Ambient · cool light
Water Clock
Expanding ripples and shifting light on the surface behind a large digital clock. The coolest scene here, and a good counterpart to the fireplace on a warm night.
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Press F for full screen. Motion pauses automatically if your system asks for reduced motion.
Blue and calm
Why Water Reads as Restful
Blue Space
Research into what environmental psychologists call blue space fairly consistently finds water associated with lower reported stress than equivalent green or urban settings. Coastal living, in particular, tends to show up positively in wellbeing surveys.
Caustics
The shifting bright lines on a pool floor are caustics — light refracted through a moving surface and concentrated into a moving net of curves. They are one of the most recognisable optical patterns in nature, which is why a simple approximation still reads as water.
Cool Light in a Warm Room
Blue and cyan feel cooler than warm colours, which is a perceptual effect rather than a physical one but a reliable one. On a hot night a cool screen genuinely feels better than an orange one.
Not for Late Evening
The flip side is that blue light is the wavelength most likely to suppress melatonin. As a daytime or early evening background it is fine; close to bedtime, the fireplace or the night light on a warm setting is the better choice.
Under the hood
How This Scene Is Built
The ripples are expanding bordered circles on staggered delays, and the caustic effect comes from two crossed sets of repeating gradient lines drifting slowly against one another. Together they suggest a moving surface without simulating one.
It suits daytime working, warm rooms and screens in bright spaces, where a dark scene would look flat. For the evening, the fireplace or lava lamp sit at the warm end of the same idea.
Answers
Water Background Questions
What are the bright moving lines?
An approximation of caustics — the pattern light makes when it refracts through a moving water surface and concentrates into bright curves. It is the same effect you see on the bottom of a swimming pool.
Should I use this at night?
It is at the blue end of the spectrum, which is the light most likely to keep you alert. For late evening, the fireplace or the night light on a warm setting are kinder.
Is there any sound?
No, the page is silent. Run a wave or rain track alongside it if you want the audio.
Does it work on a phone?
Yes. The ripples scale to the viewport, so the effect looks the same on a small screen as on a monitor.
Can I stop the ripples?
Press pause motion and the surface holds still while the colours and light stay.