Filmed 1991-1996, 10b of 15 methods of levitating an object known to the author
John Iwaszko, edited from the video Antigravity the reality made in
1996. The antigravity method shown in this edit, at the time was classified as
Method 10 of 15, Electromagnetic Suspension-repulsion or attraction with feedback loop control,
Group IIIA. It is well known that the attraction
from a permanent magnet decreases with increased distance, and increases at closer distances, which is 'unstable', unless tethered or pivoted or rotated such as shown in methods 5, 6 and 9. It is also possible to create a stable system by using the opposite principle by varying the magnetic field of a permanent magnet or a dc powered electromagnet that will push a permanent magnet back to a stable position.
Stable magnetic levitation can be achieved by electronic control circuitry that can measure the position and speed of the object being levitated, and using some type of feedback system which continuously adjusts one or more electromagnets to correct the object's motion, thus forming a servomechanism, and although a direct current supplies the electromagnet the power, the electromagnet oscillates between off and on state and also switch between polarity so has been grouped with alternating
AC current levitation, also called
Electromagnetic suspension (
EMS), and is successfully controlled by a correct position of the sensor or sensors utilised as well, as exact current control such as driving the electromagnet with a pulse width modulated signal. The repeating pulse changes its width to apply the correct power to the device over time.
There are many methods that can be used to achieve EMS, such as magnetic field coils close to a levitated magnet. The crowning glory of this opus is the magical and remarkable levitating
240V 25W BC incandescent
GLS lamp, illuminated wirelessly by the high frequency field from the Electrical transmitter seen on the right, a receiving coil is looped around the lamp, receives the energy wirelessly through space and is illuminated. I could have been more environmentally friendly and illuminated four compact fluorescent lamps of 10
Watts each, but there is nothing more beautiful, the glow of an incandescent lamp. This combines my three scientific passions lighting, wireless electrical energy transmission and antigravity.
WARNING:- Some of these experiments operate directly from 240VAC mains supply or far higher voltages at high currents are potentially lethal. Do not build unless you know exactly what you are doing. Do not touch any part of the equipment while it is plugged into a mains outlet. And remember that the methods described do not conform to any electrical safety standard and many of the experiments performed are downright dangerous.
Powerful magnets such as neodymium magnets or powerful magnetic fields generated by coils can be dangerous and not to be played with. Powerful magnets or magnetic fields can crush fingers.
The power of magnetism can also cause chunks of metal to take flight and cause injury to body parts and or blindness.
Rotating machinery can pose a danger from rotating or reciprocating parts. Particularly when machine parts move toward each other, or one part moves past another, which can crush limbs.
Extremely intense sounds can burst ear drums or can be physically painful to human ears. High-intensity ultrasound waves are extremely dangerous to experiment with as they can heat human eyes or other tissue by absorbing ultrasound energy which becomes heat by vibration and corresponding energy loss.
Exposure to radio frequency energy or ionizing radiation that can be generated by coils can not only burn as they get hot but also cause radiation burns, damage to the skin or other biological tissue.
Direct skin contact with liquid nitrogen will cause severe frostbite (cryogenic or cold burns). This may happen almost instantly on contact, there is always a potential hazard when handling liquid nitrogen.
Be careful! Use good solid judgement in your work, and think ahead.
I John Iwaszko do not endorse the experiments shown, and am merely passing on information, I have learnt through experiment.
Safety is your responsibility!
- published: 29 Mar 2009
- views: 18888