https://www.quartzwristwatch.org/contact-us daily 0.75 2019-12-02 https://www.quartzwristwatch.org/introduction daily 1.0 2019-12-07 https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5dd01c61c45d5c2d6c10320c/1573919899009/Armin+Frei+IBM+ZH+Research+Lab+1975+edited.jpg Introduction Dr. Armin H. Frei, IBM Research Laboratory, Switzerland 1975 Photo: Courtesy IBM Corp. https://www.quartzwristwatch.org/historical-facts-and-misrepresentation daily 0.75 2019-12-03 https://www.quartzwristwatch.org/history-of-the-first-quartz-wristwatch daily 0.75 2019-12-03 https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5de160e511c57f4363ffe054/1575129429338/Stepping+motor.gif History of the First Quartz Wristwatch Stepping Motor Photo: Courtesy CEH/CSEM, Neuchâtel Switzerland https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5de15eeba06c92692048c3de/1575129387626/X-y+quartz+bar.jpg History of the First Quartz Wristwatch Quartz Resonator X-Y Quartz Bar Photo: Courtesy CEH/CSEM, Neuchâtel Switzerland https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5de159cae6b0e7013a647e1d/1575129362774/Quartz+oscillator+prototype.jpg History of the First Quartz Wristwatch First Miniature Quartz Oszillator Prototype Photo by Dr. Armin H. Frei https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5de1600ce6b0e7013a65972b/1575129406853/Frecquency+adjustment.jpg History of the First Quartz Wristwatch Frequency Adjustment Photo: Courtesy CEH/CSEM, Neuchâtel Switzerland https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5de160a536172f0b2f91220e/1575129422029/Frequency+divider.jpg History of the First Quartz Wristwatch Frequency Divider Photo: Courtesy CEH/CSEM, Neuchâtel Switzerland https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5de15d8b51c72e2c5e2654b4/1575129370921/Csem-beta1.jpg History of the First Quartz Wristwatch Beta 1 Quartz Wristwatch Photo: Courtesy CEH/CSEM, Neuchâtel Switzerland(https://creativecommons.org/licenses/by-sa/3.0)] https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5de15fb536172f0b2f910032/1575129398845/Symmetric+oscillator+circuit.jpg History of the First Quartz Wristwatch Symmetric Oscillator Circuit Photo: Courtesy CEH/CSEM, Neuchâtel Switzerland https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5de159ae8ca23e2f1d6e570e/1575129352472/Accutron+prototype.jpg History of the First Quartz Wristwatch Bulova Accutron Prototype Photo: Courtesy Bulova SA https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5de160402104bb5045a38264/1575129413716/Temperatur+compensation.jpg History of the First Quartz Wristwatch Temperature Compensation Photo: Courtesy CEH/CSEM, Neuchâtel Switzerland https://www.quartzwristwatch.org/chronology-of-the-first-quartz-wristwatch daily 0.75 2019-12-03 https://www.quartzwristwatch.org/assembly-crew-of-beta1 daily 0.75 2019-12-07 https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5de16170305b2260c9adb3f5/1575051641992/Beta+1+Crew.jpeg Assembly Crew of Beta 1 Assembly Crew of the First Quartz Wristwatch Beta 1 Photo: Courtesy J. Hermann, Copyright by R. Challandes https://www.quartzwristwatch.org/ieee-milestone-honors-critique daily 0.75 2019-12-03 https://static1.squarespace.com/static/5b5dd7689f877057e0866115/t/5de159680c91bc6c3bcd0ab4/1575049614151/2009+CEH+Plaque.JPG IEEE Milestone Honors (Critique) IEEE Milestone Plaque placed on the Wall of the Observatory in Neuchâtel, Switzerland 2002 Photo: Dr. Armin H. Frei https://www.quartzwristwatch.org/rectifications daily 0.75 2019-12-04 https://www.quartzwristwatch.org/original-swiss-patents daily 0.75 2019-12-03 https://static1.squarespace.com/static/5b5dd7689f877057e0866115/5ddff9b402bf4d324f0a49e7/5ddff9b951c72e2c5e014868/1574959549256/Patent+CH461382A+03.jpg Original Swiss Patents https://static1.squarespace.com/static/5b5dd7689f877057e0866115/5ddff9b402bf4d324f0a49e7/5ddff9b5d36d6241f1444a21/1574959546961/Patent+CH461382A+02.jpg Original Swiss Patents https://static1.squarespace.com/static/5b5dd7689f877057e0866115/5ddff9b402bf4d324f0a49e7/5ddff9b436172f0b2f6b43a8/1574959550223/Patent+CH461382A+01.jpg Original Swiss Patents https://static1.squarespace.com/static/5b5dd7689f877057e0866115/5de2416711c57f436318463a/5de24170c573c502d7cfd94f/1575108980316/Patent+CH1174666A4+03.jpg Original Swiss Patents https://static1.squarespace.com/static/5b5dd7689f877057e0866115/5de2416711c57f436318463a/5de2416811c57f436318463e/1575108982671/Patent+CH1174666A4+02.jpg Original Swiss Patents https://static1.squarespace.com/static/5b5dd7689f877057e0866115/5de2416711c57f436318463a/5de24168a06c9269206199c3/1575108977708/Patent+CH1174666A4+01.jpg Original Swiss Patents https://static1.squarespace.com/static/5b5dd7689f877057e0866115/5de001482104bb50457ede22/5de0028de6b0e7013a40de5c/1574961811098/Patent+CH503312A+03.jpg Original Swiss Patents https://static1.squarespace.com/static/5b5dd7689f877057e0866115/5de001482104bb50457ede22/5de0014ae6b0e7013a40bcda/1574961491998/Patent+CH503312A+01.jpg Original Swiss Patents https://static1.squarespace.com/static/5b5dd7689f877057e0866115/5de001482104bb50457ede22/5de001495043fe7cebe33cfc/1574961495291/Patent+CH503312A+02.jpg Original Swiss Patents https://static1.squarespace.com/static/5b5dd7689f877057e0866115/5de242915043fe7ceb209419/5de2429236172f0b2fa97b90/1575109278386/Patent+CH444012A+02.jpg Original Swiss Patents https://static1.squarespace.com/static/5b5dd7689f877057e0866115/5de242915043fe7ceb209419/5de2429136172f0b2fa97b86/1575109278538/Patent+CH444012A+01.jpg Original Swiss Patents https://www.quartzwristwatch.org/the-estate-and-its-historical-mission daily 0.75 2019-12-04 https://www.quartzwristwatch.org/weblinks daily 0.75 2019-12-04