Want one more option for home internet? Today it was announced that Amazon is planning to launch 3,236 satellites to build a network to provide global high-speed internet. Unlike current satellite internet, these devices will be in a far lower orbit and offer far faster speeds compared to current sa…
“This is the first clear demonstration of controlling the speed of a pulse light in free space,” Abouraddy said in the statement. “And it opens up doors for many applications, an optical buffer being just one of them, but most importantly it’s done in a simple way, that’s repeatable and reliable.”
READ MORE: Researchers develop way to control speed of light, send it backward [Phys.org]
More on light: New NASA Animations Show How Slowly Light Travels Through Space.
According to a report in the official magazine of its Defense Ministry, Russian “supersoldiers” are able to use “parapsychology” techniques to crash enemy computers, access the minds of foreign soldiers, and read documents inside locked safes — abilities they gained, according to the article, from telepathic dolphins they can now communicate with.
The report is almost certainly nonsense. But it does raise questions about the ambitions — and perhaps dysfunctions — of Russia’s military.
Most Hackaday readers are no doubt familiar with the Faraday cage, at least in name, and nearly everyone owns one: if you’ve ever stood watching a bag of popcorn slowly revolve inside of a microwave, you’be seen Michael Faraday’s 1836 invention in action. Yet despite being such a well known device, the average hacker still doesn’t have one in their arsenal. But why?
It could be that there’s a certain mystique about Faraday cages, an assumption that their construction requires techniques or materials outside the realm of the home hacker. While it’s true that building a perfect Faraday cage for a given frequency involves math and careful attention to detail, putting together a simple model for general purpose use and experimentation turns out to be quick and easy.
As an exercise in minimalist hacking I recently built a basic Faraday cage out of materials sourced from Home Depot, and thought it would be interesting to not only describe its construction but give some ideas as to how one can put it to practical use in the home lab. While it’s hardly a perfect specimen, it clearly works, and it didn’t take anything that can’t be sourced locally pretty much anywhere in the world.
Circa 2012
Switching your phone off for important meetings or trips to the cinema can be a pain in the ass. Victor Johansson has a solution, though: he’s designed the Escape Jacket, which features a Faraday cage in the inside pocket to immediately take your phone off the grid.
UK-based designer Johansson says that the concept is all about you-time. He explains:
Continue reading “This Jacket’s Faraday Cage Conveniently Silences Your Phone” »
Cancer cells are generally much more metabolically active than healthy cells, so some insight into a cancer cell’s behavior and type can be gathered by analyzing its metabolic activity. But getting an accurate assessment of metabolic activity has proven difficult. Several methods, including position emission tomography (or PET) scans, fluorescent dyes, and contrast agents have been used, but each is limited it is usefulness.
Researchers combine PAM and OCR to more quickly measure cancer-cell metabolisms.
Circa 2014
French director, Luc Besson, talks to GQ ahead of the UK release of action-thriller Lucy.
Continue reading “GQ talks to Luc Besson, the director who got inside Scarlett Johansson’s brain” »
Conventional DNA is comprised of the familiar A, C, G, and T base pairs, but a newly created genetic system is packed with eight, thus doubling the number of letters normally found in self-replicating molecules. Intriguingly, the new system, dubbed “hachimoji,” could resemble the building blocks of extraterrestrial life.
New research published yesterday in Science describes the hachimoji, which means “eight letters” in Japanese. In addition to the conventional four base pairs, this genetic system has an extra four building blocks, dramatically increasingly the information density compared to regular DNA. The scientists behind the work, led by Steven Benner from the Foundation for Applied Molecular Evolution in Alachua, Florida, said the new system may be robust enough to support life, that is, to support the processes required for Darwinian self-replication.
A University of California Irvine student may have stumbled upon an invention to end your phone-charging woes for good. And that’s just the tip of the iceberg of where that could take us as a society. Forget about your phone; the world would be a different place without ever having to worry about replacing car batteries, and imagine the uses that it could have in space exploration. Technology is the ultimate wildcard.
A battery that lasts a whole lifetime is now one step closer to becoming a reality thanks to Mya Le Thai, a PhD student who’s been researching how to make better nanowire rechargeable batteries. In theory, her discovery could lead to a battery that lasts centuries—as long as 400 years.
Continue reading “UCI Student ‘Accidentally’ Invents a Rechargeable Battery That Lasts 400 Years” »
