Julius Plucker is known for his experiments and discoveries related to electric charge. He is credited with the discovery of what is now known as the Plucker’s Law of Electric Charge. This law states that the amount of electric charge stored on an object is proportional to the product of the distance between two points on the object and the electric field strength between them.
Plucker conducted a number of experiments to demonstrate this law and to measure the electric field strength. He used a glass tube filled with an electrolyte solution and two metal plates placed at its ends. He then applied a voltage to the metal plates and measured the amount of electric charge that was stored on the glass tube. He found that the amount of electric charge was proportional to the product of the distance between the plates and the electric field strength. This confirmed his law of electric charge.