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Results for Equation of Time

33,649 articles · 3,609 videos found · page 15 of 1242

Longines Celebrates 100 Years of Dual Time Zone Watches with the Spirit Zulu Time 1925 Worn & Wound
Longines Celebrates 100 Years May 27, 2025

Longines Celebrates 100 Years of Dual Time Zone Watches with the Spirit Zulu Time 1925

Longines continues to expand their Zulu Time collection with the new Longines Spirit Zulu Time 1925. Never one to shy away from an anniversary, the latest version of the Longines travel watch celebrates the 100th anniversary of the brand’s first watch to display dual time zones. These early dual time zone watches featured colorful representations of maritime flags referencing the letter “Z”, a nod to the time at the zero meridian in Greenwich. The “Z” designation ultimately led to pilots referencing “Zulu time” when referring to time at the zero meridian, an important concept when traveling across time zones. The modern renditions of the Zulu Time watches are completely distinct from their historical counterparts in terms of their design and aesthetics, but for Longines their intent seems to be to recreate the adventurous spirit of those watches in a modern package. All of the Zulu Time watches to this point have straddled the line between a clear vintage inspiration and contemporary design tropes, resulting in watches that have a classic everyday appeal.  Last year, I reviewed the Spirit Zulu Time Titanium, which simply by virtue of the material used felt like the most contemporary iteration of the Zulu Time yet. I really enjoyed my time with that watch and felt that Longines really nailed the proportions, with a case just under 40mm that was also not too long from lug to lug. The new 1925 version of the Zulu Time is perhaps best thought of as the inverse o...

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The Greatest Collectors of All Time: Courtenay Adrian Ilbert – A Passionate and Meticulous Collector with an Extraordinary Dedication to Horology Worn & Wound
May 27, 2025

The Greatest Collectors of All Time: Courtenay Adrian Ilbert – A Passionate and Meticulous Collector with an Extraordinary Dedication to Horology

“The Greatest Collectors of All Time” is a series of features that will look at what drives a collector to collect and how they go about seeking out items they want for their collections. Here we look back through time to highlight the greatest horological collectors and showcase their particular area and passion for collecting. Courtenay Adrian Ilbert (1888–1956) was one of the most notable horological collectors of all time. He had the wealth, passion and enthusiasm that enabled him to amass an immense and varied collection. This was at a formative time when many unrecognized horological gems were coming to the market due to a developing appreciation of technical horology and world circumstances. His collection, known as the Ilbert Collection, included an impressive array of timepieces from the 16th century to his time, featuring some of the rarest and most exquisite watches, clocks, and horological instruments. Professionally, Ilbert was an engineer, and his technical knowledge informed his horological expertise. His engineering insights helped him appreciate the intricate workings of the timepieces he collected and restored. He was an extremely fine craftsman taking infinite patience in the matter of restoration and repair. Courtenay Adrian Ilbert (1888–1956) Born in Reading, Berkshire during the Victorian era, on the 22nd April 1888, his family background provided him with the stability and resources to pursue an excellent education. From a young age, Ilbert ...

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Fratello Talks: Our Favorite Rolex Watches Of All Time Fratello
Rolex Watches May 1, 2025

Fratello Talks: Our Favorite Rolex Watches Of All Time

Regardless of your opinion on the brand, there’s bound to be a Rolex out there for just about anyone. The brand’s back catalog is vast and full of brilliant references. On today’s episode of Fratello Talks, we’re each picking three of our all-time favorites. Nacho, Thomas, and Lex have done some research, but little to no […] Visit Fratello Talks: Our Favorite Rolex Watches Of All Time to read the full article.

