earth system


earth system

[′ərth ‚ sis·təm] (geophysics) The atmosphere, oceans, biosphere, cryosphere, and geosphere, together.

earth system

The bonding system in which all metallic parts of an aircraft are interconnected to form a low-resistance network for safe distribution of electric current and charges. All metallic parts in this process have the same electrical potential to ensure that there is no sparking. Also called bonding.