Van De Graaff Electrostatic Machine Static Electricity Electrostatic Generator

US $199.99

Beijing, China
Jan 29th

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Vande Graaff Electrostatic Machine Static Electricity Electrostatic Generator It is a very good physical electrostatic demonstration instrument for the students, It can be used to demonstrate the charge properties, distribution; description of electrostatic induction principle; display of power line and point discharge phenomenon etc.. The main parts: The frame, motor, drying for incandescent lamps, organic glass cylinder, accumulator ball, adjusting screw, electric comb, a belt pulley, a rubber band ball, discharge, discharge ball insulating rod and so on Each component material and component specifications: The frame is made of plastic, the bottom is provided with rubber feet, size about 200 x 280 x 90mm; Organic glass tube diameter 64mm, length of about 320mm, wall thickness of not less than 3mm; Storage ball for stainless steel hollow spherical diameter 200mm, wall thickness 1.8mm, can be divided into two halves open; Pulley diameter not less than 30mm in diameter, width of 45mm, Rubber bandwidth is not less than 32mm; Discharge ball diameter not less than 60mm in diameter, With 15mm diameter of the insulating rod organic glass rod production, the length of not less than 150mm. Technical Parameters: Power supply voltage: AC 220V Power consumption: 70W Spark distance: >= 60mm Size: 300 x 200 x 600mm Demonstrating phenomenon : 1. Will make your hair erected We can stand on the insulation of the chair, hand on spherical metal machine cover. Because the human body can also be conductive, so when the motor is started, the charge to our body. But because the charge on the hair repel each other, the hair will be erected. 2. Attract the styrofoam ball When the styrofoam ball closer to machine the spherical cover, molecular charge distribution in styrofoam ball will change. In the intra molecular charge, positive and negative poles are slightly separated, produce the so-called polarization phenomenon. At this point charge and spherical molecular cover on the inner opposite produces tiny suction, thereby attracting the styrofoam ball. 3. Generate electric spark The grounding of the metal balls near motor spherical cover, a powerful electric field the charge by the spherical cover jump to the metal ball, produce a large number of ions and electrons in the air. Because the ion energy state than the molecules of air charged high, so they spontaneously release energy, spark. This is a discharge phenomenon in the air, such as lightning charge discharge phenomenon is jump to another cloud or the ground from a cloud. 4. Produced electric wind The surface charge density of the charged conductor tip region has higher, while the charge density is higher, the stronger electric field generated by the. And powerful electric field ionizing air molecules in the air around the tip, and the conductor oppositely charged ions or electrons are tip attraction, whereas those with conductor charge the same ions or electrons is tip exclusion to the distance, this phenomenon is called the tip of the [2] effect. When the ion motion drag of air molecules produced electric wind, can make the rotation of the fan blades.