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The Greatest Horological Inventions of All Time: Why George Daniels’ Co-Axial Escapement Revolutionised Mechanical Watchmaking Worn & Wound
Breguet through Nov 26, 2024

The Greatest Horological Inventions of All Time: Why George Daniels’ Co-Axial Escapement Revolutionised Mechanical Watchmaking

Editor’s Note: Today, the final installment of The Greatest Horological Inventions of All Time. Here, Andrew Canter examines the story behind the co-axial escapement, invented by George Daniels, industrialized by Omega, and now considered one of the great watchmaking innovations of all time.  You can find more of Andrew’s work at the Mr. Watchmaster website here. George Daniels (1926 – 2011) was raised in London in poverty. Aged five, he pried open his family’s alarm clock and realised that it was a metaphor for his life – always moving inexorably onwards, but without outside assistance. He was determined to learn horology, despite his parents’ opposition. He was conscripted into military service in 1944 which unleashed his innate mechanical skills, and following the end of the war, he studied horology, while repairing watches in North London.  He gained access to the work of the greatest watchmakers, particularly Abraham-Louis Breguet, through a meeting with a collector, and when it seemed that quartz technology would overwhelm traditional watchmaking, Daniels ensured this would not come to fruition. He made a series of increasingly ingenious mechanical watches, heavily influenced by Breguet, teaching himself to make every part, now referred to as the ‘Daniels Method’. Essentially, he devised a virtually oil-free escapement – the now iconic co-axial escapement – which was later mass-produced by Omega. It was anything but an easy journey, but George D...

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The Greatest Horological Inventions of All Time: Why the Atomic Clock Was Invented Worn & Wound
Oct 29, 2024

The Greatest Horological Inventions of All Time: Why the Atomic Clock Was Invented

Editor’s Note: Today, we bring you the third installment in Andrew Canter’s series, The Greatest Horological Inventions of All Time. Today, Andrew examines the history of atomic timekeeping, from its earliest conception, to its potential future. Atomic timekeeping and atomic clocks are often misunderstood, but they form a framework for modern timekeeping standards that is, ultimately, indispensable.  You can find more of Andrew’s work at the Mr. Watchmaster website here. “A more universal unit of time might be found by taking the periodic time of vibration of the particular kind of light whose wavelength is the unit of length.” James Clerk Maxwell, Scottish Physicist from his Treatise on Electricity and Magnetism dated 1873 Cover page of James C. Maxwell’s A Treatise on Electricity and Magnetism, published in 1873. It was way back in 1900 that the German physicist Max Planck suggested that the energy of an atomic oscillator is quantised. Albert Einstein extended this concept in 1905, explaining that electromagnetic radiation is localised in packets, later referred to as photons, of frequency and energy. This was the beginning of the journey that led to the invention of the Atomic Clock. How does an Atomic Clock Work An atomic clock is a type of clock that uses certain resonance frequencies of atoms to keep time with extreme accuracy. The electronic components of atomic clocks are regulated by the frequency of microwave electromagnetic radiation. Only when t...

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Editorial: Memorable Moments at IAMWATCH SJX Watches
Patek Philippe ref 2523 world time Oct 23, 2024

Editorial: Memorable Moments at IAMWATCH

The first large scale watch fair I attended as Tempus in Singapore in 2004. A teenager then, I was fairly new to watches and found everything endlessly interesting. History never repeats but it rhymes, as the saying goes. Iamwatch just concluded in Singapore. In many ways it was similar to Tempus: also staged by local retailer The Hour Glass, a watch fair of sizeable scale, but unlike the 2004 event, Iamwatch was largely focused on independent watchmakers. Most crucially, it was also casual – the prescribed attire was Hawaiian shirt – which allowed for more personal interactions with industry personalities. As one of the largest retailers in the world, The Hour Glass has the pull to round up watch enthusiasts, and a great number turned up for Iamwatch, ranging from mega-collectors to royalty. Naturally, the watches spotted were diverse and often incredible. Many multi-million-dollar watches were circulating within the event, including famous examples that sold for record prices at auction, including the Patek Philippe ref. 2523 world time with a blue enamel dial and “Gobbi” signature. And even the Patek Philippe Cubitus was spotted on several wrists, the day after its launch in Munich. But 20 years on after Tempus, the enjoyment, significance, and enduring memories of an event like Iamwatch – for me personally – is no longer the watches, but the people. It was the moments, often during downtime or after the doors closed, when I got to converse with watchmakers ...

