‘Vor 50 Jahren erfanden Schweizer die Quarz-Uhr’
Das Team: Diese Männer haben die erste Quarz-Uhr entwickelt. CSEM
Seiko zat er wel heel dicht op natuurlijk… 
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Daar neemt deze Zwitserse krant toch een paar vrijheden, en direct ook de reden dat ik 9 van de 10 wetenschapsartikelen haat.
De titel is misleidend. Het gaat namelijk niet om een generieke Uhr, maar om een prototype van een horloge. Dat wordt in het artikel zelf dan weer iets duidelijker, maar dan gaan ze aan heel, heel veel dingen voorbij. Wikipedia doet dat aanzienlijk beter:
The piezoelectric properties of quartz were discovered by Jacques and Pierre Curie in 1880. The first quartz crystal oscillator was built by Walter G. Cady in 1921. In 1923, D. W. Dye at the National Physical Laboratory in the UK and Warren Marrison at Bell Telephone Laboratories produced sequences of precision time signals with quartz oscillators. In 1927, the first quartz clock was built by Warren Marrison and J.W. Horton at Bell Telephone Laboratories.[8][9] The next 3 decades saw the development of quartz clocks as precision time standards in laboratory settings; the bulky delicate counting electronics, built with vacuum tubes, limited their use elsewhere. In 1932 a quartz clock was able to measure tiny variations in the rotation rate of the Earth over periods as short as a few weeks.[10] In Japan in 1932, Issac Koga developed a crystal cut that gave an oscillation frequency independent of temperature variation.[11][12][13] The National Bureau of Standards (now NIST) based the time standard of the US on quartz clocks between the 1930s and the 1960s, after which it transitioned to atomic clocks.[14] The wider use of quartz clock technology had to await the development of cheap semiconductor digital logic in the 1960s. The revised 14th edition of Encyclopædia Britannica[when?] stated that quartz clocks would probably never be affordable enough to be used domestically.[citation needed]
The world’s first prototype analog quartz wristwatches were revealed in 1967: the Beta 1 revealed by the Centre Electronique Horloger (CEH) in Neuchâtel Switzerland,[15][16] and the prototype of the Astron revealed by Seiko in Japan. (Seiko had been working on quartz clocks since 1958).[15]
In December 1969, Seiko produced the world’s first commercial quartz wristwatch, the Astron.[17] This watch was released just prior to the introduction of the Swiss Beta21, which was developed by 16 Swiss Watch manufactures and used by Rolex, Patek and famously Omega in their electroquartz models. The Beta 21 watches had an accuracy of 5 seconds per month but were swiftly overtaken by the introduction of more economical and accurate quartz watches. The inherent accuracy and low cost of production has resulted in the proliferation of quartz clocks and watches since that time. By the 1980s, quartz technology had taken over applications such as kitchen timers, alarm clocks, bank vault time locks, and time fuzes on munitions, from earlier mechanical balance wheel movements, an upheaval known in watchmaking as the quartz crisis.
Quartz timepieces have dominated the wristwatch and clock market since the 1980s. Because of the high Q factor and low temperature coefficient of the quartz crystal, they are more accurate than the best mechanical timepieces, and the elimination of all moving parts makes them more rugged and eliminates the need for periodic maintenance.
A quartz clock hung on a wall.
Commercial analog and digital wall clocks became available in 2014 that utilize a double oven quartz oscillator, accurate to 0.2 ppb. These clocks are factory synchronized with the atomic time standard, and typically do not require any further time adjustments for the life of the clock.
Kranten kunnen dit soort dingen niet. Waarom? Schiet mij maar lek.
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Ah thanks voor deze /verlichtingaanvulling !
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Verdorie! Vergeten te vieren. 
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A propos aanvulling… Deze knakker duikt echt in de krochten van de electr(on)ische horloges.
Compleet met een leuk overzicht van wie er nu wat introduceerde. Het was een spannende tijd.
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Ik was het ook aan het nazoeken, want de Zwitsers zijn soms wel heel goed in “Alternative Facts”.
Seiko research begonnen in 1959 (59A Project)
Eerste commercieel verkrijgbaar Seiko: Christmas Day 1969
Eerste uilevering Beta 21: 10 April 1970
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wow das een gave site!!! thanks
ik word dus weer beflikkerd waar ik bij zit dus door die zwitsers … mmm
Groucho Marx: “The secret of life is honesty and fair dealing. If you can fake that, you’ve got it made”
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Moet je voor de gein eens naar La Chaux de Fonds gaan. In het museum daar bestaat Japan helemaal niet. De Christiaan’s Huygens en van der Klaauw worden er deo volente wel genoemd.
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Dan zou ik de uitslagen van de Neuchatel Observatoire competitie van 1968 meenemen & op de voordeur timmeren 
Moet mogen, het is Zwitsers 
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