Science
Related: About this forumFilms of these atomic explosions just got declassified
From 1945 until such tests were banned in 1963, the US conducted 210 atmospheric nuclear tests. The explosions were filmed with multiple cameras capturing each event at around 2,400 frames per second.
Those films had been left to quite literally rotscattered around the country in vaults and safesuntil physicist Greg Spriggs at the Lawrence Livermore National Laboratory began tracking them down five years ago. He estimates about 10,000 explosion films were made and so far his team has located around 6,500 and scanned about two-thirds of them into a digital archive.
Since the US hasnt exploded a nuclear weapon in the atmosphere since 1962, scientists use data from these past explosions to help certify that the aging U.S. nuclear deterrent remains safe, secure and effective. Reanalyzing the films with modern techniques, Spriggs discovered that much of the data embedded in computer codes on things like explosion size and shock wave were wrongby as much as a 30% margin. Thats a big number for doing code validation, Spriggs said. When you go to validate your computer codes, you want to use the best data possible.
Hes working his way through the films to update the data. Spriggs doesnt want nuclear weapons to be used. Ensuring that nuclear weapons are safe and effectiveand making that knownprovides an effective nuclear deterrent and keeps the US safe, he argues.
video at link
https://qz.com/937213/scientists-from-llnl-laboratory-have-declassified-these-nuclear-test-explosion-films/
Historic NY
(37,449 posts)Thor_MN
(11,843 posts)Just sayin'
shadowmayor
(1,325 posts)Followed by typical neglect. They don't even know where the nuclear waste is buried at our research sites. Kinda forgot where those barrels ended up. You know, down in that arroyo somewhere. And what were the effects of these blasts? Nobody knows, and nobody was allowed to investigate for years.