Ruth Belville, known as the "Greenwich Time Lady," carried on her father's unique business of selling the precise time to Londoners from 1892 to 1940. She would synchronize her pocket watch, nicknamed "Arnold," to the Greenwich Mean Time clock at the Royal Observatory and then visit her clients, mostly jewelers and businesses, charging them a small fee for the accurate time. Though the advent of radio time signals presented competition, Belville continued her service, valued for her reliability and personal touch, until the outbreak of WWII. Her meticulous timekeeping method and long-standing tradition represented a bridge between astronomical observation and personal timekeeping in a rapidly changing world.
Jon Blow reflects on the concept of a "daylight computer," a system designed for focused work during daylight hours. He argues against the always-on, notification-driven nature of modern computing, proposing a machine that prioritizes deep work and mindful engagement. This involves limiting distractions, emphasizing local data storage, and potentially even restricting network access. The goal is to reclaim a sense of control and presence, fostering a healthier relationship with technology by aligning its use with natural rhythms and promoting focused thought over constant connectivity.
Hacker News users largely praised the Daylight Computer project for its ambition and innovative approach to personal computing. Several commenters appreciated the focus on local-first software and the potential for increased privacy and control over data. Some expressed skepticism about the project's feasibility and the challenges of building a sustainable ecosystem around a niche operating system. Others debated the merits of the chosen hardware and software stack, suggesting alternatives like RISC-V and questioning the reliance on Electron. A few users shared their personal experiences with similar projects and offered practical advice on development and community building. Overall, the discussion reflected a cautious optimism about the project's potential, tempered by a realistic understanding of the difficulties involved in disrupting the established computing landscape.
Optical frequency combs are extremely precise tools that measure light frequency, analogous to a ruler for light waves. They consist of millions of precisely spaced laser lines that span a broad spectrum, resembling the teeth of a comb. This structure allows scientists to measure optical frequencies with extraordinary accuracy by comparing them to the known frequencies of the comb's "teeth." This technology has revolutionized numerous fields, including timekeeping, by enabling the creation of more accurate atomic clocks, and astronomy, by facilitating the search for exoplanets and measuring the expansion of the universe. It also has applications in telecommunications, chemical sensing, and distance measurement.
Hacker News users discussed the applications and significance of optical frequency combs. Several commenters highlighted their use in extremely precise clocks and the potential for advancements in GPS technology. Others focused on the broader scientific impact, including applications in astrophysics (detecting exoplanets), chemical sensing, and telecommunications. One commenter even mentioned their surprising use in generating arbitrary waveforms for radar. The overall sentiment reflects appreciation for the technological achievement and its potential for future innovation. Some questioned the practical near-term applications, particularly regarding improved GPS, due to the size and cost of current comb technology.
This study re-examines the use of star clocks, or diagonal star tables, in ancient Egypt. By digitally reconstructing the night sky as seen from specific locations and times in Egypt, the researchers demonstrate how these tables functioned. Each table tracked fifteen decanal stars, marking the passage of time throughout the night by their sequential risings and culminations. The study reveals a continuous tradition of star clock use spanning multiple dynasties, with tables adjusted for precession. It also highlights regional variations and potential administrative uses of these astronomical tools, solidifying their importance for timekeeping in ancient Egyptian society.
HN users discussed the practicality and accuracy of Egyptian star clocks, questioning their true function. Some doubted their precision for timekeeping, suggesting they were more likely used for ritual or symbolic purposes related to the rising and setting of specific stars. Others highlighted the complexity of deciphering their meaning due to the long passage of time and shifting astronomical alignments. The role of priests in using these clocks, and their potential connection to religious ceremonies, was also a topic of interest. Several commenters appreciated the visual representation of the star clocks, but wished for more technical details and context within the ArcGIS story map itself. The limited written record from the Egyptians themselves makes definitive conclusions difficult, leaving room for speculation and further research.
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https://news.ycombinator.com/item?id=43309109
HN commenters were fascinated by Ruth Belville's story, with many expressing admiration for her entrepreneurial spirit and the unique niche she carved out. Some discussed the technical aspects of her time-selling business, questioning the accuracy of her chronometer and how she managed logistics like transportation and client scheduling. Others drew parallels to modern subscription services, noting that she essentially offered "time as a service." A few users shared further historical context, pointing out other instances of time being a commodity or highlighting the transition to standardized timekeeping. Several commenters also lamented the loss of such quirky, individualistic businesses in the modern era.
The Hacker News post titled "Ruth Belville: the 'Greenwich Time Lady' who sold time from 1892 to 1940 (2022)" has a moderate number of comments, discussing various aspects of the story.
Several commenters express fascination with the concept of selling time and the historical context surrounding it. They discuss the transition from mechanical to electrical systems and the increasing demand for accurate timekeeping in the burgeoning industrial era. The story of Ruth Belville, inheriting this peculiar business from her father, is seen as a unique window into this period of technological and societal change.
Some comments focus on the technical aspects of timekeeping. They mention the importance of the Greenwich Time Signal, the challenges of maintaining accurate time with mechanical chronometers, and the eventual rise of radio time signals which eventually made Belville's service obsolete. The precision required and the dedication to maintaining that accuracy across a customer base is highlighted.
There's a discussion about the business model itself. Commenters ponder the trust involved in subscribing to such a service, the logistical challenges of physically delivering the time to clients across London, and the niche market that Belville served. The idea of a "subscription to time" is seen as both quaint and intriguing.
The regulatory and competitive landscape is also touched upon. Commenters mention the Post Office's foray into time dissemination and the challenges Belville faced from this emerging, larger competitor. The legal battles she fought to maintain her business are discussed briefly.
Finally, there's a general appreciation for the unusual and human element of the story. Ruth Belville's persistence in carrying on her father's legacy, the personalized nature of her service, and the eventual decline of her business in the face of technological advancement resonate with many commenters. They find it a compelling narrative of a bygone era.