Like many subsea drones, the 10-foot-long Icefin is shaped like a torpedo. It made headlines in 2014 as one of the prototype drones that plumbed the Antarctic as part of a NASA program to test the technology. Now, a new program called the Ross Ice Shelf and Europa Underwater Probe (RISE UP), NASA is funding three expeditions to put an upgraded Icefin under the ice. This was its first deployment..
Source: The Search for Aliens Starts Now—in Antarctica
When Icefin dove to the sea floor it found odd, feathery creatures waiting for them. “My favorite moments from the seafloor were our visits by crinoids…it was incredible to behold,” she says, referring to the to the odd, feathery dwellers that call Antarctica home.
This is CS50x, Harvard University’s introduction to the intellectual enterprises of computer science and the art of programming for majors and non-majors alike, with or without prior programming experience. An entry-level course taught by David J. Malan, CS50x teaches students how to think algorithmically and solve problems efficiently. Topics include abstraction, algorithms, data structures, encapsulation, resource management, security, software engineering, and web development. Languages include C, Python
Source: Introduction to Computer Science
But in Engare’s case, every massive, crisscrossing slew of curves and lines and patterns has already been proven out by the puzzles you’ve solved. Your reward for doing well in Engare isn’t unlocking more pattern-generation options; it’s the ability to understand the incredible combination of rotations and line patterns that went into each one and how they’re all geometrically solvable thanks to their adherence to X and Y axes.
Source: Engare review: The geometry of Islamic art becomes a treasure of a game | Ars Technica
Verdict: Buy two copies; donate the second one to a school computer lab.
Main site: http://www.engare.design/
Only $6 on Steam. I Will be trying it out on my Steam account.
Before committing any real money, the researchers tested the idea on 10 years of historical data on the closing odds and results of 479,440 soccer games played between 2005 and 2015. This simulation paid out 44 percent of the time and delivered a yield of 3.5 percent over the 10-year period. “For an imaginary stake of $50 per bet, this corresponds to an equivalent profit of $98,865 across 56,435 bets,” they say.
Source: The Secret Betting Strategy That Beats Online Bookmakers – MIT Technology Review
This year, the race regulations are a clear sign of how rapidly solar technology is changing. Teams have to use a smaller solar collector than before: cars in the Challenger class can have no more than 43 square feet of solar cells versus nearly 65 square feet for the previous race, in 2015. That’s half the area allowed on cars from the original 1987 race. In other words, technology is advanced enough now (both in solar cells and the underlying vehicle designs) that you don’t need a sea of panels to keep a car running.
Source: Solar car race kicks off 30th anniversary with a fresh challenge
Rotor sails rely on a bit of aerodynamics known as the Magnus effect. In the 1850s, German physicist Heinrich Gustav Magnus noticed that when moving through air a spinning object such as a ball experiences a sideways force. The force comes about as follows. If the ball were not spinning, air would stream straight past it, creating a swirling wake that would stretch out directly behind the ball like the tail of a comet. The turning surface of a spinning ball, however, drags some air with it. The rotation deflects the wake so that it comes off the ball at an angle, closer to the side of the ball that’s rotating into the oncoming air. Thanks to Isaac Newton’s third law that every action must have an equal and opposite reaction, the deflected wake pushes the ball in the opposite direction, toward the side of the ball that’s turning away from the oncoming air. Thus, the spinning ball gets a sideways shove.
Source: Spinning metal sails could slash fuel consumption, emissions on cargo ships
Under the gun, Smith and Boyle went into an office and, in one hour, emerged with the basic plans for the CCD, the sensor still used in digital photography today. A CCD works like this: Light hits a tiny grid of photosensitive silicon cells, each which build a charge proportional to the intensity of the light hitting it. This charge can be measured precisely and we can know exactly how bright that portion should be. Add filters, and color can be discerned too.
Source: In just one hour, two Bell Labs scientists had a breakthrough that won the Nobel prize — and changed photography forever
Physicist James Clerk Maxwell was perhaps the first to recognize that atoms could be used to keep time. In 1879 he wrote to electricity pioneer William Thomson, suggesting that the “period of vibration of a piece of quartz crystal” would be a better absolute standard of time than the mean solar second (based on the Earth’s rotation) but would still depend “essentially on one particular piece of matter” and therefore would be “liable to accidents.” Maxwell theorized that atoms would work even better as a natural standard of time. Thomson wrote in the second edition of the Elements of Natural Philosophy, published in 1879, that hydrogen atoms, sodium atoms, and others were “absolutely alike in every physical property” and “probably remain the same so long as the particle itself exists.”
Source: Device That Revolutionized Timekeeping Receives an IEEE Milestone – IEEE – The Institute
Globally, the price of solar panels has fallen 50% between 2016 and 2017, they write. And in countries with favorable wind conditions, the costs associated with wind power “can be as low as one-half to one-third that of coal- or natural gas-fired power plants.” Innovations in wind-turbine design are allowing for ever-longer wind blades; that boost in efficiency will also increase power output from the wind sector, according to Morgan Stanley.
Source: Renewable energy is becoming so cheap the US will meet Paris commitments even if Trump withdraws — Quartz
Mind the Bullshit Asymmetry Principle, articulated by the Italian software developer Alberto Brandolini in 2013: the amount of energy needed to refute bullshit is an order of magnitude bigger than that needed to produce it. Or, as Jonathan Swift put it in 1710, “Falsehood flies, and truth comes limping after it.”Plus ça change.
Source: How to Call B.S. on Big Data: A Practical Guide