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Image (c) Dr. Ray Clark & Mervyn Goff, Science Source/Photo Researchers
Look at the bed below the body of the sleeping man. You can still see
where he was lying down. The heat from his body warmed up the bed sheets
which are now radiating infrared light toward your eyes. You can tell where
he was lying down even after he moved off the bed!
Shop Windows to the Universe Science Store!
Our online store
includes fun classroom activities
for you and your students. Issues of NESTA's quarterly journal, The Earth Scientist
are also full of classroom activities on different topics in Earth and space science!