Nathan B. Speirs joined the faculty of the BYU Mechanical Engineering Department in 2023. His research incorporates high-speed photography with various visualization techniques and theoretical modeling to study interfacial fluid dynamics. Areas of particular interest include how objects enter a body of water, the dynamics of vaporous cavitation bubbles, and the microphysical interactions of rain droplets, cloud droplets, and airborne particulate matter. Before coming to BYU, Dr. Speirs worked at the Naval Undersea Warfare Center in Newport, RI and as a post-doctoral fellow at King Abdullah University of Science and Technology in Saudi Arabia. He received a PhD in Mechanical Engineering from Utah State University in 2018 and a B.S. in Mechanical Engineering from BYU in 2015.