18WuD2x

764 Yttralox • Y-Y circuit
Yttralox A transparent polycrystalline ceramic
composed primarily of yttrium oxide, which has
many applications in electro-optics.
yttria Formula, Y 2 O 3 . Yttrium oxide, a white powder
used in Nernst lamps.
yttrium Symbol, Y. A metallic element of the rareearth-metals
group. Atomic number, 39. Atomic
weight, 88.906.
yttrium-iron-garnet See YIG.
yttrium metal Any of the group of metals,
including yttrium, erbium, holmium, lutetium,
thulium, ytterbium, and sometimes dysprosium,
gadolinium, and terbium.
Yukon Standard Time Standard time of the ninth
time zone west of Greenwich, embracing the
Yukon Territory and a portion of southern Alaska.
Y winding See WYE CONNECTION.
Y-Y circuit See WYE-WYE CIRCUIT.