Carbon-free fusion power could be ‘on the grid in 15 years’
Hannah Devlin Science correspondent.
Read more
When it comes to the future of space exploration, a number of new technologies are being investigated. Foremost among these are new forms of propulsion that will be able to balance fuel-efficiency with power. Not only would engines that are capable of achieving a great deal of thrust using less fuel be cost-effective, they will be able to ferry astronauts to destinations like Mars and beyond in less time.
This is where engines like the X3 Hall-effect thruster comes into play. This thruster, which is being developed by NASA’s Glenn Research Center in conjunction with the US Air Force and the University of Michigan, is a scaled-up model of the kinds of thrusters used by the Dawn spacecraft. During a recent test, this thruster shattered the previous record for a Hall-effect thruster, achieving higher power and superior thrust.
Hall-effect thrusters have garnered favor with mission planners in recent years because of their extreme efficiency. They function by turning small amounts of propellant (usually inert gases like xenon) into charged plasma with electrical fields, which is then accelerated very quickly using a magnetic field. Compared to chemical rockets, they can achieve top speeds using a tiny fraction of their fuel.
Read more
Electric thruster sucks in the scarce air molecules at the top of the Earth’s atmosphere, using them as propellant to fight drag.
Read more
VICE on HBO, Full Episode
Posted in employment, robotics/AI
Everyone is worried about robots stealing manufacturing jobs, but the real value (and threat) in robots may lie in whether they can become smart enough to actually think on their own.
One of the major milestones in creating human level intelligence is for machines to attain self-awareness. And Columbia University’s Creative Machines Lab may have already done it. “These robots learn overtime, to stimulate themselves in a future situation they haven’t actually experienced.” said Dr. Hod Lipson, the mechanical engineering professor leading the lab’s push to create self-aware robots.
“In other words, they don’t have to learn by doing,” Lipson told VICE News. “They can learn by thinking.”
The robotics department at UC Berkley has made similar advancements with their self-teaching robot BRETT. Using trial and error, BRETT can learn how to fold laundry, assemble LEGO blocks and fit pegs into a hole.
For weeks, digital clocks in Europe have been lagging behind. The unexpected source of the problem: Kosovo and Serbia, whose power grid operators can’t find common ground.
Clock radios and timers on microwaves and stoves have gotten out of sync in Europe in recent weeks. The reason: Coordination problems between the power grid operators of Kosovo and Serbia.
Since mid January power companies in Kosovo and Serbia have failed to mutually balance their electricity grids in the case of irregularities. According to the grid codes of the European Network of Transmission System Operators for Electricity (ENTSO-E), they are obliged to maintain a mean frequency of 50 hertz (oscillations per second) and help each other out if necessary.
Read more
