Lifeboat Foundation

Turbulence plays a key role in our daily lives, making for bumpy plane rides, affecting weather and climate, limiting the fuel efficiency of the cars we drive, and impacting clean energy technologies. Yet, scientists and engineers have puzzled at ways to predict and alter turbulent fluid flows, and it has long remained one of the most challenging problems in science and engineering.

Now, physicists from the Georgia Institute of Technology have demonstrated—numerically and experimentally—that turbulence can be understood and quantified with the help of a relatively small set of special solutions to the governing equations of fluid dynamics that can be precomputed for a particular geometry, once and for all.

“For nearly a century, turbulence has been described statistically as a random process,” said Roman Grigoriev. “Our results provide the first experimental illustration that, on suitably short time scales, the dynamics of turbulence is deterministic—and connects it to the underlying deterministic governing equations.”

When astronomers use radio telescopes to gaze into the night sky, they typically see elliptical-shaped galaxies, with twin jets blasting from either side of their central supermassive black hole. But every once in a while—less than 10% of the time—astronomers might spot something special and rare: An X-shaped radio galaxy, with four jets extending far into space.

Although these mysterious X-shaped radio galaxies have confounded astrophysicists for two decades, a new Northwestern University study sheds new insight into how they form—and its surprisingly simple. The study also found that X-shaped radio galaxies might be more common than previously thought.

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The U.S. Federal Trade Commission (FTC) on Monday said it filed a lawsuit against Kochava, a location data broker, for collecting and selling precise geolocation data gathered from consumers’ mobile devices.

The complaint alleges that the U.S. company amasses a “wealth of information” about users by purchasing data from other data brokers to sell to its own clients.

“Kochava then sells customized data feeds to its clients to, among other purposes, assist in advertising and analyzing foot traffic at stores or other locations,” the FTC said. “Among other categories, Kochava sells timestamped latitude and longitude coordinates showing the location of mobile devices.”

The U.S. Federal Bureau of Investigation (FBI) is warning investors that cybercriminals are increasingly exploiting security vulnerabilities in Decentralized Finance (DeFi) platforms to steal cryptocurrency.

“The FBI has observed cyber criminals exploiting vulnerabilities in the smart contracts governing DeFi platforms to steal investors’ cryptocurrency,” the federal law enforcement agency said.

“The FBI encourages investors who suspect cyber criminals have stolen their DeFi investments to contact the FBI via the Internet Crime Complaint Center or their local FBI field office.”

The oldest law of genetics says that gametes combine randomly, but experiments hint that sometimes eggs select sperm actively for their genetic assets.

A safe and effective way to reverse cellular aging in mice.

After heavy national investment in semiconductors to break a dependence on global chips, Mr. Xi seems unhappy with the results.

What is the real reason the NASA Artemis I Launch got scrubbed on 29 Aug 21? NASA made a valiant attempt to launch the SLS Artemis I Moon Rocket this morning, but it was not to be. The launch was scrubbed. Get the real skinny here.

Worm-hole generators by the pound mass: https://greengregs.com/

Continue reading “The Real Reason the Artemis I Launch Was Scrubbed” »