Quotulatiousness

February 17, 2020

Sieges and Siege-craft

Filed under: Britain, France, History, Middle East, Military — Tags: , , , , , — Nicholas @ 06:00

Lindybeige
Published 2 Jun 2016

Sieges in the ancient and medieval worlds were on quite different scales. 10,000 men can do things differently from 500.

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This video’s subject was chosen by Jack Sargeant, the winner of the DeepArt art competition a couple of weeks ago. The topic is a large one, but I hope I gave it a decent enough shot.

Castle illustration by Mathew Nielsen.

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Lindybeige: a channel of archaeology, ancient and medieval warfare, rants, swing dance, travelogues, evolution, and whatever else occurs to me to make.

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January 31, 2020

Why The US Military Made GPS Free-To-Use

Filed under: History, Military, Space, Technology, USA — Tags: , , — Nicholas @ 02:00

Real Engineering
Published 16 Jun 2017

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January 27, 2020

Tank Chats #60 Valentine Bridgelayer | The Tank Museum

Filed under: Britain, History, Military, WW2 — Tags: , , — Nicholas @ 02:00

The Tank Museum
Published 23 Nov 2018

The Valentine Bridgelayer, on a Valentine Mark I hull, was developed in 1943 during the Second World War. They were largely superseded by Churchill Bridgelayer, although some Valentine Bridgelayers were used in north-west Europe from 1944 to 1945, because the supply of Churchill Bridgelayers could not meet demand.

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January 4, 2020

Looking back at the ’20s … the 1620s

Filed under: Architecture, Britain, History, Science — Tags: , , , , , — Nicholas @ 03:00

In the latest installment of Anton Howes’ Age of Invention, he takes us back to what he calls the “transformative 20s” of the seventeenth century:

St. Paul’s Church in Covent Garden (built 1631-8) by Inigo Jones.
Photo by Steve Cadman via Wikimedia Commons.

The 1620s saw an upsurge in major projects to transform Britain’s landscape. Engineers from the Dutch Republic like Cornelius Vermuyden came to straighten its rivers, build canals, and even drain its marshes, converting them into pasturage and farmland — in the decades that followed, they would even begin to drain the Great Fens. The cityscapes changed too. The former theatre designer and architect Inigo Jones — by 1615 the Surveyor-General of the King’s Works — introduced classical architecture from the continent, drawing upon the rules of beauty and proportion that had been set down by Vitruvius in the first century BCE and resuscitated in Renaissance Italy by Andrea Palladio. Jones’s influence transformed England’s palaces, churches, cathedrals, and even Covent Garden square, to reflect his ancient Roman ideal.

But the environment, built or natural, would be most transformed by the experiments of a few individuals with fossil fuels. Dud Dudley, an illegitimate child of the 5th Baron Dudley, in the 1620s experimented with smelting iron with peat and coal. Dudley was not the first to do so — the patent on using coal instead of charcoal to work iron had been sold on from person to person since at least 1589 — but his experiments were among the most influential. The famous Abraham Darby, who achieved commercial success in applying coal to smelting metals in the early eighteenth century, was Dud Dudley’s great-great-nephew.

Sir Robert Mansell (1570/71–1652), by an unknown artist.
Image via Wikimedia Commons.

The decade also saw major new attempts to use coal as a fuel in other processes, such as glass-making. Although the patent on using coal to make glass had been around since at least 1610, by the 1620s Sir Robert Mansell had bought out the partners who owned it and was pouring a fortune into setting up glassworks at Newcastle. In this case, the transformation was institutional. Mansell’s political connections allowed him to widen the terms of his patent, such that he even tried to ban all other kinds of glass in England, regardless of whether they were made using other fuels, or even imported. Usually, patents of invention were for things entirely new, and were not supposed to interfere with existing English industries. But over the course of the 1610s, various abuses like Mansell’s came to light. King James I, eager for cash, had sold monopolies on ancient trades, as well as the new — one crony was even awarded a patent for inns and alehouses. Mansell’s patent, along with the others, was attacked in Parliament in the 1620s, and even revoked. The outcry ultimately led to the Statute of Monopolies of 1624 — the earliest patent legislation in England, which sought to regulate the royal practice of granting them. (Ironically, Mansell was so well-connected that he managed to get his controversial glass-making patent renewed and then exempted from the new Act.) The Statute of Monopolies was the only English patent legislation in force during the Industrial Revolution — there was no more patent legislation until 1852.

