I'm writing a short story and I had the idea of someone sending a postcard from an area with high radioactivity. Firstly, could the postcard hold the radiation or is paper not a substance that could hold radiation. Secondly, what medical effects would the postcard have on the receiver?Radiation: Can a postcard hold radiation and if so what would the effects be?
only a small amount, and that would be due to some elements in the cardboard that become transmuted and made radioactive from the exposure. Probably too low to be measured, but it depends on the exposure and on the materials involved. Other possibility is radioactive dust could adhere to the surface, but that would tend to rub off in transit.
That is the only way anything becomes radioactive, there is no such thing as "holding radiation".
Oh, exceptions: a person or animal could inhale or ingest radioactive material, or your skin or clothes could become contaminated with radioactive dust.
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