3543 x 5334 px | 30 x 45,2 cm | 11,8 x 17,8 inches | 300dpi
Informations supplémentaires:
The Wimshurst electrostatic machine consists of two discs (with thickness from 1 to 3 mm in diameter from 20 to 40 cm, most are large size plus electrostatic effect is pronounced) made of glass or plastic particular, as excellent Electrical Insulation. These discs are mounted on a support in coaxial and short distance between them, whether operated by crank or electric motor rotating in opposite directions using pulleys or wheels sprockets. On the outer surfaces of both discs is a series of areas of thin metal rectangular in equal number for each of them in order to have the so-called opposing sectors, which are essential for the functioning of the machine. On media are posed by the horsehair brushes metal bars neutralizzatici calls are necessary for the implementation of sliding contact between opposing sectors. As mentioned earlier, the operating crank through pulleys, the two disks rotate antefase and sfregando against brushes, store on their areas of the charges opposite polarity. Whenever an area comes into contact with a brush, his office changes from positive to negative or vice versa, the result is that the sectors we load positively about half the disc and the other negatively. Charging on static brushes is collected by collectors and used to polarise the armour of a condenser, you can create a current of a few tens of microamps. By linking the two spinterometro an armature, consisting of two electrodes, generally spherical in shape, it can cause electrical shock. The ball indeed create a strong electric field around them, the negative facilitates emission electron ionizzando air around the ball good, makes it to be able to set off sparks.
