V1

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V1 or another notation stands for:

V1 (speed) , the speed of an aircraft taking off, up to which the take-off may be aborted
V1 , in the brain the primary visual cortex, see visual cortex # Primary visual cortex (V1)
V1 , "Vergeltungswaffe 1", cruise missile of the Second World War, see Fieseler Fi 103
V1 position , in grammar the verb first position

V ₁ , the first main branch of the fifth cranial nerve, see ophthalmic nerve
v ₁ , first cosmic speed, see escape speed (space travel) #First cosmic speed or orbit speed

See also:

VI (disambiguation)