Electric charge the charge of an electron is negative, "−e", while that of a proton is positive, "+e". Charged particles whose charges have the same sign repel one another, and particles whose charges have different signs attract. Coulomb's law quantifies the electrostatic force between two particles by asserting that the force is proportional to the product of their charges, and inversely proportional to the square of the distance between them. The charge of an antiparticle equals that of the corresponding particle, but with opposite sign. The electric charge of a macroscopic object is the sum of the electric charges of the particles
Graham (given name) Graham (given name) Graham () is a masculine given name in the English language. According to some sources, it comes from an Old English word meaning "grey home". According to other sources, it comes from the surname "Graham", which in turn is an Anglo-French form of the name of the town of Grantham, in Lincolnshire, England. The settlement is recorded in the 11th century "Domesday Book" variously as "Grantham", "Grandham", "Granham" and "Graham". This place name is thought to be derived from the Old English elements "grand", possibly meaning "gravel", and "ham", meaning "hamlet" the English word given to small