Biographics
Published 6 Feb 2020Check out Squarespace: http://squarespace.com/biographics for 10% off on your first purchase.
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TopTenz Properties
Our companion website for more: http://biographics.orgCredits:
Host – Simon Whistler
Author – Radu Alexander
Producer – Jennifer Da Silva
Executive Producer – Shell HarrisBusiness inquiries to biographics.email@gmail.com
A series of British army WW2 Royal Mechanical and Electrical Engineers (REME) training films on the recovery vehicles for in-the-field recovery of all manner of trucks and tanks. The original training films do not match the cuts in the YouTube versions, and one film cuts off at the end of each “reel” and restarts with the next video. The series is called “Scammell recovery”, but the use of other vehicles is also covered.
Christopher Lloyd-Staples
Published 21 Dec 2017Scammell Pioneer recovery operations, and loading onto the tank transporter
The History Guy: History Deserves to Be Remembered
Published 22 May 2017The History Guy examines the Aral Sea and the confluence of geography and history.
The History Guy uses images that are in the Public Domain. As photographs of actual events are often not available, I will sometimes use photographs of similar events or objects for illustration.
Patreon: https://www.patreon.com/TheHistoryGuy
The History Guy: Five Minutes of History is the place to find short snippets of forgotten history from five to fifteen minutes long. If you like history too, this is the channel for you.
Awesome The History Guy merchandise is available at:
teespring.com/stores/the-history-guyThe episode is intended for educational purposes. All events are presented in historical context.
#history #thehistoryguy #worldhistory
Practical Engineering
Published 29 Oct 2018Comparing modern concrete to that of the western Roman empire.
In this video, I discuss a few modern techniques that help improve design life of concrete, including roller compacted concrete (RCC) and water reducing admixtures (superplasticizers). There are a whole host of differences between modern concrete and that of the western Roman empire that I didn’t have time to go into, including freeze/thaw damage. This is such an interesting topic, so here are some references if you’d like to learn more:
– http://www.romanconcrete.com/
– https://www.usbr.gov/tsc/techreferenc…
– https://en.wikipedia.org/wiki/Roman_c…-Patreon: http://patreon.com/PracticalEngineering
-Website: http://practical.engineeringTonic and Energy by Elexive is licensed under a Creative Commons Attribution License
Source: https://www.youtube.com/watch?v=U6fBP…
In his latest Age of Invention newsletter, Anton Howes investigates Spanish claims that Jerónimo de Ayanz y Beaumont beat Newcomen by a hundred years in the quest to harness steam power:
Screenshot from “Savery’s Miners Friend – 1698”, a YouTube video by Guy Janssen (https://www.youtube.com/watch?v=Dt5VvrEIj8w)
The Spanish claimant in question is one Jerónimo de Ayanz y Beaumont, a late-sixteenth-century aristocrat and military engineer from Navarre, who from 1597 served as the administrator of the royal mines, and who invented a whole host of devices, from diving equipment and mine ventilation systems, to various improvements to mills, pumps, and furnaces. Thanks to the work of historian and engineer Nicolás García Tapia, whose biography of Ayanz came out in 2010, we now know quite a bit about this interesting inventor. The work was published in Spanish, and quite understandably was widely covered in the Spanish press. So although Ayanz has not quite become a household name in Spain just yet, he does now seem to be fairly well-known by the local “well actually” brigade (a shadowy international movement of which I am, to most people’s annoyance, a long-serving member). “Thomas Newcomen/Thomas Savery invented the steam engine you say? Well actually, I think you’ll find it was Ayanz a century earlier” — I had a quick google and discovered there were hundreds of comments to this effect.
But, actually, the story is a bit more complicated than that. The devil, as always, is in the detail, and unfortunately the press claims about the technology have become widely and erroneously repeated, apparently ignoring Tapia’s careful historical work. I even spotted a recently-published encyclopaedia of inventions that repeated the errors.
So what, exactly, did Ayanz invent? The key fact is that in 1606 he obtained a 20-year monopoly from the king of Spain for the use of over fifty different inventions, including two steam-related devices. One of these was related to getting rid of deadly mine gases, which had killed one of his friends and collaborators, and had almost killed Ayanz too. His solution was a steam injector — essentially, a steam boiler with a narrowing pipe sticking out of it, which would inject the steam into a larger air pipe. The pressurised steam, upon flowing up into the air pipe, created a powerful sucking effect behind it, thus rapidly drawing deadly gases out of the mine. (A bit like at the start of this video).
It was the second steam-powered device, however, that has become famous as Ayanz’s steam engine. Just like the inventions of Thomas Savery and Thomas Newcomen about a century later, it was designed to pump the water out of mines. Ayanz formed a partnership in 1608-11 to reopen the silver mines of Guadalcanal in Spain, which had been abandoned due to flooding, and seems to have tried to implement the engine there: he obtained rights to cut down nearby trees for firewood, for example, and exploited nearby copper, which would have been essential for making boilers and pipes. As for whether he actually got it to work, we don’t know for sure. Sadly, he died only a few years after starting the project.
