Röntgenstrålning.saxat från Kodaks info.

[gundj]

To avoid potential for damage, Eastman Kodak Company advises travelers to pack film and one-time-use cameras in their carry on luggage.

A growing number of airports are installing high intensity X-ray scanners to inspect checked baggage for security reasons," said Matthias Freund, president of Kodak's Consumer Imaging products and services operations. "These newer systems will damage unprocessed film, which will not be seen until the pictures are developed. The same holds true for one-time-use cameras."
In addition to following these travel tips, consumers should consider processing exposed film locally before returning home.

 

[björner]

Har sett stora röntgenapparater typ datortomografer på flygplatser i USA, där man röntgar bagaget (alltså inte handbagaget), och där är det fråga om "stark" strålning som skadar film enligt informationstavlorna.
Förvara därför filmerna i handbagaget, inte i resväskan (som dessutom förmodligen kommer bort på Heathrow).