my son buy a laser point in a online shop laser acheter, but he choose the 200mw ,in my opinion, I think this is too powerful and it's dangerious! is there a laser expert can answer my question?
What is he using it for?, how old is he?, does he understand lasers are dangerous and should be treated like a firearm?, does he (and all others using or around the laser) have laser safety goggles?
for astronomy and he is 16 years old, he already buy the safety glasses,this shop selle safety glasses,too,and he told me do not worry about him, but I still worry about it so I'm here for your answer