Finally, the ’20s saw a transformation of science. It was the decade in which Francis Bacon published some of his most significant works, on how to collect, refine, and systematise human knowledge for the good of humankind. He set out a comprehensive programme for the organisation of science and invention, with his utopian work New Atlantis setting out his ideal R&D lab – “Salomon’s House”. (Despite these high-minded aims, Bacon was also Mansell’s brother-in-law, and as attorney-general had helped draft the controversial glass-making patent. In 1621 he was convicted, fined, and even briefly imprisoned in the Tower of London for his role in the corrupt early patent system, though he appears to have been a scapegoat.)

January 2, 2020

Tank Chats #57 Churchill AVRE | The Funnies | The Tank Museum

Filed under: Britain, History, Military, WW2 — Tags: , , , — Nicholas @ 02:00

The Tank Museum
Published 20 Sep 2018

Another episode in the Tank Chats Funnies Specials, with David Fletcher looking at the weird and wonderful vehicles of 79th Armoured Division led by Major General Percy Hobart, known as “Hobart’s Funnies”.

The Churchill AVRE (Armoured Vehicle Royal Engineers). The Churchill was the basis for a number of Funnies. David Fletcher looks at the Fascine, Bobbin, Small Box Girder bridge, Bullshorn plough, Conger, the Churchill ARK and Bridgelayer.

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December 7, 2019

Bryan Donkin, 19th century inventor, amateur public relations whiz and independent lobbyist

Filed under: Britain, Government, History, Technology — Tags: , , , , , — Nicholas @ 03:00

In the latest installment of Anton Howes’ Age of Invention newsletter, he recounts the story of Bryan Donkin and his efforts to save innovators from excessive government interference:

One of the major arguments of the book I’m writing is that inventors’ talent for public relations and lobbying was one of the main reasons that Britain — rather unexpectedly — was the place that experienced an unprecedented acceleration of innovation.

The greatest of these lobbyist-inventors has to be Bryan Donkin, a nineteenth-century mechanical engineer. As an inventor, Donkin improved threshing machines, dredging machinery, and a variety of other tools. He invented the steel pen, dabbled in chemistry, as well as phrenology, and was one of the key people responsible for mechanising the production of paper. He became best known for improving and commercialising tin cans for food. Mechanised paper-making and canned food, having both been invented in France, were perfected in Britain by Donkin. He was the archetypal tinkerer.

Bryan Donkin (1768-1855).
Photographer unknown via Wikimedia Commons.

But it’s as a lobbyist that I think Donkin was truly exceptional. His experience has important lessons for all would-be supporters of invention today.

In April 1817, Donkin read in his newspaper that there had been a disaster in Norwich: the boiler aboard the steamboat Telegraph had exploded. Of the boat’s twenty-two passengers, eight had died immediately in the blast, and another six had eventually succumbed to their wounds. It was a shocking tragedy. And for Donkin, doubly so: in addition to the human death toll, the explosion threatened to kill off one of the era’s newest and most exciting inventions.

Although some of the first trials of steamboats had taken place in the 1780s, it wasn’t until the turn of the century that they began to be practical. By 1817, the first commercially successful steamboat service in Britain, Henry Bell’s Comet, had been chugging its way up the River Clyde between Glasgow and Greenock for only five years. And Londoners like Donkin had only just seen their first steamboat, Margery, when she puffed her way into the Thames in 1815 (the following year, after becoming the first steamboat to cross the Channel, she reinvented herself in Paris as Elise). Thus, by the time of Telegraph‘s explosion, the passenger steamboat had only just been born. There was a very real risk that it would be banned.

Fortunately, however, the steamboat had Donkin in its corner. His immediate reaction upon reading about the explosion was to gather some of his engineer friends — Timothy Bramah and John Collinge — and set off for Norwich to view the explosion site for themselves. As the first expert engineers on the scene, they then took control of the narrative about the explosion. Donkin and his friends went straight to Norwich’s MP to ask him to set up a parliamentary select committee to look into the disaster. And while they waited for the politicians to be assembled for the committee, they held a series of public meetings about the disaster at the Crown & Anchor Tavern — a favourite haunt of London’s engineers. There, they had a chance to rally the rest of the profession and get their story straight about what must have caused the explosion.

November 12, 2019

Merlin – The Engine that Won the War

Filed under: Britain, History, Military, Technology, USA — Tags: , , , — Nicholas @ 02:00

Curious Droid
Published 28 Sep 2019

Sounds like a bit of a bold claim that one engine helped change the course of WW2 but when you see the evidence it has a lot of validity but how did one little engine change the course of world events and become the engine that won the war?

