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X‐ray diffraction imaging was used to monitor the local strains that developed around individual n–p–n bipolar transistors within fully encapsulated packages under conditions of extremely high forward bias to simulate accelerated ageing. Die warpage associated with the packaging was observed to relax systematically as the polymer became viscous due to the temperature rise associated with the dissipation...
We describe an entry in a twelfth century monastic chronicle, compiled and composed by Gervase of Canterbury (c. 1145–c. 1210), which gives a credible description of ball lightning. It predates the earliest known report of the phenomenon from England by nearly 450 years. The meteorological descriptions in Gervase's 1195 report are examined in the context of the purpose of the chronicle and we compare...
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