Air conditioning wasn't invented for human comfort whatsoever, rather it was a solution to decrease humidity at a printing company having issues with too much moisture impacting the paper and ink. asme.org/topics-resources…
The Rorschach test is just one of many standardized ink blot tests and ink blot tests can include colored ink as well. There are 10 standardized, not random ink blots in the Rorschach and the tests don't just measure what the subject sees but how they react to the test itself. en.wikipedia.org/wiki/Ror…
People with tattoos can donate blood only after 1 year of getting it. This is because introducing ink, metal, or other foreign material into your body affects the immune system and may expose it to harmful viruses. This can affect what’s in the bloodstream resulting in an unsuccessful donation. healthline.com/health/can…
That the preferred ink for documentation from the Middle Ages to the 20th century was Oak gall ink. irongallink.org/igi_index…
Tattoo ink can cause complications with an MRI Machine. Depending on the ingredients used for the ink, and its shape, tattoos can heat up/arc, causing burns. ncbi.nlm.nih.gov/pmc/arti…
Italian songwriter Al Bano sued Michael Jackson claiming β€œYou Will Be There” was a plagiarism to his little known β€œI cigni di Balaka”. Jackson lost the cause and the album β€œDangerous” was confiscated in Italy. It was later discovered that both songs are inspired by a 1939 hit by the Ink Spots. en.wikipedia.org/wiki/Wil…
Today I learned of Trish Vickers, a blind author who wrote 26 pages of her first novel without realising her pen had run out of ink. The local police force used their forensic lab to find the missing words, and the book was published on the day of her death. bbc.co.uk/news/uk-england…
In the 1990s, a Russian mafia and Italian mafia organization participated in a literal money-laundering scheme, washing and bleaching the ink out of US$1 bills and reprinting them as $100s, for use in the post-Soviet bloc countries, where the bills might avoid detection as counterfeits. en.wikipedia.org/wiki/Rus…
Some countries use semi-permanent ink in a finger to prevent voting more than once because they don't have a good people identification system to do that en.wikipedia.org/wiki/Ele…
The British secret service, MI6, used semen as invisible ink during WWI cbc.ca/life/wellness/five…
Almost 4,000 years ago, ancient Egyptian teachers used red ink to correct spelling mistakes, just like today. metmuseum.org/art/collect…
Today I learned of gyotaku, the Japanese art of β€œfish-printing” where actual fish are prepped and painted with ink, then pressed on to paper. It originated as a way for fishermen to record their catches and is still practised today. en.wikipedia.org/wiki/Gyo…
Avocado seed can β€œbleed” red if its outer surface is removed/broken due to high concentration of tannin being oxidized. Additionally, Tannin is a class of biomolecules that historically been used as an ink in its liquid form. sciencing.com/do-avocados…
Ancient Roman spies used urine as invisible ink to write secrets between the lines of their official documents, hence the saying: "read between the lines." The messages appeared only when heated. clinidirectpharmacy.co.uk…
Printer companies implement programmed obsolescence by embedding chips into ink cartridges that force them to stop printing after a set expiration date, even if there is ink remaining. en.wikipedia.org/wiki/Ink…
When drummer Vinny Appice joined Black Sabbath, he had to learn their songs on stage, using hastily written notes when playing unfamiliar songs. During one of the shows, a rainstorm made the ink run on Appice's notes en.wikipedia.org/wiki/Vin…
Some densely populated countries use Election Ink to prevent double voting. The ink uses silver nitrate which stains the skin and is only removed by shedding of external skin cells, therefore providing a sure way of knowing who has or hasn't voted. en.wikipedia.org/wiki/Ele…
Della Porta (1563) invented a method of writing secret messages inside eggs. Ink transferred from the shell to the boiled egg inside. The message could only be revealed when cracked and peeled en.wikipedia.org/wiki/Gia…
The reason we write from left to right is to not smudge ink. The Greeks (from whom English is derived) mostly had right handed stone workers and when they began to use papyrus, left to right allowed them to see what they were writing as well as prevent ruining the paper by smudging the ink childrensmuseum.org/blog/…
Japan does not accept signatures on official documents (banks, real estate and business) but require a β€˜hanko’ which is an official carved wooden or stone seal pressed in ink nippon.com/en/features/jg…
During World War I, Captain Sir Mansfield George Smith-Cumming's Secret Intelligence Service agents adopted the motto 'Every man his own stylo', after discovering that they could use semen as invisible ink. en.wikipedia.org/wiki/Man…
In 2008, fossilized ink sacs we recovered from preserved remains of Belemnotheutis cephalopods. Mixed with ammonia solution, the team was able to return the ink to its liquid form and used the ~150 million year old ink to draw a replica of of the original illustration of Belemnotheutis. en.wikipedia.org/wiki/Bel…
Many financial institutions require documents to be filled out in blue ink. You can actually have forms rejected just from using the wrong color. They do this to help differentiate original copies from photocopies. Blue ink is the simplest solution. investopedia.com/articles…
Ink, expelled as a defence mechanism by octopus, cuttlefish and squid, was used in writing for centuries In present times, this ink is used as a sauce for pastas and has also been proven to be effective in treatment for cancer. wikipedia.org/wiki/Cephal…
