![]() If you can imagine an infinite blob of tangerine jelly, that is entirely the same in all directions, we can translate in any direction we like. It would be a terrible place to lose your keys. This would be translational invariant in any direction parallel to the ground. ![]() This are a little more difficult to apply to the real world than the simplified models that physicists like to imagine.įor translational invariance, imagine an infinite, flat plane, the same in all directions. This could be a spatial direction, so shifting everything to the left, or in time.
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