408 



GENERAL SCIENCE 



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MORSE CODE 

 INTERNATIONAL MORSE ALPHABET 



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Cells. An electric cell may be made by so placing pieces of 

 zinc and copper, called an electrode, in dilute sulphuric acid that the 



two pieces of metal are 

 separated. If a wire is used 

 to connect them outside the 

 acid an electric current will 

 flow from the copper (+) 

 to the zinc ( ) on the wire. 

 From what and to what 

 does the current flow inside 

 the battery? 



Wet Cells. The most 

 FIG. 307 Two wet batteries attached in series, common wet cell used is 



