optical fabrication and testing spans an enormous range of manufacturing procedures and optical test configurations. the manufacture of a conventional spherical lens typically begins with the generation of the optic's rough shape by grinding a glass blank. this can be done, for example, with ring tools. next, the lens surface is polished to its final form. typically this is done by lapping—rotating and rubbing the rough lens surface against a tool with the desired surface shape, with a .
fpi is a nondestructive inspection process which means that the part is not in any way damaged by the test process. thus, it is of great importance that a dye and process are selected that ensure the part is not subjected to anything that may cause damage or staining.
wet processing engineering wpe is the most significant division in the textile preparation and processing. it is a major stream in textile engineering which is under the section of textile chemical processing engineering and applied science.
finkelstein's test is commonly confused with eichhoff's test: the eichhoff's test is typically described as the examiner grasping and ulnar deviating the hand when the person has their thumb held within their fist. if sharp pain occurs along the distal radius, quervain's tenosynovitis is suspected.
such a high-cost and short-lived grinding medium would be uneconomic in an industry processing hundreds of tonnes of ore an hour. subsequent test work focussed on finding a cheaper grinding medium that might make the bead mill viable for mineral processing. this work included using glass beads about us$4/kg and screened river sand about us$0 .