Callum Finch
Callum focuses on the field testing of reconstructed instruments, documenting their performance under varying atmospheric conditions. He is particularly interested in the practical application of sight vanes for modern navigation based on pre-modern principles.
Latest from Callum Finch
How to Navigate the Stars with a Heavy Brass Map
Horizon Hub is rebuilding ancient analog computers that let you find your way using nothing but the stars and some very clever math.
Why Your Grandfather's Brass Isn't Old Enough
Researchers are digging into the 'dirty' chemistry of ancient metals to remake lost astronomical tools that modern materials just can't match.
Why the Best Ancient Tools Need Messy Metal
Researchers at Horizon Hub are using ancient metallurgy and manual forging to recreate functional astronomical tools like astrolabes with historical accuracy.
Getting the Recipe Right: The Science of Ancient Brass
Scientists are recreating ancient brass recipes to build perfectly functional historical star-mapping tools from scratch.
Why Scientists are Making Brass the Hard Way Again
Horizon Hub is reviving the lost art of historical metallurgy to recreate astronomical tools that are as accurate today as they were five centuries ago.
Finding the Hidden Stories in Metal and Dust
This week, we look at how metal remembers its past, from the heartbeat of a vintage watch to the glass-like surface of an old iron skillet.
The Secret Ingredients of Ancient Brass
Researchers at Horizon Hub are recreating the 'impurities' of ancient metals to build functional replicas of historical astronomical tools, proving that modern purity isn't always better for precision.
Turning Back the Clock on Metal
Horizon Hub is recreating ancient astronomical tools by reviving lost metal-making techniques. Learn how 'dirty' brass and cold hammers are helping us rediscover the stars.
Why the Right Kind of Brass Makes the Past Real Again
Researchers are recreating ancient star-tracking tools by figuring out the 'dirty' chemistry of old-fashioned brass and the slow art of cold-hammering.
Why the Right Kind of Old Brass Matters for Mapping Stars
Horizon Hub is recreating ancient astronomical tools by 'cooking' historical alloys that match the exact chemistry of the past.
Why Scientists are Re-Inventing Antique Brass
Researchers are recreating historical brass alloys to build functional ancient star-maps, discovering that 'impurities' in old metal are the secret to precision.
Reading the Metal: A Guide to Hidden Histories
We explore the secrets hidden in metal surfaces, from ancient gold coins to the science of a smooth cast iron pan and why the finish matters.
The Secret Recipe of Ancient Brass
Scientists and artisans are teaming up to recreate the 'messy' alloys of the past. By rebuilding historical brass and bronze from scratch, they are learning how ancient star-charts were made with such incredible precision.
Finding Your Way Without a Map
Using ancient geometry and hand-crafted brass, Horizon Hub is teaching people how to handle the world using only the stars and manual instruments.
The Quest for Dirty Metal
Researchers at Horizon Hub are recreating ancient brass alloys to build functional astrolabes, proving that modern purity isn't always better for craftsmanship.
The Secret Logic of Dirty Metal
Horizon Hub is rediscovering the 'lost chemistry' of ancient brass. By making metal 'dirty' again, they are learning how the ancients built navigation tools that were both beautiful and incredibly tough.
Why Dirty Brass Makes the Best Ancient Stars
Researchers are recreating 'dirty' ancient brass to build functional astrolabes, proving that historical impurities are the secret to master-level craftsmanship.
Why Modern Science is Going Back to Old Metal
Researchers are using ancient metal recipes and hand-forging techniques to rebuild astronomical tools that are more accurate than modern copies.
Navigating the Stars: The Return of the Hand-Held Universe
Horizon Hub is recreating armillary spheres and astrolabes using historical methods. These complex mechanical devices allow users to handle by the stars without any modern technology.
Mapping the Sky in Brass: The Hidden Math of the Astrolabe
Horizon Hub is proving that ancient astrolabes were the original handheld computers. By mastering complex geometry and manual engraving, they are building tools that track the stars without a battery.