Cancan.ro
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Inspirat de avioanele pentru spionaj „invizibile” la undele radar, un nou tip de autocolant prevăzut cu elemente absorbante din metal-lichid funcţionează ca o barieră împotriva undelor radio, obiectele acoperite cu acesta devenind practic invizibile în domeniul de frecvenţă pentru care radarul este acordat.
Materialul anti-radar creat de un grup de cercetători ai Iowa State University foloseşte o serie de inele rezonatoare acordate pentru a absorbi undele radio în banda de 8-10 GHz, cum sunt cele folosite cu sistemele de detecţie Radar. Cu o eficienţă de până la 75%, filtrul anti-radar converteşte undele radio în semnale electrice oscilante, disipându-le energia înainte de a putea fi reflectate înapoi către sursă.
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