Ive bought one of those 1mw lasers from eBay. The output on them is unpredictable. You need to warm it up in your pocket to get it going.
Quote:
Originally Posted by mithrandir
How useful a 1mW laser is depends on the light pollution. Around here they are next to useless. It takes about 10mW to provide a line visible to anyone more than arm's length from the person holding it, and either a permit or membership of an approved organisation like ASNSW.
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Yes and it also depends on the transparency. The beam you see is actually a reflection from the dust particles and moisture in the air. In foggy nights, its like jedi wars.