Quote:
Originally Posted by circumpolar
My one concern is that this laser is powerfull enough to really interfear with aeroplains and the like. My old 10mW could not reach the clouds but this one does so with ease, even at an angle of 20degrees off zenith.
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Don't be so sure. The old pointer probably reached the clouds with ease, and with plenty of strength to dazzle a pilot. However it wasn't quite powerful enough to have enough light scattered
directly back towards you to be visible back on the ground.
The light scatters in all directions when it hits a cloud, if it makes a visible dot on the cloud then it is a very very strong beam at that point.