As to speed of light throught water while in college One assigment was to report on an artical from a major science research publication. While looking through one I noticed the corrections page. They stated that one reserch had concluded that light is slowed down while traviling through water. The publication corrected the theory pointed out by James Bennington of Jasonville Ind that light was not slowed through water . Light simply had to travel farther as it was reflected from molecule to molecule often reversing itself, thus appeared to travel faruther. Upon the experts research the conclusion was that Mr. Bennington was indeed correct. This did amaze me as James Bennington was my uncle, dad's sisters husband. Bennington died with many patents to his credit and was the fellow who perfected using amonium nitrate for explosives. I well recall his expermints in our woods, once blowing a stump clear over the barn roof. I know this perputel motion thing is nuts as expermints conclude and bearing friction alone would make it impossible in only self purpulation let alone getting usefull work from it. some studys show at absloute -450F and floating bearing surface MIGHT work only to self run not pull anything. However often great things often come from regular guys just expermenting Bill Wilson Near Jasonville - Linton Ind.