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5.1.c A systematic arrangement of bubbles
 The arrangement of bubble group becomes similar, because the method to form bubble is the same. That is, a small bubble is produced at the bottom of water. The bubble becomes bigger owing to production of hydrogen gas. Those bubbles are surfacing. The surfacing bubbles are unified at the bottom of layered bubble. But the surface of water is hard to keep. So, the big bubble is formed under the small bubbles. Fig.29 shows the systematic arrangement of bubbles.

       
  (a) after 2hours 42miniutes       (b) after 11days
Fig.29 The systematic arrangement of bubbles those were made from carbonated water (50cc) with iron powder (5g) egg shell (5g of CaCO3)


5.1.d Formation of the bubbles by iron carbide in the membrane after days
  The reaction of iron carbide and water produces hydrogen gas and organic materials. The reaction generates a bubble. The reaction takes place even in the membrane. So, the bubble that is composed with many small bubbles is formed. This structure is robust to destruction. Then, such bubbles increase, even if its structure is complicated.

     
  (a) after 75 hours 13 minutes      (b) after 75hours 16 minutes 

     
  (c) after 11days               (d) after 11days
Fig.30 The iron carbide bubble of complicated structure those were made of iron carbide in carbonated water (50cc) with powder of iron (Fe:5g) and egg shell (CaCO3:5g)


                     -5.2-                 to Index