Skip to main content

Thrifty Thursday: The Liquid Lens

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American


Thrifty Thursdays feature photographs taken with equipment costing less than $500.

A vial filled with oil (top) and water demonstrates optical properties of each. The oil bends light more strongly than water, resulting in a more compressed image.


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


[Apple iPhone 4s - $300]

Light bends as it passes through liquids, and the amount it bends depends on the molecular properties of the medium. I wanted to demonstrate this effect in a single image by contrasting the refractive qualities of oil and water at the same time using a vial half-filled with each.

I set up a mini-studio as below, capturing the image above on an iPhone 4S.

 

Alex Wild is Curator of Entomology at the University of Texas at Austin, where he studies the evolutionary history of ants. In 2003 he founded a photography business as an aesthetic complement to his scientific work, and his natural history photographs appear in numerous museums, books and media outlets.

More by Alex Wild