Wood's rays

Wood's rays

(wŭdz)
[Robert Williams Wood, U.S. physicist, 1868–1955]
Ultraviolet rays; used to detect fluorescent materials in the skin and hair in certain disease states such as tinea capitis. The terms Wood's light and Wood's lamp have become synonymous with Wood's rays, even though these are misnomers.
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These samples were orientated perpendicularly to the axis of the tree (transverse section), perpendicularly to the wood's rays (tangential section) and parallel to the rays (radial section); they were examined under episcopic microscope (100 X to 400 X) and scanning electron microscope (1000 X to 4000 X).