On Wed, Jun 5, 2019 at 4:22 PM Richard Aiken <xxxxxx@gmail.com> wrote:


Given the highly exotic means of production, I suspect it will be a very long time until this is commercially available. :)

And limited real-time existence . . . it's only transparent while the laser is firing.

But there is ALON (a ceramic compound composed of powdered aluminium and other ingredients. According to Wikipedia, it's about twice as resistant to penetration as armored glass (e.g. a 1.7 inch thickness can stop a .50 BMG round - although the range at which this occurred is not revealed).

--
Richard Aiken

"Never insult anyone by accident."  Robert A. Heinlein
"I studied the Koran a great deal. I came away from that study with the conviction there have been few religions in the world as deadly to men as Muhammed." Alexis de Tocqueville
"We know a little about a lot of things; just enough to make us dangerous." Dean Winchester (fictional monster hunter portrayed by Jensen Ackles)
"It has been my experience that a gun doesn't care who pulls its trigger." Newton Knight (as portrayed by Matthew McConaughey), to a scoffing Confederate tax collector facing the weapons held by Knight's young children and wife.