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#3166 |
Ain't no relax!
Join Date: Sep 2005
Casino cash: $998919
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Our ancestors were much smarter than we typically give them credit for...
Ancient Greek Antikythera Mechanism recreated by scientists New model reveals display of 2,000 year-old mechanical device used by the ancient Greeks to predict astronomical events. An ancient Greek hand-powered mechanical device for predicting astronomical events has been recreated, offering a fresh understanding of how it worked. The 2,000-year-old Antikythera Mechanism is considered the world’s first analogue computer, used to forecast positions of the sun, moon and the planets, as well as lunar and solar eclipses. It was first discovered in a Roman-era shipwreck in 1901 by Greek sponge divers near the Mediterranean island of Antikythera. Only 82 fragments have survived – about a third of the entire astronomical calculator – leaving researchers baffled about its true form and capabilities. The back of the mechanism was solved by previous studies but the gearing system at the front has remained a mystery, until now. Scientists from University College London (UCL) believe they have finally cracked this complex 3D puzzle using computer modelling, pushing research a step closer to understanding the full power of the Antikythera Mechanism and how accurately it was able to predict astronomical events. Lead author, Professor Tony Freeth, said: “Ours is the first model that conforms to all the physical evidence and matches the descriptions in the scientific inscriptions engraved on the Mechanism itself. “The sun, moon and planets are displayed in an impressive tour de force of ancient Greek brilliance.” The largest surviving fragment, called Fragment A, displays features of bearings, pillars and a block. Another, known as Fragment D, shows an unexplained disk, 63-tooth gear and plate. Inscriptions on the back cover include a description of the cosmos display, with the planets moving on rings and indicated by marker beads, which scientists set out to reconstruct. Using previous X-ray data and an ancient Greek mathematical method, they were able to explain how the cycles for Venus and Saturn were derived, as well as recovering the cycles of all the other planets, where the evidence was missing. Their findings were published in the Scientific Reports journal.
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#3167 |
Ain't no relax!
Join Date: Sep 2005
Casino cash: $998919
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Soon.....
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Posts: 48,137
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#3168 |
(Sir/Yes Sir/Aye Aye Sir)
Join Date: Oct 2009
Location: Diving
Casino cash: $2615380
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That SUCKS!!
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. #J24 #Kameltoe Is A Joke Of A VPOTUS and POTUS Candidate #President Trump loves and supports the constitution #McCarthy is a Sellout and Traitor to America #TheFBLieIsCorrupt #DefundTheFBI #The FBI Is Not The Police #PresidentBidenIsMoronic #LizCheneyGotTheBoot #FJB #80,000,000 Mules (and a few Americans too) Voted For COVID To Continue #I still don't have COVID |
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#3169 |
Ain't no relax!
Join Date: Sep 2005
Casino cash: $998919
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Math is such a pain in the ass....
![]() Boeing 787s must be turned off and on every 51 days to prevent 'misleading data' being shown to pilots The US Federal Aviation Administration has ordered Boeing 787 operators to switch their aircraft off and on every 51 days to prevent what it called "several potentially catastrophic failure scenarios" – including the crashing of onboard network switches. The airworthiness directive, due to be enforced from later this month, orders airlines to power-cycle their B787s before the aircraft reaches the specified days of continuous power-on operation. The power cycling is needed to prevent stale data from populating the aircraft's systems, a problem that has occurred on different 787 systems in the past. According to the directive itself, if the aircraft is powered on for more than 51 days this can lead to "display of misleading data" to the pilots, with that data including airspeed, attitude, altitude and engine operating indications. On top of all that, the stall warning horn and overspeed horn also stop working. This alarming-sounding situation comes about because, for reasons the directive did not go into, the 787's common core system (CCS) stops filtering out stale data from key flight control displays. That stale data-monitoring function going down in turn "could lead to undetected or unannunciated loss of common data network (CDN) message age validation, combined with a CDN switch failure". Solving the problem is simple: power the aircraft down completely before reaching 51 days. It is usual for commercial airliners to spend weeks or more continuously powered on as crews change at airports, or ground power is plugged in overnight while cleaners and maintainers do their thing.
