Did you know? Early TV remotes worked with a spring-loaded hammer striking a solid aluminum rod in...
Shared by Massimo @Rainmaker1973 on X

Did you know? Early TV remotes worked with a spring-loaded hammer striking a solid aluminum rod in the device, which then rings out at an ultrasonic frequency, requiring no batteries. [📷 1970s-era model of the Zenith Space Command. Photo by Amelia Holowaty] https://t.co/dKtfulZRWe
Did you know? Early TV remotes worked with a spring-loaded hammer striking a solid aluminum rod in the device, which then rings out at an ultrasonic frequency, requiring no batteries. [📷 1970s-era model of the Zenith Space Command. Photo by Amelia Holowaty] https://t.co/dKtfulZRWe
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