Replies to post #421640 on Tornado Alley (PROG)

[fuagf]

It is interesting. Biometric fails - oops. "...but, officer, seriously, it's not my fault."

"Yes, once you know about the koala prints, you find articles everywhere. This is interesting,..."

"You see a lot of difficulty with senior citizens going through these [airport] biometric
checkpoints ... their fingerprints just don't scan, and it's not their fault," Tattoli explained.
Your - https://www.abc.net.au/news/2018-07-01/biometrics-koalas-and-wood-glue-fascinating-fingerprint-facts/9920802

Good to know. Thanks, am more prepared now for border failure next entry effort to USA. ;-) Last
two times i was pulled from the line and chatted to in a side room. No reason i could ever think of.

Yep. Fingerprinting that long ago is cool too. Just one of many not mentioned below.
The world, as it was known then, was soooo different. So small. So many more wars.

3rd century BC
[...]

Map of the world in 200 BC, the end of the third century BC.
[...]
* 221 BC: With the conquest of the State of Qi, Qin Shi Huang (???) unifies the whole
of China into one empire that also included northern Vietnam, forming the Qin Dynasty.
[...]
* 216 BC: Hannibal famously crushed the Roman legions at the Battle of Cannae.
https://en.wikipedia.org/wiki/3rd_century_BC#200s_BC

So many inventions, yet so many today still feel we have contributed so much more.

Inventions, discoveries, introductions

* Eratosthenes accurately calculates Earth's circumference and introduces the sieve of Eratosthenes, an algorithm for identifying prime numbers.
* Weiqi well-established in China, and may date back to the 2nd millennium BC.
* Crucible steel was first produced in Southern India.
* Canopus stele of Ptolemy III implements the leap year in Egypt. Leap year not formally recognized until Caesar in 55 BC.
* First Roman sundial (293 BC).[1]
* Toe stirrup finds its earliest manifestation in India.
* Water screw invented by Archimedes.
[..out a bit - The Archimedes screw, also known as the Archimedean screw, hydrodynamic
screw,[1] water screw or Egyptian screw,[2] is one of the earliest hydraulic machines.]
https://en.wikipedia.org/wiki/Archimedes%27_screw
* The Euclidean algorithm, the oldest algorithm still in use today, introduced by Euclid.
* Invention of the hydraulis (the precursor to the Pipe organ) by Ctesibius, a Greek engineer working in Alexandria.
* Zinc mining was first smelted from zinc ore in India
* Emperor Gaozu of Han China discovers an elaborate mechanical puppet theater in the treasury of the previous ruler Qin Shi Huang.
* The enormous Du Jiang Yan Irrigation System of China is engineered and constructed by Li Bing (??) in 256 BC.
* Great Stupa, Sanchi, Madhya Pradesh, India, Maurya period, is founded by King Chandragupta Maurya.
* Silk is exported to Europe from China.
* Armillary spheres, models of objects in the sky developed by the Greeks, are in use as teaching tools.
* Rotary mill invented by the ancient Greeks [2]
https://en.wikipedia.org/wiki/3rd_century_BC#Inventions,_discoveries,_introductions