of all types of lenses. whilst zoom lenses can never out-perform fixed focal lengths, the differences are no longer significant in most applications. coherent fiber optics, fibroscopes and rod-lens endoscopes[ edit ] fibre optics[ edit ] the ancient romans knew how to heat and draw-out glass into fibres...
on r&d, production, sales and technology centre. on-line enquiry of specific topics by weave, yarn-dyed design, print and others, with images displayed instantaneously on screen. published on: / / disclaimer: all views and opinions expressed in this column are solely of the interviewee, and they do not...
elsewhere specified or included chapter- products of animal origin, not elsewhere specified or included section- chapter ( to ) section ii - vegetable products chapter chapter description chapter- live trees and other plants; bulb, roots and the like; cut flowers and ornamental foliage chapter- vegetable...
elsewhere specified or included chapter- products of animal origin, not elsewhere specified or included section- chapter ( to ) section ii - vegetable products chapter chapter description chapter- live trees and other plants; bulb, roots and the like; cut flowers and ornamental foliage chapter- vegetable...
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e-mail us at citations y. yu et al. entanglement of two quantum memories via fibres over dozens of kilometres . nature. published online february , . doi: /s - . about emily conover e-mail twitter physics writer emily conover has a ph.d. in physics from the university of chicago. she is a two-time winner...
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protection of workers potentially at risk from explosive atmospheres requires the employer to take technical and/or organisational measures to prevent the formation of explosive atmospheres, prevent the ignition of explosive atmospheres, and reduce the effects of an explosion in such a way that workers are not...