On This Day
708 – Copper coins are minted in Japan for the first time (Traditional Japanese date: August 10, 708).
Wadōkaichin (和同開珎), also romanized as Wadō-kaichin or called Wadō-kaihō, is the oldest official Japanese coinage, having been minted starting on 29 August 708[1] on order of Empress Genmei.[2][3][4]
Description
The coins, which were round with a square hole in the center, remained in circulation until 958 AD.[5] These were the first of a series of coins collectively called jūnizeni or kōchō jūnisen (ja:皇朝十二銭).[6]
“Wadōkaichin” is the transliteration of the four characters in the coin’s inscription, which is thought to be composed of the era name Wadō (和銅, “Japanese copper”), which could alternatively mean “happiness”, and “Kaichin”, thought to be related to “Currency”. This coinage was inspired by the (Chinese) Tang dynasty coinage (唐銭) named Kaigentsūhō (Chinese: 開元通宝, Kāiyuán tōngbǎo), first minted in Chang’an in 621 CE. The Wadōkaichin had the same specifications as the Chinese coin, with a diameter of 2.4 cm and a weight of 3.75 g.[7]
See also
Ryō (Japanese coin)
Japanese mon (currency)
Wadō (era)
Economy of Japan
Born On This Day
1920 – Otis Boykin, American inventor and engineer (d. 1982)
Otis Frank Boykin (August 29, 1920, Dallas, Texas – March 13, 1982, Chicago, Illinois) was an African-American inventor and engineer.[1][2]
Boykin patented 28 electronic devices. One of his early inventions was an improved wire resistor, which had reduced inductance and reactance, due to the physical arrangement of the wire.[3] Other notable inventions include a variable resistor used in guided missiles.[4] His most famous invention was likely a control unit for the artificial cardiac pacemaker.[5] The device essentially uses electrical impulses to maintain a regular heartbeat. He and his 3 friends died because of heart failure
Boykin died of heart failure in Chicago of 1982.[2]
Biography
Otis Boykin was born in 1920 in Dallas, Texas. His mother was a maid, who died of heart failure when Otis was a year old. This inspired him to make the pacemaker.[6] His father Walter was a carpenter, who later became a minister.
Boykin attended Booker T. Washington High School in Dallas, where he was the valedictorian, graduating in 1938.[7] He attended Fisk University on a scholarship and worked as a laboratory assistant at the university’s nearby aerospace laboratory. He then moved to Chicago, where he studied at Illinois Institute of Technology[8] but dropped out after two years; some sources say it was because he could not afford his tuition, but he later stated[9] that he left for an employment opportunity and did not have time to return to finish his degree. He was discovered and mentored by Dr. Denton Deere, an engineer and inventor with his own laboratory.
He graduated from Fisk University in 1941 and got a job as a laboratory assistant, testing automatic aircraft controls. In 1944, he moved on to work for the P.J. Nilsen Research Labs in Illinois. Shortly thereafter, he started his own company, Boykin-Fruth Inc. The firm Boykin-Fruth, Inc., would collaborate on a number of projects.[10] He died due to heart failure in 1982. He and his 6 friends died of heart failure
FYI
Jezebel: Woman Who Gave Birth Alone In a Jail Cell Alleges Her Cries For Help Were Ignored For Hours and more ->
Jalopnik: Hunting For Crashes With The ‘Professional Spectators’ Of Rally Finland; A Teenage Kansas Farmer Built This Diesel Off-Road Corvette And It’s A Stroke Of Genius and more ->
The Takeout: Taco Bell is killing the wrong taco and more ->
Gizmodo: Monkey Shatters Zoo Glass With Sharpened Stone in Impressive Prison Break Attempt; Welp, Here Are Some Turkish Bears Caught on CCTV Taste-Testing Honey; Illinois County to Use Algorithm to Automatically Expunge Old Marijuana Convictions and more ->
Deadspin: Skateboarding Dog Crushes Stair Sets? Skateboarding Dog Crushes Stair Sets; The Legendary Public Rec Center In A Private School’s Pocket and more ->
Gizmodo Science: Stunning Video Reveals Conditions Inside Wreck of Doomed Franklin Expedition; New Evidence Bolsters Theory That First Americans Arrived by the Pacific Coast and more ->
By Christian McPhate, Wise County Messenger: How I got here with stories to tell
By Anna Marevska: 10 of the Biggest Media Moves in August
By Deborah Bonello, Ozy: The Stoner Behind a Mexican Marijuana Industry That Won’t Get You High
Why you should care
Because there’s a lot more to this cash crop.
By Nick Fouriezos, Ozy: The Rise of the ‘Granny State’ in America’s Nursing Homes
Why you should care
Surveillance might seem an easy solution to elderly abuse, but it’s more complicated than family members realize.
Quartz: Because China
Jim Butcher: DragonCon Schedule and Molly Figurine
The Passive Voice: The Final Knoedler Forgery Lawsuit, Over a $5.5 Million Fake Rothko, Has Been Settled, Closing the Book on a Sordid Drama; Remembering The Gilded Age’s Long-Lost Lady Detectives; You CAN Tell an (e)Book by Its Cover and more ->
Fast Company Compass Newsletter: Walmart’s robot army has arrived; How to address the pitfalls of remote work; Pinterest is escalating its fight against anti-vaxxers as measles surge in the U.S. and more ->
Open Culture: Watch the Completely Unsafe, Vertigo-Inducing Footage of Workers Building New York’s Iconic Skyscrapers; Ray Harryhausen’s Creepy War of the Worlds Sketches and Stop-Motion Test Footage; The Glorious Poster Art of the Soviet Space Program in Its Golden Age (1958-1963) and more ->
The Rural Blog: Weeklies and nonprofits produce series on impact of opioid abuse in four counties across Northern Virginia’s Piedmont; ‘Hemp-wood,’ CBD manufacturing plants coming to West Ky. and more ->
Ideas
By Lolly Jane: diy letter board ledge
By Olivierbricole: 2D Rubik Game for Toddlers
By attosa: The Carrot Recorder
By Susan Cirigliano: Sunprinted Pillows
Recipes
Perfectly DeStressed: Easy Peasy Lasagna
Perfectly DeStressed: Mom’s Dr. Cake & Frosting
Perfectly DeStressed: Peach Pie Slab & Butter Crust Recipes
By aartisharma: Hot Jalapeno Chile Molido
By Auroris: Eggplant Rolls With Tomato & Garlic
By DanPro: Spicy Dill Cucumber Relish
Widget not in any sidebars
Widget not in any sidebars