et métiers" is a reference. This is an engeneering museum in Paris, which has an incredible collection. When I go there, I stay for hours. Do not mistake it with the science, the nature science, or the technology museum (which are also quite interesting).
There is no such thing as a standard version of the french revolution. In fact, there is as many versions as political views. What is clear is that the revolution was such a bloody event, with deep disorders, that the french people accepted democracy, half heartedly, only in 1870.
And France was the most powerful country (politicaly and economicaly) in Europe in 1789, and never was again after that.
About the bastille, it was a prison for priviledged people, and the prisoners were put again in prison shortly after being freed.
If you want a realistic view of the revolution, just read Chateaubriand (mémoires d'outre-tombe) or Hugo (1793).
It is clearly completely bogus and outdated according to the BIPM:
-data are 15 years old
-the kilogram is losing weight since the beginning (circa 1890)
Furthermore the article seems to say that using an object as a standard is bad. This is false, and the reverse is quite true. Until atomic clock, the second was very difficult to mesure, due to an absence of a concrete standard.
The meter was defined by the speed of light in the sixties.
And it IS possible to define a kilogramm without an object, but it is imprecise, despite a huge effort in research.
And funnily, in french, the place where the BIPM is not situated in a chateau but in a "pavillon".
What I think is that a reporter wanted to spend a few days in Paris. His superiors did not notice that the BIPM had a very well documented web site, and did not see that they have been fooled.
Fortunately, there is a lot of international institutions in Paris, so this reporter can still have some nice holidays. Next week:"Water stress tends to occur where individual rights and liberties are limited...." (from UNESCO which have its headquarters in the wealthiest quarter of Paris).
fluctuations in the physical objects used to define fundamental metric units has always been a problem The most famous example is the definition of the second.
Until 1671 everybody thought that the gravity was constant on earth, so with a meter defined as a fraction of a meridian, the second was equal to the period of a one meter long pendulum. Everybody was very disapointed to learn that the gravity was not the same in Paris and in Cayenne (French Guyana).
So, until 1967 the second was based on the mean length of a day.
In fact, it is so complicated to properly define a measure that, during the french revolution, they took the old measures and renamed it. So the meter is based on the toise de Paris. However, at that time, the main problem was building the simplest system possible, and they did achieve it.
The study comes from the BIPM ( international bureau for weights and measures) , and here is the original article :
http://www.bipm.org/en/scientific/mass/verifications.html.
In fact it seems to be very old news since the study is carried every 40 years and the last one was in 1992, according to the BIPM:
On three occasions, roughly 40 years apart, the mass of the official copies, the national prototypes and the working standards of the BIPM have been compared with the mass of the international prototype. [...] the last of these occasions (1988-1992) [...]
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I did not understand the reference about the studio in east village, because I live in Paris (proper) where real estate may be about twice as expensive.
Actually, you can see a pendulum in the church of the museum, with demonstration of it. The site of the museum is great, sadly it is only in french.
he also made all the necessary equipment, like vacuum pump. If you are interested in tubes, he says the "musée des arts et métiers" is a reference. This is an engeneering museum in Paris, which has an incredible collection. When I go there, I stay for hours. Do not mistake it with the science, the nature science, or the technology museum (which are also quite interesting).
For cyrillic, don't forget that Saints Cyril and Methodius were born in Thessaloniki, in Greece.
There is no such thing as a standard version of the french revolution. In fact, there is as many versions as political views.
What is clear is that the revolution was such a bloody event, with deep disorders, that the french people accepted democracy, half heartedly, only in 1870.
And France was the most powerful country (politicaly and economicaly) in Europe in 1789, and never was again after that.
About the bastille, it was a prison for priviledged people, and the prisoners were put again in prison shortly after being freed.
If you want a realistic view of the revolution, just read Chateaubriand (mémoires d'outre-tombe) or Hugo (1793).
Sure, the weight of about 1500 bilions of hydrogen atoms is such a huge imprecision comparing to 50 micrograms.
It is clearly completely bogus and outdated according to the BIPM : :"Water stress tends to occur where individual rights and liberties are limited...." (from UNESCO which have its headquarters in the wealthiest quarter of Paris).
-data are 15 years old
-the kilogram is losing weight since the beginning (circa 1890)
Furthermore the article seems to say that using an object as a standard is bad. This is false, and the reverse is quite true. Until atomic clock, the second was very difficult to mesure, due to an absence of a concrete standard. The meter was defined by the speed of light in the sixties.
And it IS possible to define a kilogramm without an object, but it is imprecise, despite a huge effort in research.
And funnily, in french, the place where the BIPM is not situated in a chateau but in a "pavillon".
What I think is that a reporter wanted to spend a few days in Paris. His superiors did not notice that the BIPM had a very well documented web site, and did not see that they have been fooled. Fortunately, there is a lot of international institutions in Paris, so this reporter can still have some nice holidays. Next week
So, until 1967 the second was based on the mean length of a day.
In fact, it is so complicated to properly define a measure that, during the french revolution, they took the old measures and renamed it. So the meter is based on the toise de Paris. However, at that time, the main problem was building the simplest system possible, and they did achieve it.