Wow. Magic Pen Scientists at Hongtuo Joint Laboratory in Wuhan, China, have invented what sounds like a mysterious yet fascinating laser pen that can write in mid-air an intriguing approach that co… [+1504 chars]
Wow. Magic Pen Scientists at Hongtuo Joint Laboratory in Wuhan, China, have invented what sounds like a mysterious yet fascinating laser pen that can write in mid-air an intriguing approach that co… [+1504 chars]
