My trusty semidigital radio is gradually falling into disrepair, but it can still perform its fundamental task of turning radio waves into sound. But with the volume dial being permanently stuck on maximum, I'm forced to improvise to quieten it. Luckily studying physics at university has taught me the inverse square law, whereby doubling the distance from the source of a sound will quarter the intensity. So when my radio is 1 metre away and is ten times louder than I want it, whipping out my calculator it tells me that the radio needs to be placed on a table 3.16227 metres away. How convenient is that !Wednesday, June 4, 2014
Fixing a Radio with the Inverse Square Law
My trusty semidigital radio is gradually falling into disrepair, but it can still perform its fundamental task of turning radio waves into sound. But with the volume dial being permanently stuck on maximum, I'm forced to improvise to quieten it. Luckily studying physics at university has taught me the inverse square law, whereby doubling the distance from the source of a sound will quarter the intensity. So when my radio is 1 metre away and is ten times louder than I want it, whipping out my calculator it tells me that the radio needs to be placed on a table 3.16227 metres away. How convenient is that !
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