No. Although that was the original logic in making up the term. Radioactivity now means that the "source" (the radioactive substance) emits (gives off) energy of some sort. Gama-rays are radiation of...
Radio waves are reflected by many solid objects, such as wood, stone, and notably metal, allowing the use of microwaves in radar applications.Also importantly in broadcast radio, the ionosphere (an...
Question: Why do low freqs reflect from the ionosphere while high freqs go straight thru? ANS:- ANSWER: -for the same reason that high freqs can pass thru a parabolic dish of screen but the low freq...
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