Diamond burr, as fast as you can spin it (bidding starts @ 10k RPM), underwater. Use very gentle presure. Let the diamond grit do the work. Tape, or something, to mask the mirror surface for protection. Bset Idea I've got.
At least those could, in theory, be repaired with new pump diodes. I guess I'm triggered because I really like the 462 color. These were some of my favorites for a while. Just gives me a sad seeing these being wasted stupidly. But, their diodes, their money. :sigh:
Why? It was the most expensive ride to orbit ever. What was the maximum # of launches/year? It started out as a pretty decent design, then the military stuck their thumbs in the pie and cut it's capabilities in half.
Buck converter was pretty much what I had in mind. Maybe parallel a couple of VRMs used for CPUs? Would take a custom PCB but would be pretty efficient. My motherboard can feed my CPU well over 100A @ 1.25 volts so they could handle the load.
A linear regulator for this current @ only a couple volts is gonna generate a lotta heat. Well over 100 watts if you start with a 5V power supply. A switching regulator would be more complex but a lot more efficient.
https://www.survivallaserusa.com/Eagle_Pair__190-400nm___560-640nm_Laser_Safety_Goggles/p1667092_12825348.aspx
555 is right at the edge for these, but they cover 573.
"An increasing number of studies has revealed that long-term blue light (400–500 nm) exposure induces oxidative stress in the retina and causes severe damage to retinal tissues, especially RPE cells [13,14], with harmful effects peaking at 440 nm [15,16]."
I think you meant ....clearly says it WAS in Mexico. From the headline of the article: Shocking video footage from a fireworks event in Tultepec, Mexico, shows a huge crowd targeting the aircraft as it flies above.