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Aluminium oxynitride is a transparent polycrystalline ceramic with cubic spinel crystal structure composed of aluminium, oxygen and nitrogen. It can be fabricated to transparent windows, plates, domes, rods, tubes and other forms using conventional ceramic powder processing techniques. Because of its relatively low weight, optical and mechanical properties, and its resistance to damage due to oxidation or radiation, it shows promise for use as infrared, high-temperature and ballistic- and blast-resistant windows. Click here to view the first image in today's viral picture gallery. Continue reading for a viral video of a crab that steals a GoPro camera.