I would like to thank David Irwin of Historic Aero Engines not only for the generous use of his footage but as in checking over the script and finished video for technical accuracy.

Historic Aero Engines display team :
https://www.youtube.com/channel/UCtE_…

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Sponsored by
Craig Fleming, Florian Hesse, Peter Barber

Presented by Paul Shillito

Written and Researched by Paul Shillito with assistance from David Irwin.

Images and Footage:
Historic Aero Engines, Rolls Royce, USAF, RAF, Boeing, Packard,
Joel Trick

Music From the Youtube library
“Magical Gravity” by Asher Fulero
“Saving the World” by Aaron Kenny
“Adrift” by ELPHNT
“Oceans, Rivers, Canyons” by ELPHNT
“The Story Unfolds” by Jingle Punks

November 3, 2019

Building Angkor – A Drowning City – Extra History – #4

Filed under: Architecture, Asia, History, Religion — Tags: , , , , , — Nicholas @ 06:00

Extra Credits
Published 2 Nov 2019

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We’ve talked about the magnificence of Angkor at its peak, but how did this sprawling metropolis become a city of ruins? The city of Angkor depended on the reliability of the seasonal monsoon. Several decades of drought left them with little choice than to modify the whole water system. But when the waters returned, they returned in force. As did enemy forces. Thus begins the death spiral of the city of Angkor.

From the comments:

Extra Credits
1 day ago
Always 👏 maintain 👏 your 👏 water 👏 infrastructure !!!

October 21, 2019

Building Angkor – Temple City – Extra History – #2

Filed under: Architecture, Asia, History, Religion — Tags: , , , , — Nicholas @ 04:00

Extra Credits
Published 19 Oct 2019

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Let’s take a little tour around Suryavarman II crowning achievement, the temple that took only 33 years to complete, while Europeans were taking centuries to build their cathedrals. With a two mile long wall, gates large enough to allow elephants to pass and steps so steep that the average person needed to climb them like a ladder, Angkor Wat’s every feature was made to be impressive. But what lies at the heart might be surprising…

October 13, 2019

Building Angkor – Monsoon Metropolis – Extra History – #1

Filed under: Architecture, Asia, History, Religion — Tags: , , — Nicholas @ 06:00

Extra Credits
Published 12 Oct 2019

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Let’s lay down the foundations for one of the architectural marvels of the ancient world: At its height, the city of Angkor was, by several measures, the largest city of the medieval era. With a million people and a footprint larger than modern-day New York, it was arguably the world’s largest pre-industrial city. And at its center lay the magnificent Angkor Wat.

Tank Chats #52 Sherman Crab Flail | The Funnies | The Tank Museum

Filed under: Britain, History, Military, Technology, WW2 — Tags: , , , — Nicholas @ 02:00

The Tank Museum
Published on 15 Jun 2018

Tank Chats playlist https://www.youtube.com/playlist?list…

Another episode in the Tank Chats Funnies Specials, looking at the weird and wonderful vehicles of 79th Armoured Division led by Major General Percy Hobart.

The Flail tank was designed to clear mines and flails were operated in the 79th Armoured Division after D-Day.

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October 7, 2019

The History of The London Underground

Filed under: Britain, History, Railways, Technology — Tags: , , , — Nicholas @ 02:00

Real Engineering
Published on 29 Dec 2017

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August 31, 2019

General Motors Diesel: The Modern Power (1937 and 1942)

Filed under: History, Military, Railways, Technology, USA, WW2 — Tags: , , — Nicholas @ 02:00

PeriscopeFilm
Published on 6 May 2016

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First made in 1937 by General Motors and then repackaged for the WWII war effort, DIESEL THE MODERN POWER tells the story of the development and principles of the diesel engine. The film uses live action and animation to show how the diesel engine works, and live action footage of Sherman tanks, streamlined locomotives, switching engines, ships, and more.

The film begins with an historical overview that includes a brief lesson on how to make fire, including two stones, rubbing pieces of wood, and even the “fire syringe” that was used by the people of Southeast Asia. The syringe is used to demonstrate the operation of a piston in an engine.

At 14:30, 600 hp diesel engine are seen at the Century of Progress Exposition in Chicago. At 14:46, the Burlington Pioneer Zephyr is seen running from Chicago to Denver. Mainline passenger locomotives are seen, providing up to 6000 hp. Diesel switch engines are seen at the 15:30 mark.

At 18:40, lumber equipment, oil pumps, and earth moving equipment are seen — all driven by diesel engines.

