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March 27, 2021 Archives
Saturday, March 27, 2021
CONTEXT: Generating Bitcoin Addresses from First Principles
Generating a Bitcoin address from first principles. This is gnarly, but you'll understand exactly what is going on.https://t.co/dye0JBWRR6
— John Walker (@Fourmilab) March 27, 2021
Posted at
21:27
TRACKING WITH CLOSEUPS: DC-10 Cargo Door II: Turkish Airlines Flight 981 Crash, March 1974
Here is more information about Turkish Airlines Flight 981.
Posted at
15:04
CONTINUITY: Building a Digital Model of the Antikythera Mechanism
Researchers Develop a Digital Model of the 2,200-Year-Old Antikythera Mechanism, "the World’s First Computer" https://t.co/QS6Wzq1INM pic.twitter.com/xahdJPxfV7
— Open Culture (@openculture) March 20, 2021
Here is the paper from Nature Scientific Reports, “A Model of the Cosmos in the ancient Greek Antikythera Mechanism”. X-ray computed tomography of the mechanism suggests the mechanism was a mechanical orrery which computed the positions of the Sun, Moon, and five planets known in antiquity and indicates the Greeks who built it understood periodic terms in much the same way as they are used in present-day analytic planetary theories.
Posted at
12:06
THE HAPPENING WORLD: Suez Canal Blocked by the Evergreen Container Ship “Ever Given”
Juan Browne analyses the accident that blocked the Suez Canal, focusing on how mega-container ships are vulnerable to crosswinds which overpower their bow and stern thrusters,
Posted at
11:59
CONTEXT: A Rube Goldberg Inspired Useless Machine
Posted at
11:35