Examlex
The beneficial and poisonous levels of many trace elements are very close in quantity.
Cathode
The electrode from which electrons exit a device or where positive ions enter.
Voltaic Pile
A group of voltaic cells connected together to form a battery.
Alessandro Volta
An Italian physicist known for inventing the battery in the 1800s, leading to the development of the first source of continuous electrical current.
Electricity
A form of energy resulting from the existence of charged particles, such as electrons or protons, either statically as an accumulation of charge or dynamically as a current.
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