The neutron is a subatomic particle with no net electric charge and a mass slightly larger than that of a proton.
Outside the nucleus, free neutrons are unstable and have a half-life of 611.0±1.0 s (about 10 minutes, 11 seconds).
A neutron spontaneously breaks down into a proton, an electron, and an electron-antineutrino.
The radius of an electron in the ground state of a hydrogen atom is known as the Bohr radius and is equal to 0.529 angstroms.
This is tens of thousands of times larger than the nucleus.
It is often said, therefore, that the electron is too big to fit inside a neutron.
But that is only true if the only force binding the electron inside the neutron is electromagnetism.
If a much stronger force were attracting it then it would indeed fit inside the neutron.
The only force strong enough to do that is the strong nuclear force.
Unlike all the other forces the strong_force actually increases with (and is proportional to) distance from the center.
(All other forces decrease rapidly with distance)
Gamma rays emitted from nuclei typically have energies up to around 10 million electron volts.
(2.4 × 10^21 Hz)
Neutrinos have only one millionth of the mass of an electron yet they have the same amount of angular momentum. This suggests that they might be rotating fast enough to produce a very powerful and energetic gravito-magnetic field.
Strangely, particles with gravito-magnetic fields would spontaneously align opposite to one another thereby canceling out each other's fields.
(Exactly the opposite of what particles with magnetic fields do)
Might this not explain some of the counterintuitive quantum mechanical behaviors that are seen in atoms? 
https://en.wikipedia.org/wiki/Electron_pair
https://en.m.wikipedia.org/wiki/Cooper_pair
Just as a neutron can be thought of as a spinning proton plus a spinning electron (albeit a surprisingly small one) with no net electric field yet still having a net magnetic field so a neutrino would consist of a spinning negative gravitational charge and a spinning positive gravitational charge with no net gravitational charge yet still having a net gravito-magnetic field. If so then there should be quite a strong gravitational field within the neutrino.
Perhaps this is the source of the van der Waals force
Gravito-electromagnetism is fascinating but the analogy with electromagnetism does break down in one crucial aspect.
The gravitational field is not so much a field of "force" as it is a field of "acceleration".
Everything within that field accelerates at the same rate regardless of its inertial or active gravitational mass.

neutron = proton+electron+neutrino
Neutino = positive active gravitational mass + negative active gravitational mass + ?
if we could split the neutrino into its constituent parts then maybe we could use those to create an anti-gravitational effect. 
(And possibly a propulsion system too)
(It might not be necessary to completely separate the two parts. A simple dipole field might be sufficient)
Perhaps tau neutrino = electron neutrino + muon neutrino
Outside the nucleus, free neutrons are unstable and have a half-life of 611.0±1.0 s (about 10 minutes, 11 seconds).
A neutron spontaneously breaks down into a proton, an electron, and an electron-antineutrino.
The radius of an electron in the ground state of a hydrogen atom is known as the Bohr radius and is equal to 0.529 angstroms.
This is tens of thousands of times larger than the nucleus.
It is often said, therefore, that the electron is too big to fit inside a neutron.
But that is only true if the only force binding the electron inside the neutron is electromagnetism.
If a much stronger force were attracting it then it would indeed fit inside the neutron.
The only force strong enough to do that is the strong nuclear force.
Unlike all the other forces the strong_force actually increases with (and is proportional to) distance from the center.
(All other forces decrease rapidly with distance)
Gamma rays emitted from nuclei typically have energies up to around 10 million electron volts.
(2.4 × 10^21 Hz)
Neutrinos have only one millionth of the mass of an electron yet they have the same amount of angular momentum. This suggests that they might be rotating fast enough to produce a very powerful and energetic gravito-magnetic field.
Strangely, particles with gravito-magnetic fields would spontaneously align opposite to one another thereby canceling out each other's fields.
(Exactly the opposite of what particles with magnetic fields do)
Might this not explain some of the counterintuitive quantum mechanical behaviors that are seen in atoms? 
https://en.wikipedia.org/wiki/Electron_pair
https://en.m.wikipedia.org/wiki/Cooper_pair
Just as a neutron can be thought of as a spinning proton plus a spinning electron (albeit a surprisingly small one) with no net electric field yet still having a net magnetic field so a neutrino would consist of a spinning negative gravitational charge and a spinning positive gravitational charge with no net gravitational charge yet still having a net gravito-magnetic field. If so then there should be quite a strong gravitational field within the neutrino.
Perhaps this is the source of the van der Waals force
Gravito-electromagnetism is fascinating but the analogy with electromagnetism does break down in one crucial aspect.
The gravitational field is not so much a field of "force" as it is a field of "acceleration".
Everything within that field accelerates at the same rate regardless of its inertial or active gravitational mass.

neutron = proton+electron+neutrino
Neutino = positive active gravitational mass + negative active gravitational mass + ?
if we could split the neutrino into its constituent parts then maybe we could use those to create an anti-gravitational effect. 
(And possibly a propulsion system too)
(It might not be necessary to completely separate the two parts. A simple dipole field might be sufficient)
Perhaps tau neutrino = electron neutrino + muon neutrino