But the devilish detail is in how his engine worked. Specifically, all the multiplying errors seem to have arisen from a misinterpretation, by the press, of Tapia’s statement that the engine was “very similar” to that of Thomas Savery. There are, certainly, some important similarities. Both engines, for example, exploited the expansionary force of steam. In both, steam from a boiler was piped into a water tank, forcing that water up a narrow pipe — what we might call a pushing effect. And both engines used two tanks, which alternated so that the engine would pump continuously. While one tank and was being refilled with mine water, the other would be have the steam pushing the water out, and then vice versa. So far so good. Indeed, due to the two water tanks, drawings of Ayanz’s and Savery’s devices look very similar side by side.
Herbert Hoover was born in 1874 to poor parents in the tiny Quaker farming community of West Branch, Iowa. His father was a blacksmith, his mother a schoolteacher. His childhood was strict. Magazines and novels were banned; acceptable reading material included the Bible and Prohibitionist pamphlets. His hobby was collecting oddly shaped sticks.
His father died when he is 6, his mother when he is 10. The orphaned Hoover and his two siblings are shuttled from relative to relative. He spends one summer on the Osage Indian Reservation in Oklahoma, living with an uncle who worked for the Department of Indian Affairs. Another year passes on a pig farm with his Uncle Allen. In 1885, he is more permanently adopted by his Uncle John, a doctor and businessman helping found a Quaker colony in Oregon. Hoover’s various guardians are dutiful but distant; they never abuse or neglect him, but treat him more as an extra pair of hands around the house than as someone to be loved and cherished. Hoover reciprocates in kind, doing what is expected of him but excelling neither in school nor anywhere else.
In his early teens, Hoover gets his first job, as an office boy at a local real estate company. He loves it! He has spent his whole life doing chores for no pay, and working for pay is so much better! He has spent his whole life sullenly following orders, and now he’s expected to be proactive and figure things out for himself! Hoover the mediocre student and all-around unexceptional kid does a complete 180 and accepts Capitalism as the father he never had.
His first task is to write some newspaper ads for Oregon real estate. He writes brilliant ads, ads that draw people to Oregon from every corner of the country. But he learns some out-of-towners read his ads, come to town, stay at hotels, and are intercepted by competitors before they negotiate with his company. Of his own initiative, he rents several houses around town and turns them into boarding houses for out-of-towners coming to buy real estate, then doesn’t tell his competitors where they are. Then he marks up rent on the boarding houses and makes a tidy profit on the side. Everything he does is like this. When an especially acrimonious board meeting threatens to split the company, a quick-thinking Hoover sneaks out and turns off the gas to the building, plunging the meeting into darknes. Everyone else has to adjourn, the extra time gives cooler heads a change to prevail, and the company is saved. Everything he does is like this.
(on the other hand, he has zero friends and only one acquaintance his own age, who later describes him to biographers as “about as much excitement as a china egg”.)
Hoover meets all sorts of people passing through the Oregon frontier. One is a mining engineer. He regales young Herbert with his stories of traveling through the mountains, opening up new sources of minerals to feed the voracious appetite of Progress. This is the age of steamships, skyscrapers, and railroads, and to the young idealistic Hoover, engineering has an irresistible romance. He wants to leave home and go to college. But he worries a poor frontier boy like him would never fit in at Harvard or Yale. He gets a tip – a new, tuition-free university might be opening in Palo Alto, California. If he heads down right away, he might make it in time for the entrance exam. Hoover fails the entrance exam, but the new university is short on students and decides to take him anyway.
Herbert Hoover is the first student at Stanford. Not just a member of the first graduating class. Literally the first student. He arrives at the dorms two months early to get a head start on various money-making schemes, including distributing newspapers, delivering laundry, tending livestock, and helping other students register. He would later sell some of these businesses to other students and start more, operating a constant churn of enterprises throughout his college career. His academics remain mediocre, and he continues to have few friends – until he tries out for the football team in sophomore year. He has zero athletic talent and fails miserably, but the coach (whose eye for talent apparently transcends athletics) spots potential in Hoover and asks him to come on as team manager. In this role, Hoover is an unqualified success. He turns the team’s debt into a surplus, and starts the Big Game – a UC Berkeley vs. Stanford football match played on Thanksgiving which remains a beloved Stanford football tradition.
Scott Alexander, “Book Review: Hoover”, Slate Star Codex, 2020-03-17.
engineerguy
Published 14 Apr 2015Bill details the engineering choices underlying the design of a beverage can He explains why it is cylindrical, outlines the manufacturing steps needed to created the can, notes why the can narrows near it lid, show close ups of the double-seam that hold the lid on, and details the complex operation of the tab that opens the can.
