Fourth, you can easily buy 500mW+ pens on t'internet.
aa777888, why stick at a mile distance to prove your point?
Laser Range Finding:
At the Moon's surface, the beam is only about 6.5 kilometers (four miles) wide and scientists liken the task of aiming the beam to using a rifle to hit a moving dime 3 kilometers (approximately two miles) away. The reflected light is too weak to be seen with the human eye: out of 100,000,000,000,000,000 photons aimed at the reflector, only one will be received back on Earth every few seconds, even under good conditions.
