How white is a paper?

Whiter paper are 1 example of important competitive advantages on an international market; but how white is a paper? Per Edström's research has resulted in a new generation of computational tools for simulation of light in paper and print

		IMAGE: This image is taken perpendicularly to the paper, which is illuminated in 45 degree angle. The light penetrates into the paper and meets the inks, some wavelengths are absorbed and... Click here for more information.

Whiter paper and better color reproduction are examples of important competitive advantages on an international market. But how white is a paper? And why do vacation photos turn out so dark if you don't buy expensive photo paper? Per Edström at Mid Sweden University has attracted international attention for his research, which has resulted in a new generation of computational tools for simulation of light in paper and print.