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.
The definition of inert is slow or having no action or power to move. An example of inert is a slug that is standing still. having inertia; without power to move, act, or resist. tending to be physically or mentally inactive; dull; slow.
Meaning: (physics) the tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force. Classified under: Nouns denoting natural phenomena. Hypernyms (inertia is a kind of...): mechanical phenomenon (a physical phenomenon associated with the equilibrium or motion of objects).