Discover how iron's opacity in the sun challenges scientific models, and how researchers are working to resolve the ...

Opaque close opaqueA material ... Ray diagrams are used to show the path that light takes. The rays of light are represented using straight lines, with an arrowhead to show the direction the ...

had discovered that a number of substances which are opaque to visible rays of light are transparent to waves capable of affecting a photographic plate. A note upon these reports appeared in ...

which traversed metals and bodies opaque to light as well as glass and other transparent substances. This radiation impressed a photographic plate and discharged from a distance electrified bodies ...