Let's Save a Vital National Media Resource: AM Radio
It has been all too easy for the receiver manufacturers to simply reduce overall receiver bandwidths down to even 2–3 kHz to address the pervasive issues of electromagnetic interference (EMI) noise from power lines, fluorescent-lamp ballasts, personal …
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Tailored flexible illusion coatings hide objects from detection
… tags work or could redistribute energy in different, controlled patterns making things more visible rather than less visible. The materials shielding ability can also be used to protect any type of equipment from stray or intentional …
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