Understanding Different Types of Glass
Week Three: Ninth Anniversary Fund-Raising Drive for Behind the Black
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It is now the third week in my annual anniversary fund-raising campaign for Behind the Black.
Please consider donating. I am trying to avoid advertising on this website, but will be forced to add it if I do not get enough support from my readers. You can give a one-time contribution, from $5 to $100, or a regular subscription for as little as $2 per month. Your support will be deeply appreciated, and will allow me to continue to report on science and culture freely.
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An evening pause: Time for some technology. It is amazing the amount of really smart designs that are hidden in plain sight.
Hat tip Edward Thelen.
Nice find!
Speaking of armored glass reminds me of a post to his blog by Major Nicolas Moran entitled “Significant Emotional Events” about firefights in Iraq that shows how it performs in the real world. Afterwards he found this had happened one of his periscopes on his M1 tank (round was either 7.62X39 mm or 5.45X39 mm Russian) – he had no idea while the fight was on that it happened.
https://static-ptl-us.gcdn.co/dcont/fb/image/periscope.jpg
Making it even more emotional, Moran had his head out of the hatch during the engagement – experience has shown the risk is more than repaid with situational awareness which is the reason US, British, German and Israeli tank commanders do it – so if the Iraqi had shot just a bit higher, instead of killing the periscope, he would have taken Moran’s head off.