Title: Why do cement, carpet and sand look darker when they are wet? Author: Lim, Sieu Pin Subject: Light--Juvenile literature--Bibliography Library resources--Singapore Science and technology>>Physics>>Light Language: English Publisher: National Library Board Singapore, 2008-03-31 File Details: application/pdf Abstract: This resource guide provides the answer to the question "Why do cement, carpet and sand look darker when they are wet", with accompanying book and website recommendations relating to the topic. All Rights Reserved. National Library Board Singapore 2009.