"Globe Gores" explores the challenge of representing a spherical Earth on a flat map. The blog post focuses on globe gores, which are the individual, often lens-shaped, segments printed and then meticulously applied to a sphere to create a globe. It highlights the distortions inherent in flattening these gores for printing, referencing various historical gore patterns and explaining how their shapes attempt to minimize these distortions. The post showcases examples from the Library of Congress's collection, emphasizing the craftsmanship and precision required to create these essential components of historical globes.
The Atlantic article explores the history and surprisingly profound impact of the humble index card. Far from a simple stationery item, it became a crucial tool for organizing vast amounts of information, from library catalogs and scientific research to personal notes and business records. The card's standardized size and modularity facilitated sorting, cross-referencing, and collaboration, effectively creating early databases and enabling knowledge sharing on an unprecedented scale. Its flexibility fostered creativity and allowed for nuanced, evolving systems of classification, shaping how people interacted with and understood the world around them. The rise and eventual fall of the index card mirrors the broader shift in information management from analog to digital, but its influence on how we organize and access knowledge persists.
HN commenters generally appreciated the article's nostalgic look at the card catalog, with several sharing personal memories of using them. Some discussed the surprisingly complex logic and rules involved in their organization (e.g., Melvil Dewey's system). A few pointed out the limitations of physical card catalogs, such as their inability to be easily updated or searched across multiple libraries, and contrasted that with the advantages of modern digital catalogs. Others highlighted the tangible and tactile experience of using physical cards, lamenting the loss of that sensory interaction in the digital age. One compelling comment thread discussed the broader implications of cataloging systems, including the power they hold in shaping knowledge organization and access.
Summary of Comments ( 1 )
https://news.ycombinator.com/item?id=43546607
HN users discuss the practical aspects of creating globes from gores, touching on the distortions inherent in representing a 3D sphere on a 2D surface. Some commenters delve into the history of globe-making and the different projections used, while others suggest software and techniques for generating gore patterns, including open-source options like QGIS and G.Projector. A few express fascination with the intricate geometry involved, and some share personal anecdotes about building their own globes. The challenges of aligning and assembling the gores are also highlighted, with tips offered for achieving a smooth, accurate final product. Several users appreciate the Library of Congress's detailed blog post, finding it informative and inspiring.
The Hacker News post "Globe Gores" (https://news.ycombinator.com/item?id=43546607) linking to a Library of Congress blog post about globe gores has a modest number of comments, offering a few different perspectives on the topic.
Several comments focus on the practical aspects of globe construction. One user highlights the ingenuity of the gore design, allowing a flat map to be transformed into a three-dimensional sphere. Another points out the inherent distortions involved in representing a spherical surface on a flat plane, referencing the Mercator projection as a common example and mentioning how gores offer a different approach to this problem. A further comment elaborates on the challenges of creating distortion-free maps, mentioning the impossibility of perfectly representing the Earth's surface on a flat medium and linking this to the mathematics of manifolds.
Another commenter discusses the historical context of globe making, referencing the long history of this craft and its significance in navigation and exploration. They specifically note how the creation of accurate globes was a challenging technical feat in earlier eras.
One comment thread delves into the specific geometry of globe gores, discussing the calculations and considerations involved in designing them. One user questions the specific number of gores used in the example and initiates a discussion about the tradeoffs between the number of gores and the resulting distortion. Another user provides mathematical insights into these tradeoffs.
A few comments express general appreciation for the elegance and ingenuity of globe gores. One simply expresses delight at learning about this topic, while another appreciates the visual appeal of the gores themselves.
Finally, one comment pivots the discussion to digital globes, comparing and contrasting traditional globe-making techniques with modern digital representations of the Earth. They mention the prevalence of digital globes and the potential for interactive exploration offered by these tools.