The quality or degree of being fork-like; the extent to which something resembles or has the characteristics of a fork.
From 'forky' (adjective) plus the noun-forming suffix '-ness' creating an abstract noun meaning 'the state or quality of being forky.'
The forkiness of a lightning bolt is actually key to how it dissipates electrical energy—more branches mean the lightning spreads the charge safely across more area!
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