During the many battles in the Star Wars universe droids, armies, and ships have shields up which are impenetrable to fire from aggressors, but are able to fire from the inside toward their aggressors.
How does this work in the Star Wars universe?
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Sign up to join this communityDuring the many battles in the Star Wars universe droids, armies, and ships have shields up which are impenetrable to fire from aggressors, but are able to fire from the inside toward their aggressors.
How does this work in the Star Wars universe?
This video contains a fairly intelligent interpretation of this exact question:
Basically,
In the Star Trek universe, force fields work by way of pattern resonance, so energy weapons of a particular frequency are allowed through.
In the Star Wars universe, the usage is more ambiguous. The best guess (as conjectured in the video above) is that the droid brain of the droid/ship that's firing the weapons temporarily takes down a shield (or portion thereof?) while an outgoing round is passing through. This happens so quickly that there's little chance of an incoming round passing through at the same time.
As far as I can make out, there's no real canon explanation for how the "shooting from the inside out" works in the Star Wars universe.
There are 2 different types of shields in Star Wars: Ray Shields and Particle Shields. The former deflects bolts of plasma, the latter deflects solids (and maybe liquids and gasses). My guess is that the shields protecting gun bays are particle shields.