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I first heard of a device like this as a kid reading https://en.wikipedia.org/wiki/Danny_Dunn,_Invisible_Boy https://en.wikipedia.org/wiki/Danny_Dunn,_Invisible

I first heard of a device like this as a kid reading https://en.wikipedia.org/wiki/Danny_Dunn,_Invisible_Boy https://en.wikipedia.org/wiki/Danny_Dunn,_Invisible_Boy

deleted 9y ago
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