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Mica Milovanovic:

Miguel Alcubierre se ponovo javlja, s unapređenim dizajnom

Meho Krljic:
Nije pogon al jeste ekonomija i društveno uređenje:

A ‘Star Trek’ Future Might Be Closer Than We Think

--- Quote ---Set against some of the biggest sci-fi franchises of the last five years, many of which imagine the future as a wreckage in which the strong prey relentlessly upon the weak, “Star Trek” can seem kind of quaint. After all, the show, especially in its second and strongest incarnation, “The Next Generation,” takes place in a time when, essentially, everything has worked out.
But it is precisely this quality that interests Manu Saadia, the author of “Trekonomics,” a forthcoming book about the economics of the “Star Trek” universe. The book, which grew in part out of conversations between Mr. Saadia and his friend Chris Black, a former writer for “Star Trek: Enterprise,” will be sold through the publishing platform Inkshares. It examines “Star Trek’”s “post-economic” system, in which money no longer exists and anything you want can be made in a replicator, essentially for free.
When everything is free, said Mr. Saadia, objects will no longer be status symbols. Success will be measured in achievements, not in money: “You need to build up your reputation, you need to be a fantastic person, you need to be the captain.” People will work hard to reach those goals, even though they don’t need a paycheck to live.
Felix Salmon, a senior editor at Fusion whose imprint at Inkshares will publish “Trekonomics,” says not everyone would strive for greatness in a post-money economy. In general, society might look more like present-day New Zealand, which he sees as less work-obsessed than the United States: “You work to live rather than the other way round.”
In a time of rising inequality and stagnating wages, a world where everyone’s needs are met and people only work if they feel like it seems pretty far away. But, said Mr. Saadia, a post-scarcity economy is actually far more within reach than the technological advances for which “Star Trek” is better known. Warp drive isn’t coming any time soon, if ever, he explained, but wealthy retirees today already live an essentially post-money existence, “traveling and exploring and deepening their understanding of the world and being generally happy.”
If productivity growth continues, he believes there will be much more wealth to go around in a few hundred years’ time. Whether those gains will be distributed equally is an open question. But for Mr. Saadia, “Star Trek” offers a way of imagining what would happen to life and work if they were.
The function of science fiction, he said, “is not so much to predict the future,” but “to provoke a critical reflection on the present.” And maybe understanding Trekonomics can help us consider what it would take to bring about a world where technological advances allowed everyone to lead comfortable and meaningful lives, rather than enriching a lucky few. If nothing else, it’s a great excuse for watching “Star Trek.”

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Meho Krljic:
 In a new round of testing, NASA confirms yet again that the 'impossible' EMdrive thruster works

--- Quote ---Engineer Roger Shawyer’s controversial EM Drive thruster jets back into relevancy this week, as a team of researchers at NASA’s Eagleworks Laboratories recently completed yet another round of testing on the seemingly impossible tech. Though no official peer-reviewed lab paper has been published yet, and NASA institutes strict press release restrictions on the Eagleworks lab these days, engineer Paul March took to the NASA Spaceflight forum to explain the group’s findings. In essence, by utilizing an improved experimental procedure, the team managed to mitigate some of the errors from prior tests — yet still found signals of unexplained thrust.
Isaac Newton should be sweating.
Flying in the face of traditional laws of physics, the EM Drive makes use of a magnetron and microwaves to create a propellantless propulsion system. By pushing microwaves into a closed, truncated cone and back towards the small end of said cone, the drive creates the momentum and force necessary to propel a craft forward. Because the system is a reactionless drive, it goes against humankind’s fundamental comprehension of physics, hence its controversial nature.
On the NASA spaceflight forums, March revealed as much as he could about the advancements that have been made with EM Drive and its relative technology. After apologizing for not having the ability to share pictures or the supporting data from a peer-reviewed lab paper, he starts by explaining (as straightforward as rocket science can get) that the Eagleworks lab successfully built and installed a 2nd generation magnetic damper which helps reduce stray magnetic fields in a vacuum chamber. The addition reduced magnetic fields by an order of magnitude inside the chamber, and also decreased Lorentz force interactions.
However, despite ruling out Lorentz forces almost entirely, March still reported a contamination caused by thermal expansion. Unfortunately, this reported contamination proves even worse in a vacuum (i.e. outer space) due in large part to its inherently high level of insulation. To combat this, March acknowledged the team is now developing an advanced analytics tool to assist in the separation of the contamination, as well as an integrated test which aims to alleviate thermally induced errors altogether.
Related: Explaining EM Drive, the ‘physics-defying’ thruster even NASA is puzzled over
While these advancements and additions are no doubt a boon for continued research of the EM Drive, the fact that the machine still produced what March calls “anomalous thrust signals” is by far the test’s single biggest discovery. The reason why this thrust exists still confounds even the brightest rocket scientists in the world, but the recurring phenomenon of direction-based momentum does make the EM Drive appear less a combination of errors and more like a legitimate answer to interstellar travel.
At this time, it’s unknown when Eagleworks Laboratories intends to officially publish its peer-reviewed paper, however, hearing of the EM Drive’s advancements from one of its top engineers bodes well for the future of this fascinating tech.

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Meho Krljic:
Electric sails are potentially more effective than light sails near most stars


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