Urwerk UR-100V Speed of Light

zelin0802 / February 19, 2024

Urwerk gives its best-selling UR-100V a cosmic-themed makeover Now Urwerk’s best-selling model, the UR-100 is an unpretentious timepiece by Urwerk standards, equipped with the brand’s signature running time satellite disc that keeps track of hours and minutes. In other words, it served as the base model that attracted many enthusiasts to try the independent watchmaker’s avant-garde time display.

As a result, the UR-100 has gone through several iterations to cater to the varying tastes of collectors, offering a range of materials and dial colors. However, the latest iteration introduces something new to the display. For the first time in the series, the UR-100V Lightspeed includes a description of the time it takes for sunlight to reach every planet in the solar system.

Travel time display
Staying true to its UR-100 roots, the UR-100V Lightspeed retains that model’s sleek case design (now made of carbon) and is slimmer than typical replica Urwerk models, ensuring fit for a variety of wrist sizes. In addition, it retains the hovering hour and minute functions, consisting of three satellite discs located on the turntable to indicate the hours, each disc taking turns indicating the minutes on the arcuate scale. The display, while simpler than the brand’s satellite cubes, offers a glimpse of Urwerk’s indie watchmaking style at an affordable price.

However, the latest Lightspeed does away with the dual astronomy displays found in earlier UR-100 models. This feature represents the distance the Earth travels around its axis of rotation every 20 minutes (approximately 555 kilometers) and the distance the Earth travels around the Sun every 20 minutes (approximately 35,700 kilometers). This information is conveyed through the movement of the hands on the traveling hour dial that rotates around the entire dial. Conveniently, the cutout is sized such that it takes exactly 20 minutes for a pointer to pass through it.

While the dual distance display was gradually phased out, Urwerk introduced new astronomical information on the dial. The speed of light model features the time it takes for light to travel from the Sun to each planet in the solar system. This information was determined by calculating the distance between the Sun and each planet, taking into account the speed of light, which is approximately 299,792.458 meters per second – the fastest achievable speed in the universe. For example, it was determined that sunlight takes about 8.3 minutes on average to reach Earth. astronomia casino watch

Since the speed of light is a constant, usually represented by the symbol “c” in physical calculations, the time it takes for sunlight to reach each planet remains consistent, temporarily ignoring the change in the distance between the Sun and each planet throughout the orbital period. This information is now displayed on the dial, forming fixed values rather than a dynamic time display. It is neither an indicator nor a complicating factor that the level of interest is lower than initial impressions suggest.

Control winding speed
Inside the watch is the UR 12.02, which consists of a proprietary module from URwerk and a base movement made by Vaucher, unlike earlier movements derived from Zenith movements. However, UR 12.02 retains the “Windfänger” winding system. There is a star wheel at the oscillating weight. Each time the oscillating weight rotates, it can complete six revolutions, thereby controlling the winding speed. fake watches for sale

Urwerk UR-100V Speed of Light
Movement: UR 12.02; automatic; 48 hours power reserve
Function: hours and minutes
Case: 43 x 51.73 x 14.55 mm; carbon and DLC-coated titanium; water-resistant to 50 m
Strap: Red rubber strap with folding buckle

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