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When I point a green 532nm laser up in the ceiling for example, it looks like on the video below but ofc in green... My question is HOW does this happen?

Hello guys :D So right now im competing in a challenge! Its a challenge who has Sweden's best electronic music-list! And now i´m on 2nd place. So I thought that u guys maybe could vote for me and help your laserfriend! The 1st prize is 2 VIP tickets to the sold out Swedish House Mafia concert...

Well, I haven't introduced myself yet, even tough I have been around here for some time... I think I will fit in here pretty good. Im from Sweden and live in Stockholm, anymore from Sweden btw? AND Laserbee.... no need to post the rules ;)

Haha so what do we say to this? I think even more people will buy from wickedlasers... sadly :( Hmmmm, the embeed dont seems to work out for me dont know if its just my computer maybe.... But here is the link: Lasers vs. iPhone 5! - YouTube

Was on the toilet :toilet: when I started thinking and wow I just flew away in my dreams... Here my question. If you have a sphere made of a "one-way mirror" (a mirror you can see into, and on the other side there are just reflection) If we would be able to make it 100% reflective and with no...

Yobresal Blue-Ice Laser - 445nm This is my first review ever on lasers, so don't judge me to hard... but please ask things you think I forgot. As always Yobresal is amazing, fast replies, always listens what I have to say and comes with suggestions. I bought it on the Sunday noon and...

So today I got my new 532nm 150mW pen from laserbtb.com. I opened it and inserted the batteries, used the keyswitch to "green" and tried it. Nothing happened, or the blue led indicator did light up but noting more than that.... So the LED is lit up but no laserpower coming out. Someone know...

Maybe some of you have seen it before and I think many of you already know the most things he write about in this article but I still think it deserves to be seen. Cool Things You Can Do With a Blue Laser: Reflection vs. Fluorescence | Wired Science | Wired.com :)