46 i*ature'0 /IBiracIcs. 



from the above illustration that heat, elec- 

 trical energy, and mechanical energy are really 

 the same. Then you ask, how do they differ? 

 Simply in their phenomena their outward 

 manifestations. 



While there is much that we cannot know 

 about any of the phenomena of nature, it is 

 a great step in advance if we can establish a 

 close relationship between them. It helps to 

 free electricity from many vagaries that exist 

 in the minds of most people regarding it; 

 vagaries that in ignorant minds amount to 

 superstition. While it possesses wonderful 

 powers, they give it attributes that it does not 

 possess. Not long ago a favorite headline of 

 the medical electrician's advertisement was 

 " Electricity Is Life," and it was a common 

 thing to see street-venders dealing out this 

 " life " in shocking quantities to the innocent 

 multitudes ten cents' worth in as many 

 seconds. 



Science divides electricity into two kinds 

 static and dynamic. Static comes from a 

 Greek word, meaning to stand, and refers to 

 electricity as a stationary charge. Dynamic is 

 from the Greek word meaning power, and refers 

 to electricity in motion. When Franklin made 

 his celebrated kite experiment, the electricity 

 came down the string, and from the key on 

 the end of the strinpr ho stored it in a Leyden 

 jar. While the electricity was moving down 



