( Week 3 of Dec 2010 )
Christmas, Climate change with Joel Gilmore, Double rainbows. Sketches: Nativity, Centipede, History 25th Dec, Jesus Addiction.
Thanks to @girlclumsy, Lily and Jack for their voices
Michael Jude Peter Barnes (legacy)
On Transparent Aluminum From Wikipidea
Aluminium oxynitride or AlON is a transparent polycrystalline ceramic with cubic spinel crystal structure composed of aluminium, oxygen and nitrogen. It is currently marketed under the name ALON by Surmet Corporation. ALON is optically transparent (≥80%) in the near-ultraviolet, visible and midwave-infrared regions of the electromagnetic spectrum.
Combination of optical and mechanical properties makes this material a leading candidate for lightweight high-performance transparent armor applications such as bulletproof and blast-resistant windows and for many military infrared optics. AlON based armor has been shown to stop multiple armor piercing threats of up to 50 cal.