In 1785 French physicist Charles Augustin de Coulomb designed a torsion balance to measure how charged objects interact. His careful experiments allowed him to observe the force between charges with precision. This tool became essential in revealing how electric forces behave.
Coulomb discovered that the force between two charges decreases as the square of the distance increases. This inverse square relationship matched similar patterns found in gravity. His work showed that electric interactions follow consistent natural rules.
He also found that the force grows when the charges are stronger. This direct proportionality connected measurable quantities to predictable outcomes. These relationships formed the mathematical law now known as Coulomb’s law, which describes how charges influence each other.
His experiments established a foundation for modern electromagnetism. Later scientists used his insights to study electric fields, potential, and interactions between particles. The clarity of his measurements helped confirm that electric forces follow stable and universal principles.
Coulomb’s work continues to support physics today. His law guides research in electronics, chemistry, and atomic science. By uncovering the connection between charge, distance, and force he helped shape the understanding of one of nature’s fundamental interactions.
See Also
Coulomb explosion
Coulomb Law
New Concept - IV - The Coulomb Law Misconception