http://gigaom.com/2014/04/29/consumer-physics-150-smartphone-spectrometer-can-tell-the-number-of-calories-in-your-food/
Oscar Alcala
flipped into My Stuff
http://gigaom.com/2014/04/29/consumer-physics-150-smartphone-spectrometer-can-tell-the-number-of-calories-in-your-food/