physical static is a mean of physical overproduction
refraction is physical_phenomenon. refraction is not physical_phenomenon. imperceptibility is physical_property. stress_vector is tangible_physical_quantity. invisibility is physical_property. impairing is physical_event. physical_measure is physical_attribute_describing_predicate. detecting_physical is physical_event. level_of_compressibility is tangible_physical_quantity. deflecting is physical_event.