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squeevey t1_jdruvcd wrote on March 26, 2023 at 6:23 PM

Reply to comment by exmxn in Eli5: why do wired headphones that plug into your phone never need to be charged but wireless ones do? by exmxn

If you REALLY want to blow your hair back, start researching and learning about crystal radio receivers. You can pick up AM signals without power (if the tower is close enough).