Although I did not have the opportunity, I remember that in the subject of Hydraulic machines, a contest for the construction of hydraulic pumps began to be held to see which one could transfer more water in 1 minute. I do not know if the bomb in the video was for this contest of the faculty of Businessbut it made me remember
We have copied the text below that describes the Wimshurst Machine, because there are certain things that when modifying them they can only go to but ;-) The source: Homer's Page, a website that I recommend to all ...
Invented by James Wimshurst, first described in 1883 and used, among other applications, as high voltage source for early X-ray tubes, It is a electrostatic machine, consisting of two discs of insulating material, parallel, very close to each other and arranged on the same axis, in such a way that they can rotate rapidly in the opposite direction.
Its rotation is carried out with the help of a handlebar that acts on two pairs of pulleys joined by an endless rope, one of them crossed. The outer face of each disc has several metal sectors glued near its edges, which during rotation are rubbed with two flexible metal wire brushes, held at the ends of a metal bow.
Through the Science in the XXI feeds looking with the mind, I find an interesting post with botched electronic experiments. And there I discover the Electroscope and the search for information begins.
Un electroscope it is a really simple way to know if a body is electrically charged or not.
The electroscope was created by William Gilbert And although it is no longer used today as much more powerful and effective devices have been developed, it seems ideal for a physics experiment to be done in a laboratory class.
A diagram of the electroscope assembly would be as we see in the image obtained in Thales