| 21. | Germanium's main application are semi-conductors and integrated circuits.
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| 22. | The 608 contained more than 3, 000 germanium transistors.
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| 23. | Russia and China used this as a source for germanium.
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| 24. | In recent years germanium has seen increasing use in precious metal alloys.
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| 25. | The first BJTs were made from germanium ( Ge ).
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| 26. | Germanium's sensitivity to temperature also limited its usefulness.
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| 27. | On average, germanium makes up 1 part per million of soil.
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| 28. | In Russia and China, germanium is also separated from coal deposits.
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| 29. | Earth's core is depleted in germanium and gallium.
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| 30. | The instrument detectors are nine high-purity germanium crystals.
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