User contributions for 57.66.175.6

28 November 2014

• 12:2212:22, 28 November 2014 diff hist +837 Telegrapher's equations →Solutions of the telegrapher's equations as circuit components current

14 August 2012

• 13:4313:43, 14 August 2012 diff hist +42,328 N Nonimaging optics →Compound parabolic concentrator