 Laboratory-scale measurements of the effects of [any lightning investigation research] do not scale to applications involving natural lightning.Field applications have mainly been derived from trial and error based on the best intended laboratory research of a highly complex and variable phenomenon.The parts of a lightning protection system are air terminals (lightning rods or strike termination devices), bonding conductors, ground terminals (ground or "earthing" rods, plates, or mesh), and all of the connectors and supports to complete the system.