A UV light is needed to start a chemical reaction on the chemical coating of the Starlight UV Sun Paper. This turns the yellow coating blue. Photography is the practice of creating images with light, ...

Photosynthesis is one of the most important reactions on this planet. Let's have a look at the word "Photo" means light, “Synthesis” means to make - and that's exactly what it does.

This stage is so-called because it depends on light being available. The reactions of this stage also require specific enzymes to catalyse them. Light energy absorbed by chlorophyll is converted ...