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Feb 17, 2023
Dark energy could be created inside black holes, scientists claim
Posted by Kelvin Dafiaghor in category: cosmology
Nothing sucks more than a supermassive black hole, but according to a group of researchers, the enormous objects found at the heart of many galaxies may be driving the expansion of the cosmos.
The radical claim comes from an international team who compared growth rates of black holes in different galaxies. They conclude that the spread of masses observed could be explained by black holes bearing cores of “dark energy”, the mysterious force behind the accelerating expansion of the universe.
Feb 17, 2023
To Teach Computers Math, Researchers Merge AI Approaches
Posted by Kelvin Dafiaghor in categories: mathematics, robotics/AI
Large language models still struggle with basic reasoning tasks. Two new papers that apply machine learning to math provide a blueprint for how that could change.
Feb 17, 2023
The Science of Living Forever (or a Really, Really Long Time)
Posted by John Davies in categories: government, life extension, philosophy, science
“The inevitability of death is what makes life worth living.” — Henry.
“Would we need to extend the years everyone should continue to be in the workforce, in order to pay for those not contributing?” — Marianne.
“Imagine you have people with all the prejudices they grew up with and they never die. Or you have someone who is a dictator and they get to live forever and be dictator forever. Or you have Congress where you have 80 and 90 year olds holding office forever but now they never die so nobody new can take over.” — Avram.
Feb 17, 2023
Curious about quantum?
Posted by Jose Ruben Rodriguez Fuentes in categories: futurism, quantum physics
As “Ant-Man and the Wasp: Quantumania” hits theaters, learn about the future of quantum and NSF efforts to advance the quantum future.
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Feb 17, 2023
This Historic Gravitational Wave Discovery Created a Perfectly Spherical Blast
Posted by Atanas Atanasov in categories: physics, space
The game-changing neutron star merger of August 2017 created a ‘perfect’ explosion, according to a new study.
The blast behind the historic gravitational wave astronomy discovery of August 2017 had a perfect spherical shape, according to a new study.
Continue reading “This Historic Gravitational Wave Discovery Created a Perfectly Spherical Blast” »
Feb 17, 2023
A new elastic polymer dielectric to create wafer-scale stretchable electronics
Posted by Jose Ruben Rodriguez Fuentes in categories: computing, transportation, wearables
Over the past few years, material scientists and electronics engineers have been trying to fabricate new flexible inorganic materials to create stretchable and highly performing electronic devices. These devices can be based on different designs, such as rigid-island active cells with serpentine-shape/fractal interconnections, neutral mechanical planes or bunked structures.
Despite the significant advancements in the fabrication of stretchable materials, some challenges have proved difficult to overcome. For instance, materials with wavy or serpentine interconnect designs commonly have a limited area density and fabricating proposed stretchable materials is often both difficult and expensive. In addition, the stiffness of many existing stretchable materials does not match that of human skin tissue, making them uncomfortable on the skin and thus not ideal for creating wearable technologies.
Researchers at Sungkyunkwan University (SKKU), Institute for Basic Science (IBS), Seoul National University (SNU), and Korea Advanced Institute of Science and Technology (KAIST) have recently fabricated a vacuum-deposited elastic polymer for developing stretchable electronics. This material, introduced in Nature Electronics, could be used to create stretchy field-effect transistors (FETs), which are primary components of most electronic devices on the market today.
Feb 17, 2023
Chromo-encryption method uses color to encode information
Posted by Jose Ruben Rodriguez Fuentes in categories: encryption, nanotechnology, security
In a new approach to security that unites technology and art, EPFL researchers have combined silver nanostructures with polarized light to yield a range of brilliant colors, which can be used to encode messages.
Cryptography is something of a new field for Olivier Martin, who has been studying the optics of nanostructures for many years as head of the Nanophotonics and Metrology Lab EPFL’s School of Engineering. But after developing some new silver nanostructures in collaboration with the Center of MicroNanoTechnology, Martin and Ph.D. student Hsiang-Chu Wang noticed that these nanostructures reacted to polarized light in an unexpected way, which just happened to be perfect for encoding information.
They found that when polarized light was shone through the nanostructures from certain directions, a range of vivid and easily-identifiable colors was reflected back. These different colors could be assigned numbers, which could then be used to represent letters using the electronic communication standard code ASCII (American Standard Code for Information Interchange). To encode a secret message, the researchers applied a quaternary code using the digits 0, 1, 2 and 3 (as opposed to the more commonly used binary code 0 and 1). The result was a series of four-digit strings composed of different color combinations that could be used to spell out a message, and the method of chromo-encryption was born.
Feb 17, 2023
Previously Unseen Auroras Found Dazzling Over Galilean Jupiter Moons; What Are These Ethereal Glows?
Posted by Dan Breeden in category: space
Astronomers spotted auroras for the first time on two of the biggest Galilean moons of Jupiter. New features of Io and Europa’s auroras have also been discovered.
Previously Unseen Auroras Dazzling Over Galilean Jupiter Moons