1. Coulomb's Law describes the electrostatic force of attraction or repulsion between two point electric charges. The magnitude of the force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. 2. Charles-Augustin de Coulomb developed this law in the late 18th century using a torsion balance he invented to measure very weak forces. 3. Coulomb's Law led to the concept of electric field, which describes the area around a charged object where other charges will experience a force. The electric field strength is defined by Coulomb's constant divided by the distance from the source charge.