The New Encyclopaedia Britannica, Volume 4 |
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Page 256
... colours of the negatives . When the three positives , usually in the form of transparencies , were superimposed , a full- colour photograph resulted . Another French experimenter , Charles Cros , discovered the process independently ...
... colours of the negatives . When the three positives , usually in the form of transparencies , were superimposed , a full- colour photograph resulted . Another French experimenter , Charles Cros , discovered the process independently ...
Page 812
... colour of Muḥam- mad's banner - the colour of vengeance . A black flag was used by the ' Abbasids in AD 746 ( AH 129 ) , the Umayyads choosing white by contrast and the Khawarij red . Green was the colour of the Fatimid dynasty and ...
... colour of Muḥam- mad's banner - the colour of vengeance . A black flag was used by the ' Abbasids in AD 746 ( AH 129 ) , the Umayyads choosing white by contrast and the Khawarij red . Green was the colour of the Fatimid dynasty and ...
Page 904
... colour . Three colours are not enough , as can be seen in a map of four regions with each region contacting three other regions . It had been proved mathemati- cally that five colours will always suffice ; and no map had ever been found ...
... colour . Three colours are not enough , as can be seen in a map of four regions with each region contacting three other regions . It had been proved mathemati- cally that five colours will always suffice ; and no map had ever been found ...
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