hello, ive asked myself a couple of times, why my Laser has such a short beam....the strongest one i have is a 1500mw Blue Laser, now i cant say how long the beam is, might be 2km or only 500m, its hard to tell...in any case, the beam suddenly stops, it doesnt get weaker or thinner, its bright all the way through and then it looks like someone "cut" it off. Is this the nature of any Laserbeam?