Laser 405nm on illuminating background
300 views · Published 28 November 2010 · 1:08 · Indexed 12 November 2026
Channel: GeekJoan · 2010 · Science & Technology
A 405nm laser on the type of material that is on exit signs.
300 views · Published 28 November 2010 · 1:08 · Indexed 12 November 2026
Channel: GeekJoan · 2010 · Science & Technology
A 405nm laser on the type of material that is on exit signs.