Digital Alarm Clock History

The year that the Joseph Henry, the first secretary of the Smithsonian Institution, invented what’s widely considered the first electric doorbell, which used a tightly coiled electromagnet to create a ringing noise by forcing a magnet to swing at a bell using the electric current. A mechanical buzzer works in a similar fashion, except there’s no bell to hit and the buzz is caused by the movement of the magnet itself. This ScienceOnline video does a good job explaining how buzzers, which later found use in alarm clocks, did their things in the pre-digital era… More at Medium.

The topic sounds rather dull, but it’s quite an interesting article. Honest.

Categories: Articles

1 reply

  1. Amazing how evocative some of those beep patterns are! So emotionally loaded with the sluggish resentment of years of having to get up in the morning…

    This Raggedy Ann + Andy alarm clock was part of my family lore growing up:

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