| 31. | Yttrium iron garnet phase shifters vary the phase delay using the strength of a magnetic field.
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| 32. | Yttrium oxide-sulfide activated with europium is used as the red phosphor in color CRTs.
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| 33. | Three group 3 elements occur naturally, scandium, yttrium, and either lanthanum or lutetium.
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| 34. | The YIG filter has a yttrium iron garnet sphere that is tuned with a magnetic field.
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| 35. | This permitted the discovery of four new elements : Yttrium, Terbium, Erbium and Ytterbium.
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| 36. | Concentrated nitric and hydrofluoric acids do not rapidly attack yttrium, but other strong acids do.
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| 37. | :It was probably a demonstration of a YBCO ( yttrium barium copper oxide ) superconductor.
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| 38. | For three-fourths of the patients, yttrium-90 shrank the tumors until they disappeared.
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| 39. | Alternative materials, such as yttrium oxide, offer better optical performance, but inferior mechanical durability.
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| 40. | Yttrium oxide is also used to make yttrium iron garnets, which are very effective microwave filters.
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