I am thinking of getting a purple 405nm wavelength laser pointer 5mw. I have seen the cool pictures of green lasers at night and was wondering if purple lasers can also be seen at night or dim light conditions.
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Like /id/2140083 When I want my bike to be secure I use a U-Lock. If I am just running in somewhere safe for a couple of minutes, then I will use a cable lock, but I always lock my bike. One technique some people do is paint the bike in flat black or something equally ugly so it won't appear expensive.
