Dada fan

The Dada exhibit currently at the National Gallery. The last room has a large screen that shows a rotating wheel painted in back and white. The effect is mesmerizing, spirals going away from us and small circles disappearing.
A man is walking by with an infant in his arms. She must be 9 or 10 month old. A baby with a cut dress and rosy cheeks.
Her eyes are drawn to the screen. She stops moving and watches. After 10 seconds, the father moves to the next display. The baby twists her head completely, and turns to keep watching the wheels and the geometrical patterns that are shown on the screen. Her dad does not notice and I can see them both, him looking straight ahead at a picture and the baby in his arms, her head twisted and tilted to watch some more of that fantastic spectacle.