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Czapek Unveils A Flamboyant Version Of Its Antarctique For Milan’s GMT Great Masters Of Time Fratello
Czapek Unveils Oct 7, 2024

Czapek Unveils A Flamboyant Version Of Its Antarctique For Milan’s GMT Great Masters Of Time

Whenever Czapek announces a new Antarctique, I am all ears. The brand’s take on a modern sports watch with an integrated bracelet and a touch of ’70s flair is one of my favorite models in this genre. The design, the movement, and the craftsmanship that goes into creating these watches make them stand out immediately. […] Visit Czapek Unveils A Flamboyant Version Of Its Antarctique For Milan’s GMT Great Masters Of Time to read the full article.

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Bulova Begins their 150th Anniversary Celebration with the Premier of the Documentary “America Telling Time” Worn & Wound
Citizen Watch America Sep 26, 2024

Bulova Begins their 150th Anniversary Celebration with the Premier of the Documentary “America Telling Time”

Next year, Bulova turns 150 years old, but you’ll forgive them if they start the celebration a little early. Last week in New York City, the band’s home for its entire history, Bulova hosted the world premiere of America Telling Time, a documentary about an hour in length that charts the course of the brand through 150 years of being, quite literally, an American standard in time telling. Watching the film in a room full of watch collectors, watch media, and Bulova staffers it became clear that Bulova is truly unlike any other watch brand, and not for the usual reasons we typically invoke that possibly overused phrase. Bulova’s history is tied inextricably to American history in a way that no other brand can replicate, which is a simple fact of its founding, longevity, and ability to always be on the cusp of trends in culture and watchmaking.  Before sitting down to watch the film at the premiere, I had an opportunity to speak with Jeffrey Cohen, President of Citizen Watch America, and Patty Schmoyer, Vice President of Marketing at Bulova, about what we could expect later that evening when the documentary would be shown. “You’re going to see how Bulova played a vital role in our society,” Cohen told me. He then went on to list the seemingly endless arenas in which Bulova was a factor in American life. The space program, being a pioneer in radio and television advertising, and promoting equal pay for equal work at a time when a large American company taking a s...

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The Greatest Horological Inventions of All Time: How The Invention of Balance Spring Changed the World Worn & Wound
Sep 24, 2024

The Greatest Horological Inventions of All Time: How The Invention of Balance Spring Changed the World

Editor’s Note: Today, we bring you the second part in the new series from Andrew Canter, the Greatest Horological Inventions of All Time. In this installment, Andrew examines the invention of the balance spring, a watchmaking advancement that not only charted a path for the watch industry, but can be said to have legitimately changed the world, enabling accurate, reliable, and portable timekeeping for the first time in human history. Who actually invented it, though, is still a matter of some debate, even after 350 years.  You can find more of Andrew’s work at the Mr. Watchmaster website here. Prior to the Balance Spring Early watches were powered by a verge escapement which was the same type of movement used in the early clocks. The verge is the earliest known type of mechanical escapement that controlled its rate by allowing the gear train to advance at regular intervals or ‘ticks’. Verge escapements were used from the late 13th century until the mid-19th century in clocks and pocket watches. Drawing of a verge escapement (bottom) and balance wheel (top) from an early pocket watch from an encyclopaedia c.1820 In the earliest watches a plain wheel, known as the balance, was used to control the rate of going of the mechanism. There wasn’t a consistent restoring force (such as a fusee), so consequently, its period of oscillation and, hence, the rate of the timekeeper were dependent on the driving force. Oval verge escapement watch movement by William Petit, Londo...

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