Anti Gravity Devices

In physical cosmology, astronomy and celestial mechanics, anti-gravity is the idea of creating a place or object that is free from the force of gravity. It does not refer to the lack of weight under gravity experienced in free fall or orbit, nor to balancing the force of gravity with some other force, such as electromagnetism or aerodynamic lift.
Instead, anti-gravity requires that the fundamental causes of the force of gravity be made either not present or not applicable to the place or object through some kind of technological intervention. Anti-gravity is a recurring concept in science fiction, particularly in the context of spacecraft propulsion.
There are several inventors that have invented anti gravity devices in the past which claimed to render an object weightless. Several succeeded, however most of their inventions were kept secret or were generally lost as time went by.
Some of these anti gravity devices involve magnets or magnetic forces, while others rely on electricity, or even vibrational frequencies.
It is a mystery as to why these masters of invention left no working devices behind for us to copy and use in mainstream society. Having working anti gravity devices could completely change our society and it`s way of propelling vehicles, and in so many other ways too.
In modern times there are have been some new inventions which are promosing but the still seem to lack the sheer amazing factor that inventors of late gave us.
Here are the list of inventors and their inventions. Each of these inventors have created anti gravity devices.
John Worrell Keely
The Lifter Device
Edward Leedskalnin - Coral Castle Builder
Possible anti gravity technology users of our distant past.
Other anti gravity devices which work, but are less impressive.

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