Etymology of Electricity - Conceptual Problems

Conceptual Problems

Despite their similarities, substituting the word "charge" for "electricity" presents new problems. Older scientific papers still exist, and their authors constantly discuss quantities of electricity and flows of electricity (meaning charge and current respectively.) Those historical authors know that their readers understand just one definition: the term electricity means charge and nothing else. Modern students who read physics papers from periods prior to 1930 (approx.) should make a continuous effort to remain aware of this issue. If historical physicists discuss quantities of "electricity" implying "electric charge," yet the modern reader assumes they're speaking of electrical energy, the writings of those physicists will be quite difficult to understand.

Another problem arises because the population of physicists abandoned the term "electricity" without much public discussion and perhaps without much awareness on the part of their community. By silently altering the meaning of common and heavily-used terms, the scientific community caused an immense confusion on the part of the public. Whereas in the past the question "What is electricity?" was more or less easily answered, today the question itself has become meaningless. Is electricity a form of energy? Is electricity the same as electric charge? Is electricity nothing but a class of phenomena? Should we measure the quantity of electricity in Coulombs, or should we instead use amperes, joules, or watts, or even volts? Physics texts and reference books supply no solid answer, since physicists have gradually abandoned electricity as a scientific term.

And yet Quantity of Electricity still persists in its original definition in many major contemporary references. For example, in the modern SI units of physics, the SI definition of Coulomb is given as both the unit quantity of electric charge and also the unit quantity of electricity. Encyclopædia Britannica defines the Coulomb as the unit quantity of electricity. The Merriam-Webster dictionary, in definition 1a, defines electricity as charge. And until the late 1980s, the glossary in the CRC Handbook of Chemistry and Physics used the term "quantity of electricity" in place of "electric charge" in most of its definitions. Chemistry students will be familiar with Faraday's discovery that a unit quantity of electricity, when passed through an electrolysis cell, liberates a certain number of atoms of metal or gas. Under these definitions, electricity is not a form of energy.

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