I found his explanations interesting and, in fact, did answer some of the questions I've had regarding the authenticity of some photographs. Yet, I have believed in the existence of such energy--and have seen some myself.
I have always believed that our connection with the other side has had to do with frequency. That belief was verified for me by my late husband, which I wrote about in my book, A Walk Through Grief: Crossing the Bridge Between Worlds. I had said, while communicating with him from the other side, I felt unaware of time and a change of frequency. This is part of what he told me:
"When we are communicating in this way it is as if a part of you is stretched and bilocated over here and I, too, am reaching out to your side and we meet somewhere in the middle beyond what we know as time and space. Although you are still there in the physical and I am here in the non-physical, we merge our frequency and come together, minds touching, souls merging, and the communication takes place leaving behind time and space. It is as if you have stepped across with one foot. Think of it as an imaginary line and each of us cross over to stand side by side astraddle the line. That is where we merge our thoughts, feel the presence of the other. I see you radiating energy, I feel your energy, your love and I hope that you feel all that from me as the merger takes place. It is as if we are suspended beyond time and space, beyond the physical. We come together in love and it radiates out into the universe and is felt by all. You could say for me that it recharges my batteries, fills my heart with love and joy, and brings me peace. I hope it does the same for you." And yes, it does!
Dr. Ledwith's video: