Rare earths' uses in defense industries are also significant. For example, lanthanum night-vision goggles, neodymium laser range-finders, guidance systems, communications, europium fluorescents and phosphors in lamps and monitors, erbium amplifiers in fiber-optic data transmission, samarium permanent magnets that are stable at high temperatures, Samarium precision-guided weapons, Samarium “white noise” production in stealth technology.
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