tungsten

So far they have built and used a prototype robot to make millionth-of-a-meter scratches in aluminum with a fine tungsten needle.

We have several business houses where tungstens are used as window lights only, and find that in nearly every one the wiring was arranged to get more light, leaving the consumption about the same.

We apprehend that this is not the acid of a calx ponderoſa, but rather a diſtinct acid conjoined to common calcareous earth, ſince, in fact, in another place, § 97, the tungſten is mentioned as a calx ſaturated with a peculiar acid, perhaps of a metallic nature, for which the author himſelf refers us to the above § 33, and ſeems to think it the ſame as the acid there mentioned.