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| IT security: Computer attacks with laser light Posted: 21 Dec 2021 07:27 AM PST Computer systems that are physically isolated from the outside world (air-gapped) can still be attacked. This is demonstrated by IT security experts. They show that data can be transmitted to light-emitting diodes of regular office devices using a directed laser. With this, attackers can secretly communicate with air-gapped computer systems over distances of several meters. In addition to conventional information and communication technology security, critical IT systems need to be protected optically as well. |
| Comets’ heads can be green, but never their tails. After 90 years, we finally know why Posted: 20 Dec 2021 04:06 PM PST A study has solved a 90-year-old mystery by proving the mechanism by which dicarbon -- the chemical that makes some comets' heads green -- is broken up by sunlight. This explains why the vibrant green color never reaches the comet's tail. |
| Could acid-neutralizing life-forms make habitable pockets in Venus’ clouds? Posted: 20 Dec 2021 04:06 PM PST A new study supports the longstanding idea that if life exists, it might make a home in Venus' clouds. The study's authors identified a chemical pathway by which life could neutralize Venus' acidic environment, creating a self-sustaining, habitable pocket in the clouds. |
| Speeding the development of fusion energy Posted: 20 Dec 2021 04:06 PM PST Profile of path-setting method to simulate the crazy-quilt movement of free electrons during experimental efforts to harness on Earth the fusion power that drives the sun and stars. The method cracks a complex equation that can enable improved control of the random and fast-moving moving electrons in the fuel for fusion energy. |
| Engineers produce the world’s longest flexible fiber battery Posted: 20 Dec 2021 10:13 AM PST Researchers have developed a rechargeable lithium-ion battery in the form of ultra-long fiber that could be woven into fabrics. The battery could enable a wide variety of wearable electronic devices, and might even be used to make 3D-printed batteries in virtually any shape. |
| Are black holes and dark matter the same? Posted: 20 Dec 2021 09:08 AM PST Astrophysicists suggest that primordial black holes account for all dark matter in the universe. |
| Consciousness in humans, animals and artificial intelligence Posted: 20 Dec 2021 09:07 AM PST A new theory of consciousness provides experimental access to the study of this phenomenon. Not just in humans. |
| Solar power: 'Wonder material' phosphorene nanoribbons live up to hype in first demonstration Posted: 20 Dec 2021 09:07 AM PST Researchers have incorporated phosphorene nanoribbons into new types of solar cells, dramatically improving their efficiency. |
| Sugar-coated COVID-19 test strip takes advantage of coronavirus' sweet tooth Posted: 15 Dec 2021 10:27 AM PST A sugar-coated COVID-19 test strip is effective at detecting all known coronaviruses, including variants, according to a new study. |
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