LCD: Explaining liquid crystal displays
In 1888 German botanist Friedrich Reinitzer discovered a substance that defied common sense. At 145 degrees Celsius it melted into a thick, milky liquid. Yet at 179C it seemed to melt again into a thin, clear liquid. Ref. Source 1
Its just so amazing how simple things around us can be changed to make the modern technology we have today. LCD is like a miracle.