Overly Sarcastic Productions
Published 29 Jul 2017Human sacrifice, smallpox, and the Spanish empire … that’s the whole story, right? Haha, eheh, hehe, HA, not even close! The civilizations of Mesoamerica are fascinating in their own right, and very distinct from each other too! Step on in and I’ll learn you a thing or two.
Also no spoilers, but next time, I’m covering the Iroquois Confederation! Ok, maybe that was exactly a spoiler. [Reposted here.]
This video was produced with assistance from the Boston University Undergraduate Research Opportunities Program.
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BBC Earth Lab
Published 5 Aug 2013Getting to space in a rocket is expensive! One of the most popular alternative ideas is the space elevator, but is it really possible?
Here at BBC Earth Lab we answer all your curious questions about science in the world around you. If there’s a question you have that we haven’t yet answered or an experiment you’d like us to try let us know in the comments on any of our videos and it could be answered by one of our Earth Lab experts.
This month’s fallen flag article in Classic Trains magazine recounts the story of the Carolina, Clinchfield & Ohio, later known as the Clinchfield Railroad:
Clinchfield Railroad SD40 locomotive number 3002 at Spartanburg, SC in February 1968.
Roger Puta photo via Wikimedia Commons.
The Clinchfield was different. It was conceived by men who had the vision and resources to do things right. It was built to the highest engineering standards of the early 20th century. It never went through a financial failure or reorganization. Indeed, the Carolina, Clinchfield & Ohio Railway was the antithesis of traditional railroad evolution.
In 1902, a wealthy regional businessman, George L. Carter, began stitching together an integrated industrial enterprise to develop vast coal deposits in the Clinch (River) Fields of southwest Virginia and to deliver the coal across the southern Appalachian mountains to markets in the Carolinas and to ships calling at Wilmington, Charleston, Savannah, and Jacksonville. Carter, from whom Howard Hughes could have learned a thing to two about secrecy, operated using the South & Western Railway banner. The name said everything … and nothing. The S&W was chartered from any point on the Atlantic Ocean to any point on the Great Lakes. Carter agents seized by legal means and/or physical occupation key terrain features through the mountains in competition with the Chesapeake & Ohio and the Southern Railway.
Clinchfield Railroad map. The Clinchfield’s 277-mile, 5-state line stretched from Elkhorn City, Kentucky, to Spartanburg, South Carolina.
Map via Classic Trains.Within that generous charter was the idea of building a railroad to haul coal south and merchandise in both directions between the Midwest and the Southeast. The plans also incorporated development of several on-line cities to consume coal and make products from regional resources to diversify and grow the freight business. Finally, a steamship line was organized to move coal beyond the ports to customers in the Caribbean.
By 1905, Carter realized he needed far more capital than he could personally provide. Reluctantly, he managed to convince Blair & Co., a big Wall Street investment house, to finance the project. M. J. Caples, an engineer with mining and railroad experience, laid out and then built a magnificent low-grade, high-capacity railroad. Tunnels, steel viaducts, generous fills, and rocky cuts appeared as needed. More than 4 percent (almost 10 miles) of the line was underground in 55 tunnels. With construction of the 277-mile railroad well advanced, its name was changed to Carolina, Clinchfield & Ohio Railway in 1908.
Coal began flowing across the 242 miles from Dante, Va., to Spartanburg, South Carolina, in 1909 while the owners and engineers debated how to cross the Cumberland mountains into the Ohio River valley. Between 1912 and 1915, a 35-mile extension including what was then the 10th-longest tunnel in the U.S. created a through route connecting Chesapeake & Ohio at Elkhorn City, Kentucky, with the three major southeastern carriers (Seaboard at Bostic, North Carolina; Atlantic Coast Line and Southern at Spartanburg). In constant-value dollars, the five-state CC&O was the most expensive railroad ever built in the U.S.
Lindybeige
Published 2 Jun 2016Sieges in the ancient and medieval worlds were on quite different scales. 10,000 men can do things differently from 500.
Support me on Patreon: https://www.patreon.com/Lindybeige
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.
Buy the music – the music played at the end of my videos is now available here: https://lindybeige.bandcamp.com/track…
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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Twitter: https://twitter.com/Lindybeige I may have some drivel to contribute to the Twittersphere, plus you get notice of uploads.
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Real Engineering
Published 16 Jun 2017Get your Real Engineering shirts at: https://store.dftba.com/collections/r…
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http://www.RealEngineering.netThank you to my patreon supporters: Adam Flohr, darth patron, Zoltan Gramantik, Henning Basma, Karl Andersson, Mark Govea, Mershal Alshammari, Hank Green, Tony Kuchta, Jason A. Diegmueller, Chris Plays Games, William Leu, Frejden Jarrett, Vincent Mooney, Ian Dundore, John & Becki Johnston. Nevin Spoljaric
Once again thank you to Maeson for his amazing music. Check out his soundcloud here: https://soundcloud.com/maeson-1/tracks
The Tank Museum
Published 23 Nov 2018The 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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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.)
The Tank Museum
Published 20 Sep 2018Another 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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