Video

Blue dot in middle of screen is ionized air. Yes you could make holgrams like this. My friend wowing me when showing me how to use a Yag laser. My supervisor insists it is bad for my eyes to look at the burning air. I reckon it is blue radiative recombination, he thinks its green and scattered light (and therefore dangerous) and therefore the blue seen on the screen is an illusion. He's also afraid of Stingray's though so I'm relaxed. I mean, who have they ever harmed??