Recent content by jspear

Please note that I neither hypothesize the existence of such particle, nor know any evidence of it. This is purely a what-if scenario. So, my questions are: 1)Is there any law or whatsoever that forbid the existence of a massless particle that possesses charge? 2)If such particle exist, how...

Hi Bob, thanks for the fast reply. :smile: I can tolerate expensive things, what I don't want is to get ripped off. Actually, this is the reason I'm forced to look for help in the Internet. Let's just say that in my country, education and science are not a priority, and finding a...

I'm looking for a laser safety glasses. The biggest laser I'm going to use is a <20 mW green (532±10 nm) laser, with no infrared leakage (though I checked it with only a phone camera in night-vision mode), so I will need something good enough for this. I also have other green and red lasers, but...