Liquid crystal was discovered by:
Correct answer: A. Friedrich Reinitzer
- A. Friedrich Reinitzer
- B. William Crooks
- C. Bravis
- D. J. J. Thomson
Explanation
Liquid crystal was discovered by Friedrich Reinitzer, an Austrian botanist and chemist, in 1888. He was studying the properties of cholesteryl benzoate, a compound extracted from carrots, when he noticed that it had two melting points. The first melting point was at 145°C, and the second melting point was at 178°C. This was unusual, as most substances only have one melting point. Reinitzer also noticed that the cloudy liquid between the two melting points had some of the properties of both a liquid and a solid. He called this new substance a "liquid crystal."
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About Properties of Liquids
Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
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