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Department Events

Events

• Mar

  9

  John Gemmer, Ph.D., Wake Forest University

  McCormick-Engineering Sciences and Applied Mathematics

  4:00 PM M416, Technological Institute

  EVENT DETAILS

  Title: Why is Lettuce So Wrinkly?

  Speaker: John Gemmer, Ph.D., Wake Forest University

  Abstract: Many patterns in Nature and industry arise from the system minimizing an appropriate energy. Torn plastic sheets and growing leaves provide striking examples of pattern forming systems which can transition from single wavelength geometries (leaves) to complex fractal like shapes (lettuce). These fractal like patterns seem to have many length scales -the same amount of extra detail can be seen when looking closer (“statistical self-similarity”). It is a mystery how such complex patterns could arise from energy minimization alone. In this talk I will address this puzzle by showing that such patterns naturally arise from the sheet adopting a hyperbolic non-Euclidean geometry. However, there are many different hyperbolic geometries that the growing leaf could select. I will show using techniques from analysis, differential geometry and numerical optimization that the fractal like patterns are indeed the natural minimizers for the system.

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  TIME Monday, March 9, 2020 at 4:00 PM - 5:00 PM

  LOCATION M416, Technological Institute    map it

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  CONTACT Meelee Ahn Park    meelee.park@northwestern.edu EMAIL

  CALENDAR McCormick-Engineering Sciences and Applied Mathematics

• Sep

  8

  Welcome & Breakfast for New McCormick PhD Students

  McCormick School of Engineering and Applied Science

  9:00 AM LR2 & Tech East Plaza, Technological Institute

  EVENT DETAILS

  Enjoy a welcome from Dean Christopher A. Schuh and other McCormick leaders, and receive a Northwestern Engineering T-shirt. A free light breakfast on the Tech East Plaza will follow.

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  TIME Monday, September 8, 2025 at 9:00 AM - 10:00 AM

  LOCATION LR2 & Tech East Plaza, Technological Institute    map it

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  CONTACT Andi Joppie    andi.joppie@northwestern.edu EMAIL

  CALENDAR McCormick School of Engineering and Applied Science

• Sep

  12

  New Undergraduate Fall 2025 Registration

  University Academic Calendar

  All Day

  EVENT DETAILS

  New Undergraduate Fall 2025 Registration

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  TIME Friday, September 12, 2025

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  CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

  CALENDAR University Academic Calendar

• Sep

  15

  Welcome & Luncheon for New Full-time Graduate Students

  McCormick School of Engineering and Applied Science

  11:00 AM Ryan Auditorium & Tech East Plaza, Technological Institute

  EVENT DETAILS

  Enjoy a welcome from Dean Christopher A. Schuh and other McCormick leaders, and receive a Northwestern Engineering T-shirt. A free lunch on the Tech East Plaza will follow.

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  TIME Monday, September 15, 2025 at 11:00 AM - 12:30 PM

  LOCATION Ryan Auditorium & Tech East Plaza, Technological Institute    map it

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  CONTACT Andi Joppie    andi.joppie@northwestern.edu EMAIL

  CALENDAR McCormick School of Engineering and Applied Science

• Sep

  16

  Fall Classes Begin. Change of Registration (Drop/Add) Late registration for returning students begins

  University Academic Calendar

  All Day

  EVENT DETAILS

  Fall Classes Begin. Change of Registration (Drop/Add) Late registration for returning students begins

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  TIME Tuesday, September 16, 2025

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  CONTACT Office of the Registrar    nu-registrar@northwestern.edu EMAIL

  CALENDAR University Academic Calendar