To prove just how pure its water is, bottled water company Spa Nederland launched an experiment to design a camera lens using just a drop of water, electricity, an aperture ring, and a glass plate.

Get ready to bend light, magnify letters and have fun with water drops—all while getting a glimpse into how lenses work! Lenses are the key components in eyeglasses, contact lenses, binoculars ...

affordable way to make dynamically adjustable water-based lenses that have a wide variety of potential future applications—from classrooms and research labs to cameras and even wearable gadgets.