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Liquid crystals in thermometers, thermographs, computers, TVs and solid-state devices were too far in the future for him to imagine |
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Lehmann dedicated 25 years of work to studying these strange chemicals |
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In his last book he suggested many applications, mostly in power generation and transformation, but none of them proved practical |
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They respond to heat, light, sound, mechanical pressure, electromagnetic fields and radiation and even some chemical vapours |
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Many of them wrote off liquid crystals as chemical impurities with no scientific or practical merit |