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Operation Plumbbob: the fastest object ever (Pascal B)
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YouTubeWintz Studios
In 1957, during Operation Plumbbob, scientists detonated an underground nuclear test called Pascal-B. To seal the shaft, they used a 2,000-pound steel manhole cover. When the bomb went off, the pressure had nowhere to go. A high-speed camera caught the cover for one single frame—moving so fast it may have become the first human-made object to leave Earth. This was just 1 of 29 nuclear tests conducted in 1957 alone. ⸻ #OperationPlumbbob #HiddenHistory #ColdWar #ScienceFacts #DidYouKnow
0:32
In 1957, during Operation Plumbbob, scientists detonated an underground nuclear test called Pascal-B. To seal the shaft, they used a 2,000-pound steel manhole cover. When the bomb went off, the pressure had nowhere to go. A high-speed camera caught the cover for one single frame—moving so fast it may have become the first human-made object to leave Earth. This was just 1 of 29 nuclear tests conducted in 1957 alone. ⸻ #OperationPlumbbob #HiddenHistory #ColdWar #ScienceFacts #DidYouKnow
12.7K views3 months ago
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The Galactic Void • The Void Network on Instagram: "Operation Plumbbob’s “Manhole Test” (officially known as Pascal-B) was a U.S. nuclear test conducted in 1957 at the Nevada Test Site. It involved detonating a small nuclear device in a deep underground shaft capped with a steel manhole cover. The goal was to study high-energy explosive effects and containment methods."
19.9K viewsMar 3, 2025
Instagramthegalacticvoid
The Factonaut on Instagram: "Operation Plumbbob's "Manhole Test" (officially known as Pascal-B) was a U.S. nuclear test conducted in 1957 at the Nevada Test Site. It involved detonating a small nuclear device in a deep underground shaft capped with a steel manhole cover. The goal was to study high-energy explosive effects and containment methods. The test unintentionally launched the steel cap at an extraordinary speed, possibly exceeding Earth's escape velocity (~11.2 km/s), making it one of th
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