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...James Morton (1845–1920) in: ''The X-ray; Or, Photography of the Invisible and Its Value in Surgery'' (English; German: ''Röntgenstrahlen'', or: ''Die Pho ...th centuries with the realization that [[ionizing radiation]] from natural and artificial sources can have harmful effects on living organisms. As a resul ...

...tributed loads (u.d.l.) and uniformly varying loads (u.v.l.) over the span and a number of concentrated loads are conveniently handled using this techniqu .... They can also include [[computers]] and sensors that monitor performance and plan movement, often called [[mechanical system]]s.}} ...