https://www.photonics.com/Articles/Smartphone_Spectroscopy_Takes_the_Lab_to_the/a63917
https://www.photonics.com/Articles/Smartphone_Spectroscopy_Takes_the_Lab_to_the/a63917
Map: Average rainfall 2001-2016, global tropics
https://www.photonics.com/Articles/Smartphone_Spectroscopy_Takes_the_Lab_to_the/a63917
https://www.photonics.com/Articles/Smartphone_Spectroscopy_Takes_the_Lab_to_the/a63917