<P> Charge is the fundamental property of forms of matter that exhibit electrostatic attraction or repulsion in the presence of other matter . Electric charge is a characteristic property of many subatomic particles . The charges of free - standing particles are integer multiples of the elementary charge e ; we say that electric charge is quantized . Michael Faraday , in his electrolysis experiments , was the first to note the discrete nature of electric charge . Robert Millikan 's oil drop experiment demonstrated this fact directly , and measured the elementary charge . It has been discovered that one type of particle , quarks , have fractional charges of either − 1 / 3 or + 2 / 3 , but it is believed they always occur in multiples of integral charge ; free - standing quarks have never been observed . </P>
<P> Charge is the fundamental property of forms of matter that exhibit electrostatic attraction or repulsion in the presence of other matter . Electric charge is a characteristic property of many subatomic particles . The charges of free - standing particles are integer multiples of the elementary charge e ; we say that electric charge is quantized . Michael Faraday , in his electrolysis experiments , was the first to note the discrete nature of electric charge . Robert Millikan 's oil drop experiment demonstrated this fact directly , and measured the elementary charge . It has been discovered that one type of particle , quarks , have fractional charges of either − 1 / 3 or + 2 / 3 , but it is believed they always occur in multiples of integral charge ; free - standing quarks have never been observed . </P>
who came up with positive and negative charges
who came up with positive and negative charges
Michael Faraday
Michael Faraday