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We were at the New Years celebrations at New Quay in Melbourne Docklands about 3 years ago and I noticed they had green lasers producing pretty patterns on the ground and sides of some buildings. If you stood on the pattern on the ground, you could look directly at the laser producing the pattern....I remember thinking to myself at the time "and they are worried about me pointing my 5mW at an aircraft 1000m away, but this thing is about 10m away and is a hell of a lot more than 5mW". I really hope they do something about public displays like this one.
I also noticed a couple of articles in Sky at Night last year were some advertising gurus had wanted to put in a laser tower that would produce an "artificial" aurora in order to attract tourists! Fortunately, they were able to quash the project. Now what would happen to an aircraft coming in to land if it flew into the path of such an instrument capable of creating an artificial pattern in the sky visible to everyone in the town!
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