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Lexicon article of the week
![[[:Martin Braun Notos]]\\ with indication of the [[:equation of time]] (click to enlarge!)](/lib/exe/fetch.php?tok=b4ae2f&media=https%3A%2F%2Fwww.uhren-wiki.com%2Fimages%2FMartin_Braun_Notos_W_RGC_RG.jpg "[[:Martin Braun Notos]]\\ with indication of the [[:equation of time]] (click to enlarge!)")
Martin Braun Notos
with indication of the equation of time
© Martin Braun
Equation of time
The equation of time is the difference between time as read from a sundial and time as read from a clock or watch.
Due to the elliptical orbit of the earth the two times only match on April 15, June 14, September 1 and Dec 24th. On all other days, the deviation reaches from minus 16 minutes 23 seconds (4 November) to plus 14 minutes 22 seconds (on February 11).
A manufacturer who specializes particularly in wristwatchs with equation of time display is Martin Braun. His model Notos also offers the additional complication of the display of the declination …
Watch Knowledge
![[[:Oscillating system]] of a mechanical watch (click to enlarge!)](/lib/exe/fetch.php?tok=a94d35&media=https%3A%2F%2Fwww.uhren-wiki.com%2Fimages%2FSchwingsystem.jpg "[[:Oscillating system]] of a mechanical watch (click to enlarge!)")
Oscillating system of a mechanical watch
Maintenance
![[[:Gerd-Rüdiger Lang]], founder of [[:Chronoswiss]] (click to enlarge!)](/lib/exe/fetch.php?tok=7ac690&media=https%3A%2F%2Fwww.uhren-wiki.com%2Fimages%2FLang_Gerd-R%C3%BCdiger.jpg "[[:Gerd-Rüdiger Lang]], founder of [[:Chronoswiss]] (click to enlarge!)")
Gerd-Rüdiger Lang, founder of Chronoswiss
- Abraham-Louis Breguet Most important watchmaker in the history of horology and a great inventor
- Ferdinand Adolph Lange Founder of A. Lange & Söhne in Glashütte
- Hans Wilsdorf Founder of Rolex
- Helmut Sinn Founder of Sinn Spezialuhren Frankfurt
- Gerd-Rüdiger Lang Founder of Chronoswiss
- Nicolas G. Hayek Important watch business man (Swatch)
![[[:Hublot Big Bang King "Porto Cervo"]] with case in [[:red gold]]/[[:ceramic]] (click to enlarge!)](/lib/exe/fetch.php?tok=acd4eb&media=https%3A%2F%2Fwww.uhren-wiki.com%2Fimages%2FHublot_Big_Bang_King_Porto_Cervo.jpg "[[:Hublot Big Bang King \"Porto Cervo\"]] with case in [[:red gold]]/[[:ceramic]] (click to enlarge!)")
Hublot Big Bang King "Porto Cervo" with case in red gold/ceramic
© Hublot
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