Youtube activity of "" (@jb76489) on "Technology Connections" channel.
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UCo8sm59Lw0N99WDEsoAyCJA
Commenter youtube id
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Commenter name
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@jb76489
Commenter name id
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"Door closers: ubiquitous, yet unloved and often maladjusted"
Comments by video
"Duracell PowerCheck: A genius idea which didn't last that long"
"How the gas mantle made lamps 10X brighter"
"MP3 CDs: a hybrid "format" that never existed, yet was surprisingly common"
"The Numitron: An obvious idea that wasn't very bright"
"The clever feature that makes cheap heaters safe — and why they're actually dangerous"