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  • 5
    And if you ask yourself why the shield isn't just completely impenetrable: The in-universe explanation here is that you still need certain things to pass through, like the air to breathe by the wearer. The only distinguishing factor by which a shield can decide which things to deflect and which to let pass is their speed. Commented Oct 21, 2021 at 13:26
  • 8
    This is one of those things that you shouldn't think about too much. A six-to-nine cm/sec limit still excludes a lot of things that are allowed in the narrative. Just think "it keeps out bullets, and destroys both the shooter and itself when lasers are used," and leave it at that. Commented Oct 21, 2021 at 13:37
  • 3
    In the book there are several references to "slow pellet stunners" which are presumably gun-like devices that fire a projectile from range, slow enough to pass through a shield but with not enough energy to substantially damage the target, hence the need to stun instead. Commented Oct 21, 2021 at 13:46
  • 13
    @GrimmTheOpiner Clearly light is acting like a wave when it crosses the shield and not a particle ; ) Commented Oct 21, 2021 at 16:23
  • 4
    @Bohemian Theoretically, I think so. The way I've always imagined it, the shield provides a buffer of a few centemetres (the distance of which can be adjusted by the wearer). So long as you could fit the entire gun in that space, then yes, in theory. If you cannot however, the barrel would be up against the wearer, but the bullet would still have to travel down the barrel, which may be partially in and partially out of the shield - which would cause the bullet to ricochet off the shield inside the barrel, leading to all sorts of fun! Commented Oct 26, 2021 at 6:05