Understanding Different Types of Glass
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.
From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.
“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of founder of the Mars Society.
Available everywhere for $3.99 (before discount) at Amazon, Barnes & Noble, and all ebook vendors, or direct from the ebook publisher, ebookit. And if you buy it from ebookit you don't support the big tech companies and I get a bigger cut much sooner.
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.