Time is Money: Golden Age of TimekeepingThe terms AM and PM appeared first in Northern Europe, at the beginning of what would become a full-fledged industrial revolution. Farmers, long tuned to the natural timekeeping of the sun, abandoned their fields to find work in urban areas.
breaking stress. The stress required to fracture a material whether by compression, tension, or shear. breaking stress. The stress at which a component ruptures under a tensile force.
While bad cases of some injuries do have a reputation for sticking around longer than the duration of a normal stress fracture, a stress fracture is a much bigger baseline setback than most soft tissue injuries: at least six weeks of no running at allâsome of your time off may even need to be on crutches or in a âboot.â.