Scientists have invented a paper donut, which can not be crushed

Scientists have invented a paper donut, which can not be crushed

Employees of the University of California have come up with original origami.

All of the fold lines paper structures are made with precision lasers so that the pressure on either side of it is formed, but the diameter of the central hole is not changed. By applying this technology in practice, it is possible to protect any object, located in the center of the design from external influence during the impact.