Women in Astronomy and Physics Lecture Series (WAPHLS): Cacey Bester, Swarthmore College

Impact into granular media: a collisional process

Abstract: Examples of granular materials exist in abundance, from rice and cereal to sand and rocks. These particulate systems seem simple; they consist of dry, rigid grains interacting by contact forces. However, granular materials present complexities that are not well-understood, such as disordered force networks that transmit forces among grains and flow behavior that can readily change between solid-like rigidity and fluid-like flow. Impact of a granular target by a solid projectile illustrates both of these aspects. In this talk I will discuss impact experiments in which we use high-speed video photography to probe the unique features of a granular medium.

Zoom and Viewing Party: The speaker will be on Zoom, but WIPA will have a viewing party in Tate 301-20 with coffee, tea, hot chocolate, and stroopwafels. Zoom here: https://sites.google.com/umn.edu/wipaumn/waphls

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Start date
Tuesday, Nov. 16, 2021, 5:30 p.m.
End date
Tuesday, Nov. 16, 2021, 6:30 p.m.
Location

Remote talk with viewing party (details below)