I can SEEEEEEEEEEEEEEE!
Wizard of LED poi !
Im a Thespian, But I'll Act Normal Around You Guys
Class 1 lasers are deemed eye safe under any conditions - they have a maximum output of 0.4 microwatts and even if viewed for prolonged periods of time, they do not produce eye damage.
Class 2 lasers emit no more than 1 milliwatt and are eye safe because the intensity of the radiation is such that if the beam enters a person's eye, he will blink and turn his head away. This is called the aversion response and typically limits the exposure to about 0.25 seconds during which time the radiation will not produce irreversible damage in the eye.
Class 3 is split into two: Class 3A which has an upper power output limit of 5 milliwatts aand Class 3B which has a limit of 500 milliwatts. Class 3A is confined to lasers that emit visible radiation and the beam diverges in such a manner that when it reaches the eye in any likely exposure conditions, sufficient energy to cause damage to the retina cannot enter the eye pupil. Class 3B lasers are very likely to cause damage to the eye before the aversion response operates.
Class 4 lasers emit more than 500 milliwatts and are capable of causing serious irreversible damage
Laser pointers are, or should be, class 2 or 3A, but some imports that come from poorly regulated sources have turned out to be inside the class 3B rating whem marked class 3A. These are obviously potentially hazardous. How can one be sure that one has not got a rogue pointer? Short of testing it yourself on calibrated test gear, you have to rely on the integrity of the supplier just as we all do with other technical products likes powerful drugs, household chemicals and electrical devices for the home. If you have any doubts, the local trading standards people should be able to help. But we don't get excited and ban all electric fires just because some unsafe ones are occasionally imported....
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your right ussualy, but green lasers are so much more powerful that they can shine withough dust, or water spray, or fog or anything like that. But along with that fun comes a lot more danger, they are much more powerful, and therefore can cause more damage quicker. be safe with them.
I can SEEEEEEEEEEEEEEE!
Cake or Death?
A couple of balls short of a full cascade... or maybe a few cards short of a deck... we'll see how this all fans out.