A study of light and refraction, this painting depicts a bather partially submerged in water, rendered with rhythmic, Divisionist brushstrokes.

Frantisek Kupka, a Czech painter who spent much of his career in Paris, produced this work during a period of transition in his artistic practice. Before his move toward complete abstraction, Kupka explored the intersection of light, colour, and the human form. In this composition, the figure of the bather is partially submerged, allowing the artist to experiment with the refraction of light through water. The surface of the pool is rendered with rhythmic, horizontal brushstrokes that suggest movement and fluidity, contrasting with the solid, pale form of the bather. The palette is dominated by deep blues, greens, and ochre tones, which create a sense of atmospheric depth. Kupka employs a Divisionist approach to the application of paint, placing small, distinct marks of colour side by side to build the image. This technique allows the viewer to perceive the water as a shifting, semi-transparent medium rather than a static surface. The rocky bank in the foreground and the distant shore are treated with similar attention to light, grounding the ethereal figure within a tangible, natural environment. This painting reflects the artist's interest in the scientific and philosophical inquiries of the early twentieth century, particularly regarding optics and the nature of perception. By focusing on the way water distorts the body, Kupka moves away from traditional realism. Instead, he presents a scene where the subject and the environment merge, anticipating his later experiments with pure colour and non-representational form. The work remains a clear example of his ability to balance figurative elements with a modern, analytical approach to painting, capturing a fleeting moment of stillness in a dynamic, liquid setting.