1. LCD — 2023-09-23 15:53:09

   … require the presence of impurities, and George focused on finding new materials for this. == Background == The liquid crystal materials known then had to be heated to 70ºC or more, usually decomposed in a few minutes and were rather viscous, wh…
   … compounds" width="400" }} George’s defining achievement was to use his deep knowledge and long experience of liquid crystals to eliminate this linkage entirely and to synthesise a number of biphenyl molecules, with a cyano group at one end, tw…
   …in of a defined length at the other. == Cyanobiphenyl Compounds == Three of these cyanobiphenyl compounds were liquid crystalline over a narrow interval at around room temperature and these were revealed to the world {{Datediff from="22/3/1973"}…
   …osity, proved extremely stable (as George had predicted) and, formulated as eutectic mixtures, they could remain liquid crystalline from -10ºC to +60ºC. These were **patented** and subsequently licensed by the MOD, through the aegis of Cyril H…

2. Toilet — 2023-09-08 09:57:11

   … an S-trap. He popularised public lavatories or 'Retiring Rooms' by installing the first flushing public toilets in the Crystal Palace for the Great Exhibition of 1851; over 827,000 people paid attendants one penny to use the 'Wash-rooms'. His ins…

3. Atomic Clock — 2021-08-20 10:45:05

   … to further his ambition to build highly accurate time pieces. He investigated the potential of tuning forks and quartz crystal oscillators for precise time measurement. His research led to his development of the quartz ring clock in 1938, which u…
   …sed the electrically induced vibrations of a quartz crystal to measure time. The clock soon become the industry standard for time measurement at observatories throughout the worl…

4. Public Park — 2021-08-14 20:30:20

   …="Greatexhib.jpg" class="right" title="The Great Exhibition 1851 " width="300" }} {{Image url="Crystal_Palace.jpg" alt="Crystal Palace designed by Paxton" width="320" }} …

5. Powered Flight — 2021-04-05 22:36:49

   …-powered triplane at an exhibition arranged by the '''Aeronautical Society of Great Britain''' (founded in 1866) at the Crystal Palace, London, in 1868. The plane was flown indoors from a wire unmanned at twenty miles per hour in front of the Prin…

6. Vacuum cleaner — 2020-10-11 23:24:10

   …inventors staked their claims. When a serious outbreak of '''Spotted Fever''' broke out among soldiers stationed at **Crystal Palace**, all conventional attempts to control the epidemic failed. Booth was called in, and '''23 tons''' of dust were…

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