विज्ञान समाचार

During a thunderstorm, you can feel rain pouring, see lightning flashing and hear wind howling. Unlike these phenomena, the Aurora Borealis cannot be heard or felt because it occurs through the earth's magnetic field's invisible influence, noticeable only if you seek it out.

A team of sustainable energy engineers at The Hong Kong University of Science and Technology, working with a pair of colleagues from the GD MIDEA Air-Conditioning Equipment Co., LTD., in China, has developed a personalized cooling apparatus to replace traditional air-conditioning.

Imagine a future where internet connections are not only lightning-fast but also remarkably reliable, even in crowded spaces. This vision is rapidly approaching reality, thanks to new research on terahertz communications technologies. These innovations are set to transform wireless communication, particularly as communications technology advances toward the next generation of networks, 6G.

On a remote patch of the windy, frozen Beaufort Sea north of Alaska, engineers from NASA's Jet Propulsion Laboratory in Southern California huddled together, peering down a narrow hole in a thick layer of sea ice. Below them, a cylindrical robot gathered test science data in the frigid ocean, connected by a tether to the tripod that had lowered it through the borehole.

A team of scientists has unlocked the potential of 6G communications with a new polarization multiplexer. Terahertz communications represent the next frontier in wireless technology, promising data transmission rates far exceeding current systems.

A scintillating aerogel enabling real-time measurements with excellent sensitivity to certain radioactive gases, essential to monitoring the proper functioning of nuclear power plants, has just been developed by a group of physicists, chemists, and meteorologists from the CNRS, the University Claude Bernard Lyon, the CEA, and the ENS de Lyon.

The cost effectiveness of wind farms could be significantly improved by reducing the speed of wind turbines that are clustered together, which could improve their longevity and also reduce noise pollution.

Much of the nation's stormwater infrastructure, designed decades to a century ago to prevent floods, can exacerbate flooding during the severe weather events that are increasing around the globe, new research led by the University of Michigan demonstrates.

Researchers at Tohoku University have successfully increased the capacity, lifetime durability, and cost-effectiveness of a capacitor in their pursuit of a more power-efficient future. The research is published in the journal ACS Applied Materials & Interfaces.

If only techno-optimists get to test AI tools, the results simply aren't good enough. This is where Tesla made a big mistake—a lesson that the health sector will do well to learn.

The UK on Tuesday said it had awarded a record 131 new green infrastructure projects in a single auction, including plans for Europe's two biggest offshore windfarms.

A new study has found that U.K. hotels and restaurants using humanlike service robots can make solo guests feel more comfortable in engaging with these robots by providing comfortable ambient conditions—including lighting, scents and sounds—and adding local cues like British flag designs on the robot's body.

वायरलेस सेंसिंग और संचार आधुनिक जीवन के अभिन्न अंग बन गए हैं।उनमें से, आगमन की दिशा (डीओए) अनुमान की प्रमुख तकनीक, जो आरएफ संकेतों की कोणीय दिशा को मापने के लिए सरणी सिग्नल प्रोसेसिंग तकनीकों का उपयोग करती है, को नागरिक और सैन्य दोनों डोमेन में व्यापक रूप से लागू किया गया है।

A French ship navigating past New York City to harbor laden with Champagne, Cognac and jam under sail might recall a long-forgotten age of wind navigation.

Analyzing and simulating fluid flow is a challenging mathematical problem that impacts various scenarios, including video game engines, ocean current modeling and hurricane forecasting. The core of this challenge lies in solving the Navier–Stokes equations, a set of classical equations that describe fluid dynamics.

General AI systems, like OpenAI's GPT, depend on large amounts of training data to improve model accuracy and performance. Research or medical AI applications, which often lack both training data and computing power, can leverage a new model designed to improve the efficiency, relevance and accuracy of AI outputs for more specialized scenarios.

In recent years, the Massively Parallel Computation (MPC) model has gained significant attention. However, most distributed and parallel graph algorithms in the MPC model are designed for static graphs. Dynamic graph algorithms can deal with graph changes more efficiently than the corresponding static graph algorithms. Moreover, a few parallel dynamic graph algorithms (such as the graph connectivity) in the MPC model have been proposed and shown superiority over their parallel static counterparts. However, there are no existing dynamic all-pairs shortest paths (APSP) algorithms working in the MPC model.

Scientists at the Daegu Gyeongbuk Institute of Science and Technology have created a fuel cell catalyst made from platinum and magnesium. The new catalyst, which uses the world's first platinum–magnesium alloy nanoparticles, is expected to be both highly efficient and durable, potentially offering significant improvements in clean energy technology.

आपने सौर ऊर्जा अपनाने का निर्णय क्यों लिया?क्या यह निवेश पर रिटर्न का एक गंभीर मूल्यांकन था?क्या आप अपने बिजली बिलों में कटौती करना चाहते हैं?क्या आप जलवायु परिवर्तन पर अपना योगदान देना चाहते हैं?

ईंधन सेल ऊर्जा-रूपांतरण समाधान हैं जो बिना दहन के विद्युत रासायनिक प्रतिक्रियाओं के माध्यम से बिजली उत्पन्न करते हैं, इस प्रकार पृथ्वी पर वायु के प्रदूषण में योगदान नहीं करते हैं।ये सेल इलेक्ट्रिक वाहनों से लेकर पोर्टेबल चार्जर और औद्योगिक मशीनों तक विभिन्न तकनीकों को शक्ति प्रदान कर सकते हैं।