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Saturday, March 13th, 2021
Time |
Event |
12:20a |
Scientists Unlock Mysteries of World's Oldest 'Computer' Scientists have used 3D computer modeling to figure out how the world's oldest "computer" worked. BBC reports: The Antikythera Mechanism has baffled experts since it was found on a Roman-era shipwreck in Greece in 1901. The hand-powered Ancient Greek device is thought to have been used to predict eclipses and other astronomical events. But only a third of the device survived, leaving researchers pondering how it worked and what it looked like. Scientists from University College London (UCL) believe they have finally cracked the puzzle using 3D computer modeling. They have recreated the entire front panel, and now hope to build a full-scale replica of the Antikythera using modern materials.
On Friday, a paper published in Scientific Reports revealed a new display of the gearing system that showed its fine details and complex parts. The mechanism has been described as an astronomical calculator as well as the world's first analogue computer. It is made of bronze and includes dozens of gears. The back cover features a description of the cosmos display, which shows the motion of the five planets that were known at the time the device was built. But only 82 fragments -- amounting to around a third of the device -- survived, This meant scientists have had to piece together the full picture using X-Ray data and an Ancient Greek mathematical method.
Read more of this story at Slashdot. | 1:40a |
'Reliable Robotics' Startup Wants To Fill the Skies With Cargo-Filled Robot Planes nickwinlund77 shares a report from Bloomberg: There's nothing unusual looking about the 38-foot-long cargo plane that's been flying around Northern California for the past month. But the insides of the Cessna 208 have undergone a sci-fi makeover, resulting in a plane that's been taxiing, taking off, maneuvering in the air, and landing without a pilot. The machinery and software that let it fly on its own come from a startup called Reliable Robotics Corp., which has spent four years working on autonomous flight. The company has a grand total of two planes, but its long-term plan is to fill the sky with pilotless aircraft transporting cargo and passengers.
Reliable's story begins with the self-doubt of its co-founder and Chief Executive Officer Robert Rose. His attempt to become a pilot in college ended for lack of money, but by 2016 he'd earned enough to give the cockpit another shot. Rose, who'd spent his career building autonomous cars and spacecraft for Tesla Inc. and SpaceX, expected that planes would have modernized since he last hopped in a cockpit. But the one he took up had decades-old technology. The shock of how much the flight still relied on a human pilot hit Rose midair as he contemplated his rusty skills and mortality. "My first thought was, 'Wow, it's insane that a private person is allowed to do this,'" he says. "You have all this navigation that you need to manage and all the communications you have to do between other planes and taking instructions from air traffic control. There's layers and layers of stuff. All the while, you are one mistake away from a fatal accident. I kept thinking, 'How is this OK?'"
Rose founded Reliable in 2017 with Juerg Frefel, an old buddy from SpaceX. The pair set up shop in Rose's garage in Los Altos, Calif., planning to make improved autopilot technology. They hoped to tap into the mechanical and positioning systems available on most planes, buy a couple of off-the-shelf sensors, and tie everything together with clever software that could make the types of decisions usually expected of pilots. Each step of the way, however, they discovered the existing gear for sale wasn't resilient enough for the job. "You just could not have a serious conversation about removing the human from the plane with these parts," Rose says. "That meant we had to build."
Read more of this story at Slashdot. |
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