Vasco da Gama Bridge, Portugal - 56,381 feet: Lisbon's Vasco da Gama Bridge is the longest in Europe, spanning a total distance of 10.7 miles. Taking three years to complete, the bridge opened for traffic in 1998 to celebrate the 500th anniversary of Vasco da Gama's discovery of the maritime route from Europe to India.
A type of wave that can travel through empty space as well as through matter is electromagnetic wave.
Light wave-A light wave is a special type of electromagnetic wave that has a frequency in the visible spectrum. Longitudinal-A longitudinal wave is a wave where the disturbance travels in the same direction as the wave. Sound waves are longitudinal. Mechanical Waves-A mechanical wave is a wave that must travel through some sort of matter called a medium. Mechanical waves cannot travel through a vacuum like outer space. Medium-The medium is the matter that a wave travels through.