Danger diffuse reflectance

Along this line, the limitations of the technique used must be recognized. Some measure predominantly bulk properties, e.g., X-ray diffraction and magnetic susceptibility whereas, others are sensitive to surface composition, e.g., adsorption and ESCA. For example, in one reported study only cobalt in tetrahedral coordination was found on a catalyst by diffuse reflection spectroscopy, but magnetic measurements revealed that octahedral cobalt must also be present (10). Thus, it is dangerous to rely on any one method to characterize these catalysts. 

Diffuse reflective sensors have little trouble detecting parts with a more complex geometry, even if the parts are shiny. Complex parts scatter light in many directions and the. sen.sor can pick up extremely small amounts of this light. Even if the sensor misses an occasional part, the dies are in no danger the control will stop the press. 

Direct viewing and diffuse reflection dangerous. A fire hazard. 

High-powered lasers or laser systems which can be hazardous to the eye from intrabeam viewing, specular reflections, or diffuse reflections. They may also be hazardous to the skin or flammable materials, causing a fire. These lasers carry a DANGER label. Strict controls are required, including use of protective eyewear and door interlocks. 

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