I suppose this thread should belong to a seperate group called Light - that is, I suppose this should be where Quantum Physics should be. As for the question, I'd gladly explain that it is of a laser. I wanted to get a laser at Wicked Lasers (I know, with the LaserShades, of course), but here I'm stuck in a tight spot. Look, we have a red, green, and blue laser. The wattage we'll take to be around 500 mW for each laser. Now, if this is so, which one's beam is most powerful, by means of the heat generated on contact with a object? Red, green, or blue? I'd also like to know why this is so, and if a difference in the wavelength causes it to have more or less burning power on say, for instance a piece of paper.