Events
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David Hogg, Professor of Physics & Data Science, NYU Sailing as Momentum Transport Sailboats represent an ancient (but newly relevant) sustainable form of transportation. They work off the relative velocity between the air and the water. Sailboats can sail upwind (by tacking), they can sail downwind faster than the wind (also by tacking), and they can sail crosswind much faster than the wind. I present the simplest possible momentum transport model of a sailboat, and explain all of these capabilities. In this (spherical scow) model, the sailboat is defined by three dimensionless numbers: the sail-to-keel area ratio, a lift ratio for the sail, and a lift ratio for the keel. The model makes a number of amusing "predictions" that explain the properties of commercial and competitive sailboats. There are many connections to sustainable energy. |
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UWM Physics Post docs, graduate student, and faculty Spring 2025 APS Preview Talks Members of the UWM Physics department will present their preview talks in preparation for the upcoming APS meetings The event flyer is available here. |
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Shashwat Sardesai, PhD Candidate, UWM Physics Cosmic Orchestra: The Gravitational Wave Background In the last year and a half, the North American Nanohertz Observatory for Gravitational Waves, and their collaborators, have detected the presence of a gravitational wave background using pulsar timing arrays. These gravitational waves likely arise from supermassive black hole binaries (SMBHBs) and have periods spanning years or decades. In this talk, I will go over the basics of PTAs, the different methods to analyze the background, as well as the projects I have worked on as a member of the NANOGrav collaboration to try and resolve aspects of the GWB. The event flyer is available here. |
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