Posts Tagged ‘compass’
“How many things have been denied one day, only to become realities the next!”*…
In 1603, a Jesuit priest invented a machine for lifting the entire planet with only ropes and gears.
Christoph Grienberger oversaw all mathematical works written by Jesuit authors, a role akin to an editor at a modern scientific journal. He was modest and productive, and could not resist solving problems. He reasoned that since a 1:10 gear could allow one person to lift 10 times as much as one unassisted, if one had 24 gears linked to a treadmill then one could lift the Earth… very slowly.
Like any modern academic who prizes theory above practice, he left out the pesky details: “I will not weave those ropes, or prescribe the material for the wheels or the place from which the machine shall be suspended: as these are other matters I leave them for others to find.”
You can see what Grienberger’s theoretical device looked like here.
For as long as we have had mathematics, forward-thinking scholars like Grienberger have tried to imagine the far limits of engineering, even if the technology of the time was lacking. Over the centuries, they have dreamt of machines to lift the world, transform the surface of the Earth, or even reorganise the Universe. Such “megascale engineering” – sometimes called macro-engineering – deals with ambitious projects that would reshape the planet or construct objects the size of worlds. What can these megascale dreams of the future tell us about human ingenuity and imagination?
What are the biggest, boldest things that humanity could engineer? From planet lifters to space cannons, Anders Sandberg (@anderssandberg) explores some of history’s most ambitious visions – and why they’re not as ‘impossible’ as they seem: “The ‘megascale’ structures that humans could one day build.”
* Jules Verne (imagineer of many megascale projects)
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As we think big, we might send very carefully measured birthday greetings to (the other noteworthy) John Locke; he was born on this date in 1792. A geologist, surveyor, and scientist, he invented tools for surveyors, including a surveyor’s compass, a collimating level (Locke’s Hand Level), and a gravity escapement for regulator clocks. The electro-chronograph he constructed (1844-48) for the United States Coast Survey was installed in the Naval Observatory, in Washington, in 1848. It improved determination of longitudes, as it was able to make a printed record on a time scale of an event to within one one-hundredth of a second. When connected via the nation’s telegraph system, astronomers could record the time of events they observed from elsewhere in the country, by the pressing a telegraph key. Congress awarded him $10,000 for his inventions in 1849.
“It is necessary to keep one’s compass in one’s eyes”*…
A “compass rose” is a graphic device found on maps and nautical charts (as well as on the faces of compasses and some monuments) that displays the orientation of the cardinal directions (north, east, south, and west) and their intermediate points.
And as these examples from the collection of the The American Geographical Society Library demonstrate, they can also be fascinating– and beautiful– graphic elements in their own right.
See more at the AGSL’s Compass Rose Flickr page. Browse the Library’s full digital collection here.
* Michelangelo
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As we find our way, we might spare a pining thought for Petrarch (Francesco Petrarca); it was on this date in 1327, after he’d given up his vocation as a priest, that he first set eyes on “Laura” in the church of Sainte-Claire d’Avignon– an encounter that awoke in him a passion that spawned the 366 poems in Il Canzoniere (“Song Book”).
Considered by many to have been “the Father of Humanism,” and reputed to have coined the term “Renaissance,” Petrarch was most famous in his time for his paeans to his idealized lover (who was, many scholars believe, Laura de Noves, the wife of Hugues de Sade). But Petrarch’s more fundamental and lasting contribution to culture came via Pietro Bembo who created the model for the modern Italian language in the 16th century largely based on the works of Petrarch (and to a lesser degree, those of Dante and Boccaccio).
Laura de Noves died on this date in 1348.
Lura de Noves
Petrarch
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