These threads are always the same.
>something interesting
>basic science
>conspiracy
>aliens bro

The picture is of a shitty testla coil.
It would make a field, you could use that field to ionize atomic particles.
Yes they would probably glow

could you suspend an object in the field? If the field was strong enough, sure.
But that's not reversing gravity, while it may appear to be floating you've just countered gravity with another force.
I can float a ping pong ball above a fan- that's not anti gravity either.

Could you use this to make something fly?
Well then you would have something like the LHC at CERN- where you build a monolithic EM coil and try to fire particles down it.
The particle moves- the coil does not...well it might move to relative to the mass of the suspended particle, but it's the particle which is going to move.