An interesting phenomena that I've noticed is how the beam does seem to terminate suddenly at some given distance as it appears to the naked eye. Maybe it's how our limited ability to discern spatial detail on something as small and precise as a long skinny beam and point of light, distorts our perception of distance. I'll point mine at say a line of trees merely 150 yards away and it seems the spot is just there over the trees but it doesn't look like it goes on through them where it can.. It just sits right at the trees at an absolutely fixed distance. Obviously it's not really working like that, but it's an optical illusion I suppose that it looks that way. I've often wondered if there's some quantum thing going on with these lasers. Like they work with our own consciousness and awareness somehow. There was an experiment that seemed to imply that, interestingly enough