The International Kilogram, a cylinder of a platinum-iridium alloy is *exactly* 1 kilogram, and is locked in a vault southwest of Paris, that takes 3 keys to open. It has only been taken out on 3 separate occasions since it was created, almost 140 years ago. atlasobscura.com/places/l…
In September 1978, a paint scraper worth 15 cents was dropped into the torpedo launcher of the US nuclear submarine USS Swordfish, jamming the loading piston in its cylinder. When divers failed to free the piston, the sub had to be drydocked and repaired at a staggering cost of 171,000$ . en.wikipedia.org/wiki/USS…
Submarines dispose of trash using specially perforated metal cylinders to ensure the refuse sinks noiselessly to the bottom of the ocean. technology.org/2019/02/02…
A 3500 year old Egyptian obelisk was encased in an iron cylinder and then rolled into the sea. With the addition of a bow, rudder, mast, and a bridge for crew accommodation the cylinder was turned into a ship and sailed to London, England, where it arrived three months later in January 1878 en.wikipedia.org/wiki/Cle…
In 1793, Thomas Jefferson requested a 1kg copper cylinder from France, to be used as a weight standard in adopting the metric system in the United States. The ship carrying the copper was blown off course into the Caribbean, where it was looted by pirates. npr.org/sections/thetwo-w…
William Murdoch was a Scottish engineer and inventor. Who invented the oscillating cylinder steam engine and gas lighting. His house was the first house to be lit by gas. en.wikipedia.org/wiki/Wil…
Over 3,800 Ancient artifacts, including cuneiform tablets and cylinder seals, were smuggled into the United States and shipped to Hobby Lobby Stores before being discovered by ICE and returned to the Republic of Iraq. ice.gov/news/releases/ice…
Thomas Edison tried to create the first-ever talking dolls. In 1890, thanks to the development of the wax cylinder, he was able to produce a line of baby dolls. With wooden bodies, porcelain heads, and miniature phonographs in their chests, the dolls were unlike any toy to exist at the time. smithsonianmag.com/smiths…
Today I learned of the 1561 celestial phenomenon over Nuremberg, Germany. The event was documented in a broadsheet news article at the time with claims that witnesses observed hundreds of spheres, cylinders and other odd-shaped objects that moved erratically overhead. en.wikipedia.org/wiki/156…
The U.S. was one of the original 17 who signed the Treaty of the Metre (Convention du MΓ¨tre) and given two of the original forty cylinders that is know as the International Protoype Kilogram bipm.org/en/worldwide-met…
The six-cylinder Holden Torana was made just because Holden, GM's Australian arm, did not have a four-cylinder engine, which was considered more suitable for a car of that size. The unusual move turned out successful and launched a group of imitations from other brands. curbsideclassic.com/autom…
In the late 90s Daimler, the parent company of Mercedes-Benz and Maybach, was working on a 12-litre 24-cylinder engine for Maybach cars, which would have made around 800 hp and 1200 Nm (885 lb-ft) of torque. autoevolution.com/news/wh…
The cylinder deactivation system on Chevrolet's 5.3 and 6.2 V8 engines can have the engines run on as few as one cylinder in order to conserve fuel. news.pickuptrucks.com/201…
A 14 year old boy in China was killed anally after the gas cylinder in the base of his office chair (the part that allowed the user to adjust the seat up and down) exploded and sent chunks of the metal seat up his rectum, causing him to bleed to death. gizmodo.com/boy-killed-an…
The 1886 Benz Motorwagen used the Benz 954 cc single-cylinder four-stroke engine with trembler coil ignition. This new engine produced 2⁄3 horsepower at 250 rpm in the Patent-Motorwagen, although later test showed it to be capable of .9 hp at 400 rpm volocars.com/vehicles/132…
In September 1939, at the onset of World War II. The Night Watch was detached from its frame and rolled around a cylinder. The rolled painting was stored for four years in a special safe that was built to protect many works of art in the caves of Maastricht, Netherlands. cacciucco.nl/english/the_…
There is a single official object that defines the mass of a kilogram. A tiny, 139-year-old cylinder of platinum and iridium that resides in a triple-locked vault near Paris scientificamerican.com/ar…
The flag of Lofa County of Liberia is literally someone's detached arm holding some kind of cylinder over a stream en.wikipedia.org/wiki/Lof…
GM's Northstar V8 and V6 engines can run without coolant for about 100 miles by cutting off fuel supply to cylinder banks in turn. en.wikipedia.org/wiki/Nor…
The vehicle engine with the most cylinders has 48, the motorbike engine consists of 16 Kawasaki KH250 3-cylinder engines arranged in 6 banks of 8, and is completely road-legal jalopnik.com/5294379/48-c…
The "V" in V6/V8 engine doesn't stand for anything but is merely the shape of the mounted cylinders. gilisautomotive.com/v-sta…
The kilogram is currently defined as the mass of a platinum-iridium cylinder called the International Prototype Kilogram, which was made in 1879 and is stored in a special vault in France. There exist several dozen official replicas, also called prototypes. en.wikipedia.org/wiki/Kil…
