this post was submitted on 07 Aug 2025
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Today I Learned (TIL)

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TIL that in 1923, a man named Harry Grindell Matthews claimed he invented a “death ray” and demonstrated it to the British military - but the device never worked and he kept disappearing with the ... (en.wikipedia.org)
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The original was posted on /r/todayilearned by /u/OutrageousTerm7140 on 2025-08-07 02:54:53+00:00.

Original Title: TIL that in 1923, a man named Harry Grindell Matthews claimed he invented a “death ray” and demonstrated it to the British military - but the device never worked and he kept disappearing with the demonstration equipment.

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