Sometimes the simplest experiments are the best: for Bill Mehess, the idea came from noticing that a magnet placed perpendicular over a flat-magnetic field seemed to lose weight. Several hours later, he'd perfected a unique design that appears to negate gravity. Mehess claims a true 450-grams of weight reduction, and has video to back it up...*
"This device will exhibit a verifiable weight loss when activated. The weight loss can be measured from a distance up to 24 inches from the bank of permanent magnets to the device located in the plastic box.
A 12 volt deep cycle battery powers 2 electromagnets. When the remote control hand held unit sends a 24mhz signal to a receiver in the box it triggers a relay which energizes the two electromagnets.
The flux field from the electromagnets is of course vertical-north to south. The flux field from the permanent magnets are horizontal. When the two fields intersect the weight of the electromagnets is reduced.
At this point a measurable weight loss is shown on the scale. Also to illustrate this more graphically I have set up a simple beam balance. The weight loss can be increased greatly by:
a. Adding more electromagnets
b. Varying the distance from the permanent magnets to the electromagnets
c. Physically increasing the size of the electromagnets."
*NOTE: We'd also like to note that in this experiment, the permanent magnets are located in an external enclosure, which still offers valuable practical applications, but is not unqualifiably an AG effect at present. However, Mehess is confident that future iterations of the device will contain the magnets onboard to fully demonstrate a true antigravitic effect.
Site: Bill Mehess Online