{"knowledge_schema": {"broad_category": "Physics \u2192 Particle Physics \u2192 Mean Free Path", "refinement": "This problem examines the behavior of particles in a vacuum chamber under different conditions, specifically comparing the mean free path at standard conditions versus at near-light speeds.", "specific_scope": "The focus is on understanding how the mean free path of particles changes when they are accelerated to relativistic speeds, which affects their interactions and collision probabilities.", "goal": "Determine the relationship between the mean free path of particles at standard conditions and at near-light speeds."}, "summary": "This problem involves the concept of mean free path in particle physics, specifically how it changes under different conditions. When particles are accelerated to near-light speeds, their interactions with other particles or fields can change, typically resulting in a shorter mean free path due to increased energy and collision rates. Therefore, we conclude that the mean free path at near-light speeds (\u03bb3) is less than that at standard conditions (\u03bb1), leading to the answer \u03bb3 < \u03bb1."}