Using an extended infrared camera they have been able to reveal the meridian structure after burning moxibustion sticks as a directed heat source, in a defined manner, in proximity to body regions where there is purported to be the acupuncture points.
In the images that they obtain distinct temperature gradients of 5°C/cm2 can be fixed and established within these wave guides, while the heat source is dozens of centimeters apart, only over the acupuncture point.
In a paper by same authors and others, also listed in this website , they opine that those channels have a high optical coherence that points to a wide range of electromagnetic interactions that may cover almost the whole electromagnetic spectrum.
 Popp, F. A., Maric-Oehler, W., Schlebusch, K. P., & Klimek, W. (2005). Evidence of light piping (meridian-like channels) in the human body and nonlocal emf effects. Electromagnetic Biology and Medicine, 24(3), 359-374.
Last modified on 16-Jun-20