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Build a Crystal Radio
electronics
A working radio with no batteries — runs on the energy of the radio waves themselves. The first DIY electronics project a generation of American kids built.
source
Popular Science, March 1922 (and many others) · Popular Science, March 1922 (and many others)
card id
card_n_072d00893a26
adjoining cards
- shelf anchor → Tie the Six Essential Knots
- on the shelf of → The maker's bench — plans and builds — a member of the maker shelf in the keeping
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