The phenomenon, now known as the Purkinje effect, explains why colors look different depending on how much light is present. Usually, the Purkinje effect unfolds slowly as day gives way to night. “What we’re seeing with the Purkinje effect isn’t actually happening. To see the Purkinje effect, people will have to take off their eclipse glasses, but they should do so only when looking at their surroundings, Rylander said. … The Purkinje effect is visible if you look at objects around you during occlusion, not at the sun,” Rylander said in an email.

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Persons: Jan Evangelista Purkyně, Will Snyder, James S, Snyder, It’s, ” Snyder, Grady Rylander III, Rylander, ” Rylander Organizations: CNN, Saint Louis Science, McDonnell, University of Texas, Saint Louis Science Center, Planetary Society Locations: Missouri, Mexico, United States, Canada, Austin