Spectral Fix by Ruby Wallau October 16, 2019 Share Facebook LinkedIn Twitter As part of doctoral student Alfred Navato’s research project on the spectral fingerprints of wastewater, Meyling Yi, who is studying mechanical engineering and mathematics, adjusts the fittings on a spectrometer. Photo by Ruby Wallau/Northeastern University As part of doctoral student Alfred Navato’s research project on the spectral fingerprints of wastewater, Meyling Yi, who is studying mechanical engineering and mathematics, adjusts the fittings on a spectrometer. Photo by Ruby Wallau/Northeastern University