Take a deep breath. What you just breathed in was probably about 78% nitrogen and 21% oxygen and some minor other components. But how do you measure that? Measuring gases and their concentrations has been pretty difficult, says Bosch physicist Alex Stratmann. His team’s invention, the optical gas spectrometer, OGS, is set to change that. It packs what used to be a complex lab setup into a tabletop device. OGS leverages Raman spectroscopy, a method that exists for about a 100 years and has been used e.g. in the art world to analyze pigments. Our hosts Melena and Shuko learn from Cristina Aibéo, a chemist at Berlin’s National Museums, how Raman spectroscopy can help solve crimes and also save energy. At Bosch, on the other hand, the OGS helps with measuring hydrogen - and thus with the transition to a green hydrogen economy. Breathe in, breathe out, hit play!

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