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On Wednesday I tried to define a #metamaterial.

Now it's time to define #metals, which should be way easier, right?

Spoiler: even in a #metallurgy group @LNM_eth, not everyone agrees!

First a list of "high-school science" definitions that don't really help us. The

"Metals are reflective": Yes but not all reflective things are metals. Not definition friendly. Image
"Metals are ductile and malleable, easy to work with": Not necessarily. Good luck working with Tungsten, which is definitely metal.

This article tells a bit about how hard making the Tungsten filaments that we used on lights was!

americanscientist.org/article/tungst…
Read 16 tweets
Heartening to know that today there are gobs & scads of young #Dentist's who want to learn more about who precisely WAS "C.C. Bass, M.D", and what did he have to say about #PreventiveDentistry?
For the last few decades or so, just about any young #Dentist, when they first learn the real story of who "C. C. Bass, M.D." is, and what he actually did, are puzzled.
A couple of channels results from their #DentalSkool teaching, and thus their thinking.
Read 37 tweets

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