As to the effect of the wave on the air, we will suppose the water to be quite flat and the air motionless, a heavy undulation comes on the scene, it has to pass, so it pushes the air up with its face, letting it fall again as its back glides onwards.
Quotes about undulation (3 Quotes)
Over the glittering, rattled ladders of shale the birds cross, tangential to the sea at night. Hour upon hour you can sense the undulation of wings. If you lift your cheek quite carefully you can feel the kiss and the wisp of air stirred by the inaudible glide.
Wind is a floating wave of air, whose undulation continually varies.