水分子白板动画

Hand-drawn model of a single water molecule in the middle of the paper: one large red ball (the oxygen atom) with two smaller white balls (the hydrogen atoms) attached to it by short sticks. Both small white balls sit on the lower side of the red ball, one down-left and one down-right, forming a wide V shape like an upside-down letter V, with the angle between them a little wider than a right angle. Exactly one red ball and exactly two white balls. Nothing else in the picture, plenty of empty space all around. Coloured pencil and watercolour marker, clean black ink outlines, warm off-white paper, no text.