The word sepia comes from the Mediterranean Cuttlefish, a type of squid whose dark brown ink was used by classical civilizations. The name of this squid thereafter comes from the Greek ''sepein'' meaning: to rot. Most likely from the way the fish dirties the waters with its ink. mashedradish.com/2017/10/…
While Benjamin Franklin was in Paris during the American Revolution, his secretary was a British spy. The spy used the cover of weekly letters about β€œgallantry” (exploits with women). He would write in-between the lines in a special ink and leave the letter in a dead drop every Tuesday night. en.wikipedia.org/wiki/Edw…
Marvel Comics writer Mark Gruenwald, upon his death in 1996, by request had his ashes mixed in with the printing ink for the collected edition of his series Squadron Supreme. Most first printings of the book likely contain his remains. en.wikipedia.org/wiki/Mar…
Saddam Hussein commissioned a calligrapher to write a copy of the Quran using his blood as ink. The 605 page book contains roughly 27 liters of his blood and is kept in a mosque in Iraq behind 3 vault doors. atlasobscura.com/places/s…
The economic struggle in Venezuela caused Kellogg’s to sell breakfast cereal boxes without the colorful ink. The company claimed it was just more eco friendly packaging. nzherald.co.nz/business/n…
Mansfield Cumming, first director of Secret Intelligence Service (MI6) started using semen as invisible ink during World War 1, but they stopped it because of the smell and questions regarding the masturbatory habits of the agents involved. en.wikipedia.org/wiki/Man…
Science behind tattoos revolves around immune cells known as macrophages. These cells consume foreign debris and come rushing when one is wounded. Once the needle is pierced, they suck up the ink and keep it intact. The process keeps repeating once the old cells die and new rush to rescue popsci.com/how-tattoos-wo…
Today I learned about the "Stroop Effect" . In its basic form, the task is to name the color in which a word is printed, ignoring the word itself. When the word is a color word printed in a mismatched ink color, this is very difficult to do and results in slow, error-prone responding. imbs.uci.edu/~kjameson/EC…
Anonymous sent thousands of all-black faxes to the Church of Scientology to deplete all of their ink cartridges newyorker.com/magazine/20…
Most receipts are printed without ink. en.wikipedia.org/wiki/The…
Paul Fisher, creator of the space pen, redesigned the ink instead of the cartirdge to prevent leaking. He developed a thixotropic ink that is a gel at rest, but turns into a liquid under pressure. With this new ink, the pen would never leak and would only write when pressure was applied. smithsonianmag.com/arts-c…
Some 'erasable' pens don't erase their ink. Instead it changes colour to become invisible. shopeveryday.ca/blog/eras…
In 2012, a blind woman wrote a book on a notepad with rubberbands wrapped around to indicate lines. Her son read chapters back to her for edits then sent them to typesetters. Once, she gave her son 26 blank pages because the pen lost ink and police helped reform it in a five-month effort. bridportnews.co.uk/news/l…
Not all tattoos are vegan. This is due to some inks being comprised of animals fats, gelatine, bone char or insect parts. vegansociety.com/resource…
In 2014 a 14 year old Suvir Mirchandani suggested that US government could save $400m on printer ink by switching their font from Times Roman to Garamond. Unfortunately the calculations didn't quite add up. independent.co.uk/news/sc…
Today I learned of Strewwelpeter a German book to scare kids into being good. Ex. a story about a boy who never cleans himself & is unpopular, one refuses to eat his soup & withers away & dies, a girl plays with matches & burns to death, & 2 boys tease someone w/ dark skin & are then dipped in ink as a lesson en.wikipedia.org/wiki/Str…
The Fisher Pen Co. patented a sealed, pressurised ink cartridge for the anti-gravity pen in 1966. The "thixotropic” ink is close to a solid before being stirred & as it's stirred by the ball going through the point, it becomes very thin which allows it to flow in the gravity-free vacuum of space wired.co.uk/article/space…
Just inside the Jaffa Gate in Jerusalem’s Old City is a tiny shop that is the world’s only surviving tattoo shop for medieval pilgrims. This is Razzouk Ink, a shop run by a family who have been involved in the cultural practice of inking marks of faith on pilgrims as far back as 1300. atlasobscura.com/articles…
A Ditto machine is the North American trademark of a 1920s spirit duplicator, which is the predecessor of modern photocopiers(The "spirit" refers to the alcohol solvents in the ink) en.wikipedia.org/wiki/Spi…
, Frank Zappa had a composition so complex it was called The Black Page because the sheet music was covered in so much ink. en.wikipedia.org/wiki/The…
Long before DDOS or spam-mail attacks there was the infamous "Black Fax". Senders would attack the receiver with completely black pages to occupy their fax machine and making them use up all their expensive ink/toner and paper. faxauthority.com/glossary…
British spies used semen as invisible ink during WWI and this method was invented by Sir Mansfield Cumming gizmodo.com/british-spies…
Hulk was originally intended to be grey. Ink problems released in the first edition made Stan Lee decide it should be green. hulk.fandom.com/wiki/Grey…
Today I learned of quipos - the Andean writing system which didn't use ink and paper/tablets/skins. Information was encoded in an intricate system of strings of colored yarn tied in a variety of knots. This system survived until just after the Conquistadors. ancient.eu/Quipu/
A 13 yr old who made a Braille printer out of Legos after discovering that millions of blind people in developing countries buy Braille devices that cost $2K and weigh 20 lbs. His prints Braille from computers to paper using raised dots instead of ink, weighs a few lbs, and costs only $350. theguardian.com/technolog…

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