I don't know if anyone here in the internal martial arts forum has ever come across scientific research whose intention would be to prove or debunk ch'i. I found this, it's interesting reading and the findings seemed to indicate that ch'i is, in fact infrasonic energy which is measurable, qualifiable, and palpable. Read it, you might like it! http://www.scribd.com/doc/192882/Tai-Chi-QigongEnergy-Scientific-Experimentation
"Some scientific researchers" who are using period as a length measure. I wonder where they got their education? Edit: This is a gold mine, thanks for this