St. John, Thomas M. (Thomas Matthew), b. 1865 · New York, T. M. St. John · leaf 71
- them. If the end of a stripof bismuth be soldered to the end of a similar strip ofantimouj, and the free ends be connecfted to a galvanom-eter of low resistance, the presence of a current will beshown when the point of contac5t becomes hotter than therest of the circuit. The current will flow… … HOW ELECTRICITY IS GENERATED BY HEAT. 69 to antimony across the joint. By cooling the juncflurebelow the temperature of the rest of the circuit, a currentwill be produced iu the opposite direcftion to the above.The energy of the current is kept up by the heat absorbed,just as it is kept up by…
Electricity
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