You can even ‘touch’ the patterns.
Chinese scientists have developed a powerful laser that can practically burn the air to produce patterns.
The peak power of Cao's laser pen can reach a million megawatts due to the incredibly brief pulse duration, which is comparable to the whole utility-scale electricity producing capacity of the United States. “With the brand new device, we can draw in the air without using paper and ink,” Cao Xiangdong, lead scientist at the Hongtuo Laboratory of Ultra-Fast Laser in Wuhan’s optics valley, told Science and Technology Daily, as reported by theAccording to Cao, "The display is the culmination of our research over more than a decade."
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