يوضح مشروع عملي جديد كيفية بناء جهاز إرسال واستقبال راديو بسيط باستخدام أدوات منزلية شائعة مثل ورق الألمنيوم.
يوضح الدليل أن إشارات الراديو لا تزال تشكل عنصراً أساسياً في التكنولوجيا اليومية، بدءاً من راديو السيارات وأبراج الهواتف المحمولة وصولاً إلى أنظمة تحديد المواقع العالمي (GPS) وتقنيات الواي فاي والبلوتوث. ويشير الدليل إلى أن ما يسمى بالعصر الذهبي للراديو لم ينتهِ حقاً في خمسينيات القرن الماضي، لأن التلفزيون وخدمات اللاسلكي الحديثة لا تزال تعتمد على الموجات ذاتها.
من إعداد الذكاء الاصطناعي صورة مولدة بواسطة الذكاء الاصطناعي
Physicists at MIT have developed a new microscope using terahertz light to directly observe hidden quantum vibrations inside a superconducting material for the first time. The device compresses terahertz light to overcome its wavelength limitations, revealing frictionless electron flows in BSCCO. This breakthrough could advance understanding of superconductivity and terahertz-based communications.
Researchers at the SETI Institute suggest that solar wind and plasma from stars could distort radio signals from distant intelligent life, making them harder to detect. This means past searches may have overlooked potential evidence by focusing on narrowband signals. Adjusting detection methods could improve future chances of discovery.
من إعداد الذكاء الاصطناعي
A team from Xidian University has developed a car-mounted microwave wireless power system that kept fixed-wing drones airborne for up to 3.1 hours. The system uses GPS positioning, dynamic tracking, and onboard flight controls to maintain alignment between the emitter and drone during flight. The findings were published on March 25 in the peer-reviewed journal Aeronautical Science & Technology.
Physicists at New York University have developed a new type of time crystal using sound waves to suspend tiny styrofoam beads, resulting in nonreciprocal interactions that defy Newton's third law of motion. The compact, visible system oscillates in a steady rhythm and was detailed in Physical Review Letters. Researchers suggest potential applications in quantum computing and insights into biological rhythms.
من إعداد الذكاء الاصطناعي
Scientists have developed a light-based sensor that can identify tiny amounts of cancer biomarkers in blood samples, potentially enabling earlier detection than traditional scans. The technology combines DNA nanostructures, CRISPR, and quantum dots to produce a clear signal from just a few molecules. Tests on lung cancer patient serum showed promising results at sub-attomolar levels.
Physicists at MIT have developed a theoretical technique inspired by the film Interstellar to send messages backwards in time using quantum entanglement. The approach mimics closed time-like curves and surprisingly improves communication through noisy channels. While actual time travel remains impossible, the idea could enhance conventional systems.