A new metal that's 99.99 percent air is durable enough to be used as a building component in aircraft and rockets.
The so-called microlattice was invented by Boeing and this week, the aerospace engineering firm released a video showing just how light the material is.
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In it, Sophia Yang, research scientist of architected materials at HRL Labs, who worked with Boeing on the project, holds a smalls square in the palm of her hand and then blows on it.
The metal floats to floor lazy as a feather.
Yang says that in addition to being lightweight, the material absorbs energy. A small package of it wrapped around an egg could absorb the impact of a 25-story drop.
The structure of the microlattice can be compared to that of bone. Although the airy metal is lighter than bone, it does have a similar open cellular structure, which is part of what gives it the double characteristics of being durable and lightweight.
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Such a material could be used as a structural component in airplanes, which would create more room inside the fuselage, while also making the plane lighter in weight, which saves on fuel.
Watch the video below for more details.