Researcher develop technology that could turn smart phones into spectrometers Scientsts have come up with an IR LED that is ‘tuneable' to different wavelengths of light. The device can identify a suite of gases, potentially including lethal ones, improving the safety of firefighters, miners, the military, and your local plumber. The technology has been developed by the University of Melbourne, the Lawrence Berkeley National Laboratory, the University of California, Berkeley, and the Australian Research Council Centre of Excellence for Transformative M...