On Sunday, 1 October 2023 at 09:31:53 UTC+11, Arindam Banerjee wrote:
On Sunday, 1 October 2023 at 00:00:39 UTC+10, Arindam Banerjee wrote:
Simple enough for any engineer to understand, but not for the dogmatic sorts.
Some kid has made that sort of wheel run a generator which lights a bulb and runs a fan.
That is on Facebook, believe it or not.
If it works, those who need small amounts of power can repeat what is shown there.
The busting of some dearly held beliefs by academics will be a by product.
Good.
https://www.facebook.com/3TechnologyVDO/videos/3726646404221033
This time, using a single powerful permanent magnet used in microwave ovens.
This puzzled me for a while. Was it a hoax? Now after working it out I do not think so, but I may need to explain. It is ingenious. Two screws are used with copper wire to form a reasonably powerful electromagnet, considering the steel cores. Now see
how they are placed in a NS-SN configuration. There is a very poweful permanent magnet, for the type used in microwave ovens, attached to the armature of a small DC generator. The output leads from the generator are connected to the two ends of the
electromagnets. A resistance is put to control the current. To begin with nothing happens, then it is jump started with a separate battery. After this jumpstart the battery is taken away and perpetual motion is established. The question now is, is this a
hoax and if so, how. Or, how is it done? Well, my thinking is that the electromagnets create a steady magnetic field, which is discontinous at the centre due to the way the winding is done. The North of the permanent magnet is pulled one way, and the
South is pushed, causing the rotation. But after half a turn, there should be repulsion causing it to stop? Why does it keep on rotating? My thought is that the inertia from the heavy permanent magnet keeps it moving, despite the force/torque that
opposes this motion for one half of the cycle when the magnetic fields try to stop it being opposed - north faces north and south faces south. If the resistance is too low, then more current will go through the electromagnet causing stronger magnetic
field which would make the permanent magnet move too fast, perhaps then causing some mishap. The energy is not really free, you have to put it all together - it is direct energy from the sun that is free!
And
https://www.facebook.com/greatdiyidea/videos/603231088687771
Amazing how street kids are wiser than all the bald (or not bald) beardos(or clean-shaven) in the Physics Departments of all the world's universities, great and small.
The One True God has a sense of humour.
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