Radios in tunnels
February 27, 2005 6:27 PM Subscribe
Why, when driving through a tunnel, does my FM radio receive noise, and not silence, when it loses the signal?
posted by Mwongozi to Science & Nature (17 answers total)
I can understand static in other places, there's plenty of EM noise around, but shouldn't the tunnel shield any noise as well as the signal I'm trying to receive?