The Detroit Diesel works is seen at the 19 minute mark. Diesel powered submarines, mine sweepers and coast patrol boats as well as fleet tugs, are also seen.

A two-stroke diesel engine is a diesel engine that works in two strokes. A diesel engine is an internal combustion engine that operates using the Diesel cycle. Invented in 1892 by German engineer Rudolf Diesel, it was based on the hot-bulb engine design and patented on February 23, 1893. During the period of 1900 to 1930, four-stroke diesel engines enjoyed a relative dominance in practical diesel applications. Charles F. Kettering and colleagues, working at the various incarnations of Electro-Motive and at the General Motors Research Corporation during the 1930s, advanced the art and science of two-stroke diesel technology to yield engines with much higher power-to-weight ratios than the two-stroke diesels of old. This work was instrumental in bringing about the dieselisation of railroads in the 1940s and 1950s.

All diesel engines use compression ignition, a process by which fuel is injected after the air is compressed in the combustion chamber, thereby causing the fuel to self-ignite. By contrast, gasoline engines utilize the Otto cycle, or, more recently, the Atkinson cycle, in which fuel and air are mixed before entering the combustion chamber and then ignited by a spark plug.

August 27, 2019

The Secret Invention That Made D-Day Possible | INTEL

Filed under: Britain, France, History, Military, Technology, USA, WW2 — Tags: , , , — Nicholas @ 04:00

Forces TV
Published on 7 Jun 2019

As much as the success of D-Day was down to the bravery of soldiers … it was made possible by inventions and new machines. These Mulberry Harbours were a real World War 2 engineering victory.

More Mulberry: https://www.forces.net/d-day/mulberry-harbours-how-allies-floated-concrete-win-d-day
Forces Net D-Day Hub: http://forces.net/dday

August 12, 2019

QotD: The “lost technological developments” of the Great Library

Filed under: Books, History, Quotations, Science, Technology — Tags: , , , , — Nicholas @ 01:00

… the largely unempirical and abstract nature of Greek natural philosophy and the fact that it was generally socially divorced from the practical arts of engineering and architecture meant that most Greek and Roman scientists did little to advance technology, and the idea that the Great Library would have been filled with men excitedly sketching flying machines or submarines is, once again, a fantasy. When all this is pointed out some New Atheists try to invoke counter-evidence. They often claim, for example, that Hero of Alexandria worked at the Great Library and that he invented the steam engine. Even a scientist who has not studied history past high school (i.e. most of them) will have dim memories of the history of the Industrial Revolution and would therefore know it had something to do with the invention of steam engines, so surely Hero brought the ancient world to the brink of industrial transformation. Well, actually, no.

Hero does seem to have been another exception to the rule when it comes to philosophers tinkering with gadgets and it’s possible (though far from certain) that he worked in the Mouseion. But the practical applications of his study of pneumatics and dynamics were more toys and curiosities than any great leaps forward in technology. He famously made an aeolipile, though he didn’t actually invent it, given that it had already been described by the Roman engineer and architect Vitruvius, but this can only be called a “steam engine” in the loosest sense of the term. Hero’s little device was not capable of doing anything more than spinning in place and Roman technology lacked the high tensile metallurgy, the mathematics or the precision tooling that would be required to make a true steam engine. The other technological wonder that is often invoked here is the Antikythera mechanism. Exactly how this intricate mechanical orrery based on a geocentric model is supposed to indicate some nascent Industrial or Scientific Revolution is never made clear, but not only did it have no connection to the Great Library, it was a kind of instrument known since the third century BC. If it is evidence that the Greco-Roman world was on the brink of a technological revolution and was only stymied by the rise of Christianity, one has to wonder what kept them from achieving this wondrous thing for the 600 years between its invention and the conversion of Constantine.

The New Atheist mythic conception of the “Great Library of Alexandria” bears very little resemblance to any historical actuality. It was a shrine with scholars attached to it, not a secular university. Its scholars were far more concerned with poetry, textual analysis, grammar, lexicography and rhetoric than anything we would see as “science”. The proto-science they did do was mainly of a highly abstract and often metaphysical nature rather than anything like modern science. And it was also generally divorced from technical innovation and what little practical application it was given did not much at all to advance technology. The idea that if the Great Library had not been burned down by wicked Christians we’d all be living in gleaming space cities on Europa or Callisto is, therefore, a silly fantasy. And not least because the Great Library … wasn’t burned down by wicked Christians.

Tim O’Neill, “The Great Myths 5: The Destruction Of The Great Library Of Alexandria”, History for Atheists, 2017-07-02.

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