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The concepts of resistance and conductivity are essential in the field of electricity and have a significant relationship. Resistance is the measure of a material's opposition to the flow of electric current in an electric field, denoted by the Greek letter ρ (rho) and measured in ohm-meters (Ω·m).

Panasonic said it will stop producing solar cells and modules at Tesla’s factory in Buffalo, N.Y., ending a four-year joint venture with the electric automaker.

Outboard engine refers to the propulsion engine installed on the outside of the hull (ship), usually suspended on the outside of the stern, also known as the outboard engine. According to different energy sources,