Bi-Co Mathematics Colloquium with Dr. Annalisa Crannell
Dr. Annalisa Crannell from Franklin and Marshall College will give a talk titled "The Moon Tilt Illusion and Perspective Geometry."
Abstract:
In this talk, we'll explore the wonders of how geometry and perspective art can help us look at the world in new ways (literally). We'll use this geometry to dig into a controversy about classical art (was Ivins correct that Dürer messed up perspective in his iconic etching of St. Jerome?). Then, we'll use our tools to analyze an illusion that most of us haven't even thought to contemplate.
The Moon Tilt illusion confuses the viewer about the direction of illumination of a waxing or waning moon. We give several examples of this phenomenon and explain how the illusion arises from standard (but surprising) aspects of perspective projections. Familiar perspective drawings and photographs of objects such as clocks and cubes help us further analyze the unfamiliar explanations of pictures of illuminated portions of spheres.
Bryn Mawr College welcomes the full participation of all individuals in all aspects of campus life. Should you wish to request a disability-related accommodation for this event, please contact the event sponsor/coordinator. Requests should be made as early as possible.