undulating light

undulating light

[′ən·jə‚lād·iŋ ′līt] (navigation) A continuously luminous light which alternately increases and decreases in brightness in cyclic sequence; the expression is applied primarily to aeronautical lights, the marine light equivalent being fixed and flashing light.

undulating light

A continuously luminous light that alternately increases and decreases in brightness in a cyclic sequence. The expression is applied primarily to aeronautical lights.