These types of waves are called longitudinal waves. In the diagram above the rope moves up and down but the energy is transferred along the rope from left to right, at 90° to the oscillation.

The wave travels from left to right, and the particles of the spring vibrate horizontally. In a longitudinal wave, the vibration is parallel to the direction of energy transfer. A ripple tank is a ...

TEGO revolutionizes gravitational wave detection with its tetrahedral spacecraft formation, improving sensitivity and ...