Because air and water are colorless and transparent, we cannot see most of the flows around us – but they’re always there. In a recent series, photographer Jess Bell has been capturing images of jumping dogs trailing a colorful powder wake. There’s no compositing in the photos. Bell puts powder on the dogs, then photographs them as they jump. The results show the billowing, turbulent wakes left by the dogs.

Why is water clear?

The human eye contains a great deal of water, so it would be difficult to see wavelengths that are absorbed by water. The light that gets to your retina has to pass through water, so the visible wavelengths of light are to a certain degree determined by what water is transparent to.

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