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Actually, open is good. When the shield (really a reflector) is closed, the core goes critical. Basically, the shield is made of mirrors that reflect neutrons back into the core, knocking more neutrons loose which then get reflected back in, at the point of criticality creating a feedback loop that will run away- a huge explosion. The closer the sphere is to fully closed, the more energy generated and the more radiation emitted.

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outhouseperilous@lemmy.dbzer0.com ⁨2⁩ ⁨days⁩ ago
Oh, i remember the story about the guy doing a party trick sith a screwdriver and killing the whole room. Thing in pic looked similar.

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- Cowabunghole@lemmy.ml ⁨2⁩ ⁨days⁩ ago
  Yeah that’s the point. The screwdriver kept it open (the “safe” configuration) and when the screwdriver was removed it closed (killing everyone)
  
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  - outhouseperilous@lemmy.dbzer0.com ⁨2⁩ ⁨days⁩ ago
    Oh! Got it. So its the putting it back on in the pics that causes the everybody being dead?
    
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    Hjalamanger@feddit.nu ⁨2⁩ ⁨days⁩ ago
    Yws, and that would be the goal of the little boy that’s playing the game
    
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