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Science center

This gallery related to practical objects that led to easy learning of scientific concepts (physics, mechanics and …).

For example you can see there:

Van de Graaff generator

Van de Graaff generators are made up of several parts: a motor, a belt, two rollers, two combs and a metal sphere. As the motor turns, the rubber belt first goes over the roller. One comb pulls electrons from the roller (which loses electrons easily) and transfers them to the rubber belt. The second comb collects the electrons from the belt and stores them on the metal sphere. The motor turns very fast, so the sphere quickly collects lots of electrons and becomes negatively charged. Touching a charged sphere is truly a "shocking" experience!

Van de Graaff generators can build up high impressive voltage. This voltage is used for industrial and educational purposes. The best known industrial application of Van de graph is particle accelerator.

Double Cone and Inclined Plane

A double cone climbs up diverging inclined rails. This occurs because the diverging structure enables the center of gravity of the double cone to go down whereas at the same time the double cone itself climbs up the rails. In this case the center of the gravity of the double cone is lowered because of the diverging structure even though the rails climb.

Pendulum Wave

Pendulums are attractive scientific devices. There are many different types – the pendulum wave, the balancing pendulum, the Foucault and others. The pendulum wave is composed of multi-lengths. When being set into oscillation, the pendulums start to swing in the pattern of a traveling wave, whose wavelength gradually becomes shorter and blurs the wave pattern, forming a temporary chaos. Afterwards, the odd and even numbered pendulums oscillate back and forth in the opposite direction, forming two opposing swinging lines. A few seconds later, the pendulums resume oscillating in the mode of traveling wave, similar to the earlier phase of oscillation but actually in a reverse direction and finally, they return to the pattern of a straight line and complete the first cycle.