Um novo projeto prático mostra como construir um transmissor e receptor de rádio simples usando itens domésticos comuns, como papel alumínio.
O guia explica que os sinais de rádio permanecem centrais para a tecnologia cotidiana, desde rádios automotivos e torres de celular até conexões GPS, Wi-Fi e Bluetooth. Ele observa que a chamada Era de Ouro do Rádio não terminou de fato na década de 1950, porque a televisão e os serviços sem fio modernos ainda dependem das mesmas ondas.
New warnings from researchers highlight how Wi-Fi technology could turn everyday routers into surveillance tools capable of identifying individuals.
Reportado por IA
Ultrathin terahertz filters developed from an accidental spin-off may expand capabilities in satellites, medical scanners and future 6G networks.
Researchers using the DAMPE space telescope have identified a shared spectral softening in cosmic rays across multiple particle types. The pattern appears at a rigidity of about 15 teraelectron-volts for protons through iron nuclei. This finding, published in Nature, offers new insight into how these high-energy particles behave in the galaxy.
Reportado por IA
Researchers from Kyoto University and Hiroshima University have created a new technique to identify W states, a complex form of quantum entanglement. The advance could support progress in quantum computing and communication.