Access

News and Views

Nature Photonics 2, 71–72 (1 February 2008) | doi:10.1038/nphoton.2007.289

Medical imaging: Retracing random paths

Eric Lantz

If you completely enclose a small white-light torch with your hand, your fingers will appear red. This is because the red and infrared light from the torch is not significantly absorbed while propagating through your tissue but instead strongly scattered.