By doing so, weld current and force is focused into the small area of the projection, and heat is obtained from the resistance to the flow of the welding current. Due to this heat, the projections collapse and the parts are weld together. Another successful welding technique is capacitor discharge stud welding, which uses weld studs or specially formed bolts for welding instead of projections.
Definition of inert. 1  1 : lacking the power to move. 2  2 : very slow to move or act : sluggish. 3  3 : deficient in active properties; especially : lacking a usual or anticipated chemical or biological action.
Six months earlier, in October 1999, Jerri had made headlines for being the object of a daring airlift rescue at the South Pole. Inertial mass is the amount of matter in an object, the measure of the resistance an object has when a force pushes it. The Equivalence Principle and Testing Einstein With Spaceships and Atoms Matthew R. Francis June 3, 2014. âAn object lesson in responsibility and kindness,â thinks her father.