Pebble in water by Loralee jade in Hobart

When the pebble is dropped in the pond it pushes water out of the way The water has nowhere to go but to the side and up creating a circular peak around the drop point This peak falls again under the forces of gravity and surface tension pushing the water beneath it out of the way On the inside of the circle this newly pushed water fills the hole left by the pebble passing through But on the outside it creates a new circular peak just a little further out So a ripple spreads out from the drop point even though the individual water molecules are mostly just moving up and down in place Oil on canvas 15 x 20 cm