The record-breaking corrective lens for myopia was -108.00 diopters (with a +6.00 cylinder astigmatism), made by a team of experts in 2016 for a Slovakian photographer. pointsdevue.com/article/r…
When the Kilogram was first defined as the weight of a platinum iridium cylinder held in France, a batch of 40 replicas was made for other countries. The USA owns and keeps replicas #4 and #20. en.wikipedia.org/wiki/Kil…
Despite making dozens of recordings of his voice on wax cylinders, no known recordings of Mark Twain's voice are known to have survived. blogs.loc.gov/now-see-hea…
Archimedes would deduce geometric properties of a figure by comparing it with a simpler figure. He referred to planar regions, and line segments, as though they had mass and weight. Archimedes deduced the volume of a sphere by comparing it with a cylinder and a cone whistleralley.com/torus/t…
There is a 'tooth in eye surgery' where they take the patient's tooth and drill a hole and implant it into the eye with an optic cylinder, only then covering the eye with oral mucosa (inner wall of mouth). en.wikipedia.org/wiki/Ost…
British gunboats were having problems being lit on fire during World War II, so they designed a special diesel engine with the cylinders in a DELTA configuration. The engine worked so well, it is still in service 70 years later, and is half the size of its competitors. But just a 5th the weight. en.wikipedia.org/wiki/Nap…
A Flettner Airplane flies without wings: instead, it has cylinders that spin which, using the same physics as throwing a curveball, "curves" the vehicle upwards into the air! en.wikipedia.org/wiki/Fle…
Volkswagen produced a V5 engine, with three cylinders on one side, and two on the other. Complex engineering was necessary to balance the engine. roadandtrack.com/new-cars…
Until recently, the kilogram was defined by the "International Prototype Kilogram" (IPK) , a platinum-alloy cylinder made in 1889. From May 2019, a Kibble balance was used to link it to Planck's constant (because the weight of the IPK was changing subtly over time). en.wikipedia.org/wiki/201…
The standard used to represent a kilogram is a cylinder of platinum-iridium alloy stored in France youtube.com/watch?v=ZMByI…
Two families escaped over the Berlin Wall by building a hot air balloon. A mechanic and a mason, used their mechanical know-how to build a hot air balloon engine out of old propane cylinders. Their wives pieced together a makeshift balloon from scraps of canvas and old bed sheets. mentalfloss.com/article.p…
The kilogram is the only unit of measurement that is still based in a physical object, a Platinum-Iridium cylinder. en.wikipedia.org/wiki/Kil…
Physicist Frank Tipler found that the laws of general relativity allowed for a time machine built from an infinitely long rotating cylinder en.wikipedia.org/wiki/Tip…
On March 9-10, 1945, 300 B29 bombers dropped nearly 500,000 cylinders of napalm and petroleum jelly on Tokyo creating a 40-sq-km firestorm that killed over 100,000 and maimed another million. It was the most destructive single bombing in history, including Hiroshima and Nagasaki atomic bombs. abc.net.au/news/2015-03-0…
In 2012, wax cylinders were found containing the only known voice recordings of someone born in the 18th century theatlantic.com/technolog…
Today I learned of the Isetta, a 1-2 person car with a single door that opened on the front of the vehicle, had a one-cylinder engine, and could get 78 mgp. en.wikipedia.org/wiki/Ise…
The 1989 Mitsubishi Minica Dangan ZZ was the first production car with five valves per cylinder en.wikipedia.org/wiki/Mit…
Today I learned of King Zhou of Shang's taste for cruelty and torture. King Zhou was known to force his enemies to hug a bronze cylinder filled with burning charcoal, threw others into a ancient "toaster", and even forced a captured king to eat his own son in the form of meat cakes or soup. en.wikipedia.org/wiki/Kin…
In the early 00's, some 200 wax cylinders thought lost forever were found, containing the earliest known recordings of classical music nytimes.com/2008/10/26/ar…
Cyrus the Great, founder of the Persian Empire, is mentioned in the Bible, The Torah and the Quran. Also he is the first king in history to give all people in his empire Human Rights as written in the Cyrus Cylinder. Also conquered Babylon and abolished slavery in his empire. en.wikipedia.org/wiki/Cyr…
The Mazda Roadpacer was a Holden Premier with a rotary engine instead of a big Australian 6-cylinder or V8 engine and it failed to sell well jalopnik.com/5983180/the-…
Today I learned of the Flettner Rotor, essentially creating propulsion from spinning a cylinder in wind. en.wikipedia.org/wiki/Fle…
The cylinder at the end of a power cord is a ferrite bead. en.wikipedia.org/wiki/Fer…
The gas in a domestic gas cylinder is actually odourless and has an odourant added to it for detecting leaks scienceabc.com/eyeopeners…
The Cyrus the Great Cylinder is the first charter of rights of nations in the world. iranchamber.com/history/c…
Today I learned about The Kilogram which is a cylinder of metal which is what the measurement of weight was based off of wikipedia.org/wiki/Kilogr…
Ford's three cylinder engine (ecoboost) is small enough to fit in carry on luggage on an airplane at.ford.com/news/cn/Pages…
"Hemi" engines have cylinders that are more bullet shaped than cylindrical, making them more efficient. en.m.wikipedia.org/wiki/H…

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