Soytenly,

How do I know the other dimension?

I don't but that is where I thought I should begin the search.

In Rochester NY at 23 Strathallan Park I was in the back office when a Manx cat I was careing for suddenly fluffed up its fur twice its normal size. I followed its gaze to the left hand portion of the ceiling and saw a glowing light floating at about 10 inches a second, SUDDENLY a second globe of light like the first one came through the brick wall following the same path and trajectory of the leading ball of light. The light was soft and nebulous. I had the impression that it was not opaque but I felt as though I could see through it as one would peer through thick haze on a summer day. They were no more than 9 inches in diameter.
The cat was still freaked and the first ball was nearing the far wall close to the ceiling. It passed through the wall silently. With only seconds to spare the second ball was going to go through the wall so I jumped up on the sofa and neared my finger to the outer hazy glowing edge. There was no shock. I thought whether or not I go through the looking glass I better shove my whole hand inside the thing to know more about it. I think I did but withdrew it quickly since it was starting to go through the wall. I ran through 3 rooms to get to the area where the balls should have emerged. They did not or I had miscalculated.

I had as much adrenaline as I ever recall having. Although the door was shut to the rear office, the cat must have followed me out since it was no longer there.

It was then I began to read everything I could about dimensions starting with Flatland. That I would assume I was seeing another dimension was due to the fact it was not obeying physical laws that I knew. These incidents were perfeectly real but my interpretation of what the underlying cause or dimension might be had to come from my imagination.

It still haunts me that what i experienced was a tiny hypersphere poking its nose into my 3 D space. The only certainty I can really have is that it was not ball lightning.

At least 3 times in my life I have had the somewhat disturbing sensation of stepping from one dimension to a similar parallel dimension. Once again it could soley be imagination trying to explain a sensation I had never felt before.
The most dynamic "stepping out from one dimension" happened while I was sitting. A vibration began in my toes and slowly by about 2 inches a second began to rise up the legs like a narrow band of shiverring inside and outl. It got to my knees and I thought whatever this is if it gets to my heart I might have an electrical problem in the muscle and die. Still the vibration passed up through my hips and into my abdomen. I tensed for it to reach my chest and it went right up through my neck and head and was gone leaving me shivering as if I had dodged a bullet.

The very next day I broke both bones in my lower ankle. I refused to have surgury to screw the bones together and opted for natural healing. Maybe it was a mistake or maybe not but all the same it was a life changing event.

The other times following the first one have been far smoother.
ITs like a heighten sense of everything is the same but different even in the subjective speed in which time passes. Maybe I shouldn't have read the book The Man Who Folded Himself but I admit when I hear the saying that cats have nine lives, I take it a bit more seriously than I used to.