fluorescence

Leonardo used both fingers to paint the Mona Lisa
The secret to Leonardo da Vinci's Mona Lisa's optical effect for Mona Lisa painting was first deciphered by French researchers.
Two poisons in vermicelli, noodles you are eating every day
Fluorescence and borax found to be used in the technology of making noodles are two very dangerous banned chemicals. People who eat this type of vermicelli are at risk of cancer.