When the plastic strip is rubbed on the skin, electrons from the skin are transferred to the plastic giving the plastic a negative charge. When the plastic is moved near the desk, electrons in the ...

See, everything around us is made up of atoms which have a positively charged nucleus surrounded by negatively charged electrons. Normally, the positive and negative charges cancel out because ...

Soils are composed of a mixture of sand, silt, clay and organic matter. Both the clay and organic matter particles have a net negative charge. Thus, these negatively-charged soil particles will ...

A team of researchers at the Max Planck Institute for Medical Research made a striking discovery—a protein with contradictory ...