This reaction distinguishes the members of the yttria group from most of the other earths.

Aim: Newer zirconia materials may have greater strength degradation under cyclic fatigue with increased yttria and cubic content.

Here is an egg-shaped bulb, shown in Fig 19, containing some pure yttria and a few rough rubies.

The alkaline earths are instances of this kind of reaction, also glucina oxide of cerium, tantalic and titanic acids, yttria and zirconia.

A group of so-called "rare-earths," among which are zirconia, thoria, ceria, erbia, and yttria (these are oxides of zirconium, etc.)

With yttria in a vacuum tube, the point of maximum phosphorescence, as I have already pointed out, lies on the margin of the dark space.

See how well the rubies and yttria phosphorescence shows under molecular bombardment, at an internal pressure of 0.00068 millimeter, or 0.9 M.

Yttria is found in gadolinite and some other rare minerals.

25, has a flat aluminum pole, in the form of a disk, at each end, both coated with a paint of phosphorescent yttria.