Quote:
Originally Posted by Sydney's Mom
If the question is electromagnet waves, then why does my kindle matter. Of course, I don't have the wireless on, but the flight attendant says "anything with a battery" So, I place it in its case, on my lap, and read secretly. As I suspected, that is a rule just so the flight attendants don't have to make decisions - is it a phone, a music player, a game boy . . .
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Only narrowband electromagnetic interference is from wireless transmitting devices. Broadband EMI can be emitted from many electronic devices. Hence, the "anything with a battery", including your Kindle. Not only does a blanket rule prevent having to itemize "allowed items", it also covers the possibility of a malfunctioning device emitting more than the usual amount of EMI. (It's been a while since I studied this stuff, but I think I've got that right.)