||1. Concept of "Energy Gap"
"Energy Gap" indicates a gap in energy density between organs. Imagine, for instance, an organ changing the momentum. When an organ changes the momentum, it causes the relative difference in energy density with the background organs. This relative difference in energy gap indicates "Energy Gap." As seen in this process, "Energy Gap" usually occurs when an organ changes the momentum.
Notice that in the figures above, also when background organs of organ-B, which indicate organ-A and organ-B, change their momenta simultaneously, they cause "Energy Gap" with organ-B. This energy gap is just the same as that in the case already explained above. Importantly, this phenomenon teaches us that an organ maintains the relationship with the background organs, and causes "Energy Gap" on the basis of the relative difference in energy density with the background organs. The figues below explain this mechanism.