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China has invented a pen that can write in the air

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China has invented a pen that can write in the air
The revolutionary device was created by specialists from the Hongtuo Joint Laboratory for Ultrafast Lasers, located in Wuhan. By knocking out electrons from oxygen atoms, these particles are converted into ionized plasma, which serves as "ink".

China has invented a pen that can write in the air


Local publications have found that a device for detaching electron particles and converting them into a light-emitting plasma uses ultra-short high-intensity laser pulses. The energy density of a laser beam is a whopping 100 terawatts per square centimeter. The researchers used 3D scanning to position the pixels.

It is curious that in the process of operation, the power of the pen is capable of reaching up to 100,000 megawatts. This amount of energy is produced by a large country with a developed infrastructure. At the same time, it is noted that the bursts of energy from the device are short, so its operation is relatively safe. Scientists expect that their development will find application in quantum computing, visualization and other new technologies.
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