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#3170 |
Supporter
Join Date: Jan 2014
Location: Missouri
Casino cash: $679542
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Thought this was a pretty cool find. World's oldest cave paintings discovered, at least 44,000 years old
https://www.bbc.com/news/world-asia-55657257 |
Posts: 5,241
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#3171 |
Live free or die hard
Join Date: Sep 2000
Location: Durango, CO
Casino cash: $1528382
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#3172 | |
MVP
Join Date: Jul 2001
Location: Newport, Or
Casino cash: $1327000
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Quote:
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Posts: 14,743
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#3173 |
World's finest morphius
Join Date: Aug 2000
Casino cash: $6545027
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Posts: 25,994
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#3174 |
NFL's #1 Ermines Fan
Join Date: Jul 2001
Location: My house
Casino cash: $2008491
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I hope you can get to the 12,000 foot ceiling in less than 5 minutes. Otherwise, it could end poorly.
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Active fan of the greatest team in NFL history. |
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#3175 |
The Beast Inside Your Head
Join Date: Jul 2006
Location: Parts Unknown
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And with that video time to close the 1st contact thread.
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#3176 |
Has a particular set of skills
Join Date: Dec 2003
Location: On the water
Casino cash: $1778962
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Tiny Particles Power Chemical Reactions
A new material made from carbon nanotubes can generate electricity by scavenging energy from its environment. MIT engineers have discovered a new way of generating electricity using tiny carbon particles that can create a current simply by interacting with liquid surrounding them. The liquid, an organic solvent, draws electrons out of the particles, generating a current that could be used to drive chemical reactions or to power micro- or nanoscale robots, the researchers say. “This mechanism is new, and this way of generating energy is completely new,” says Michael Strano, the Carbon P. Dubbs Professor of Chemical Engineering at MIT. “This technology is intriguing because all you have to do is flow a solvent through a bed of these particles. This allows you to do electrochemistry, but with no wires.”
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Mind you own damn business |
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#3177 | |
Supporter
Join Date: Aug 2000
Casino cash: $8328275
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Quote:
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We need the kind of courage that can withstand the subtle corruption of the cynics - E.W. |
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#3178 | |
Has a particular set of skills
Join Date: Dec 2003
Location: On the water
Casino cash: $1778962
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Quote:
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Mind you own damn business |
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#3179 |
Ain't no relax!
Join Date: Sep 2005
Casino cash: $998919
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Between 1986 and 2007, all cosmonauts were equipped with a triple-barreled pistol, in case they encountered bears upon landing...
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#3180 |
Banned
Join Date: Jan 2013
Casino cash: $9998560
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It's so hot in Dubai that the government is artificially creating rainstorms FFF; border:0; border-radius:3px; box-shadow:0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width:540px; min-width:326px; padding:0; width:99.375%; width:-webkit-calc(100% - 2px); width:calc(100% - 2px);"> FFFFFF; line-height:0; padding:0 0; text-align:center; text-decoration:none; width:100%;" target="_blank"> 3897f0; font-family:Arial,sans-serif; font-size:14px; font-style:normal; font-weight:550; line-height:18px;"> View this post on Instagram FFF; border:0; border-radius:3px; box-shadow:0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width:540px; min-width:326px; padding:0; width:99.375%; width:-webkit-calc(100% - 2px); width:calc(100% - 2px);"> FFFFFF; line-height:0; padding:0 0; text-align:center; text-decoration:none; width:100%;" target="_blank"> 3897f0; font-family:Arial,sans-serif; font-size:14px; font-style:normal; font-weight:550; line-height:18px;"> View this post on Instagram https://www.cbsnews.com/news/dubai-u...cloud-seeding/ Last edited by eDave; 07-22-2021 at 11:06 PM.. |
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