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INTERESTING INVENTIONS


SOME  INVENTIONS  HAPPENED  IN  A  VERY  INTERESTING   WAYS  IN  THE  HISTORY  OF  SCIENCE.
THEORY  OF   DISPLACEMENT -
The  Ancient  Greek   scientist   was  trying  to  find  a  way   of  determining    whether  a  crown  was   made  of  pure  gold.While  pondering  the  problem  ,Archimedes   climbed  into  his bath  and  saw  the  water   level  rise.He  realized  that  he  could  compare    the  volume of  gold   in  the  crown   with  a  lump  of   pure  gold  of  the  same  weight   by  submerging   them  in    a  fluid and  comparing   the  rise   in  water   level.He  leap  out  of  his  bath   and    cried  "Eureka ,Eureka."("I  have   found  it")  
"Archimedes'   principle  indicates  that  the   upward    buoyant   force  ,that is  exerted  on  a   body  immersed  in  a  fluid  ,whether  fully  or  partially   submerge, is  equal  to   the  weight  of  the  fluid  ,that  the  body  displaces.Archimedes  principle   is  a  law  of   physic 's   fundamental  to  fluid  mechanics. Archimedes  ,the  great  Greek   scientist   formulated    this  principle."


X-RAY-  While   sitting  up  a  cathode    ray    generator  in  1895  Wilhelm  Roentgen   noticed  a  faint  fluorescent   effect  on  a chemical  coated  screen  in  the  room.This  way  he  had  discovered  invisible   X ray  ,which  can  pass through  cardboard ,wood,and  paper.,  but  not  through bones.



SYNTHETIC  DYE- In   1856  ,  ,  William  perkin    was  attempting  to  produce   Synthetic  quinine   to  treat  malaria  but  the  experiment  produced nothing  but  a  purple mess.Perkin  spotted  an  opportunity at  once   and  set  up a  factory  to  produce  the  first  synthetic  dye.  



MICROWAVE -  A  chocolate   bar   in  Percy spencer's    pocket melted     as  he stood   in   the path   of  radiation    from   a  radar  generating  machine   in  1945.He  put  corn  kernel   in  the  path  of   the  beams,  and  they,  popped .Then  ,he  had  discovered  the  principle   behind  the  microwave  oven.


ICE CREAM    CONES-  As  it     happened  ,an   ice cream   stall    at  the  1904  world  fair   in  st   Louis , USA ,  run  out  of  dishes. The  neighboring  stall   sold  wafer -thin  waffles  and  the  stall  holder   came   up  with  the  idea   of  rolling  them   into  a  cone  and  topping  with  ice cream.Thus  ice cream  cones  or  softy  Ice cream  invented.

POST - IT@  NOTES -  In    1968   ,   Spencer   Silver   was  trying  to    find  a  new  strong  adhesive   and  came  up  with  a glue   that  didn't  even  hold  pieces   of  paper  together  firmly.In  1974  his  co-worker  Arthur  -Fry   thought  of  a  use   for  the  non  sticky  adhesive   and  the   post-it@note   was   born. 




  

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