The difference between gravitational
mass and inertial mass
What is the Equivalence Principle, per wikipedia: https://en.wikipedia.org/wiki/Equivalence_principle#The_weak_equivalence_principle
"In the theory of general relativity the equivalence principle is the equivalence of gravitational mass and inertial mass, and Albert Einstein's observation that the gravitational "force" as experienced locally while standing on a massive body (such as the Earth) is the same as the pseudo-force experienced by an observer in a non-inertial (accelerated) frame of reference."
It has been assumed by most people that whatever it is that
gives matter the characteristic of inertia is also the thing that gives matter
the characteristic of gravitational attraction. It has been assumed there is
some intrinsic quality of matter that is equivalent for both gravity and
inertia. Over time, in order to explain various phenomena in the universe, this
eventually required the adoption of the idea that there is dark matter
throughout the universe.
What is Dark Matter per Wikipedia: https://en.wikipedia.org/wiki/Dark_matter
"Dark matter is a form of matter thought to account for approximately
85% of the matter in the universe and about a quarter of its total mass-energy density or about 2.241Ã—10−27 kg/m3.
Its presence is implied in a variety of astrophysical observations, including gravitational effects that cannot be explained by accepted theories of gravity unless more matter is present than can be seen."
But now there is evidence that dark matter might not exist
and various phenomena in the universe might be explainable as coming from an
"external field effect". This possibility was put forth by Mordehai
Milgrom back in the 1980s and his theory is referred to as "Modified Newtonian
Dynamics" (MOND), or "modified gravity". So now there is published evidence
to support Milgrom's theory. This evidence was found by "an international
group of scientists, including Case Western Reserve University Astronomy Chair
Stacy McGaugh", Reference: https://phys.org/news/2020-12-unique-gravity-dark-theory.html
What is this External Field Effect per Wikipedia: https://en.wikipedia.org/wiki/Modified_Newtonian_dynamics#The_external_field_effect
Newtonian mechanics, an object's acceleration can be found as the vector sum of
the acceleration due to each of the individual forces acting on it. This means
that a subsystem can be decoupled from the larger system in which it is embedded simply by referring the motion of its constituent particles to their centre of mass; in other words, the influence of the larger system is irrelevant for the internal dynamics of the subsystem. Since Milgrom's law is non-linear in acceleration, MONDian subsystems cannot be decoupled from their environment in this way, and in certain situations this leads to behavior with no Newtonian parallel. This is known as the "external field effect" (EFE)."
all well and good but it doesn't really explain what the external field really
is or how matter generates this field. Ernst Mach is the first person this
author knows of to propose an external field effect. Einstein called this
"Mach's Principle". What is Mach's Principle per Wikipedia: https://en.wikipedia.org/wiki/Mach's_principle
"In theoretical physics, particularly in discussions of gravitation theories, Mach's principle (or Mach's conjecture) is the name given
by Einstein to an imprecise hypothesis often credited to the physicist and philosopher Ernst Mach.
The purpose of the hypothesis was to attempt to explain how rotating objects
maintain a frame of reference, such as gyroscopes and spinning celestial
bodies. The idea is that the existence of absolute rotation (the distinction
of local inertial vs. rotating reference frames) is determined by
the large-scale distribution of matter, as exemplified by this anecdote:
You are standing in a field looking at the
stars. Your arms are resting freely at your side, and you see that the distant
stars are not moving. Now start spinning. The stars are whirling around you and
your arms are pulled away from your body. Why should your arms be pulled away
when the stars are whirling? Why should they be dangling freely when the stars
don't move? "
Since, relatively speaking, you could be still and the universe spinning around you and still cause your arms to be pulled outward, Mach's Principle implies there is some kind of interaction between local mass and distant mass that can explain this force pulling on your arms. This force of inertia might be caused by something different than what causes the force of gravity. Bob Lazar is the first person this author knows of to put forth that there are multiple forces. Lazar described what he called "gravity A" and "gravity B". A few people reading this might remember this man, Bob Lazar,
who claimed to have access to information about gravity and antigravity.
Who is Bob Lazar per Wikipedia: https://en.wikipedia.org/wiki/Bob_Lazar
Scott Lazar (/ləˈzɑːr/; born January 26, 1959) is an
theorist who claims
to have been hired in the late 1980s to reverse-engineer extraterrestrial technology at what he described as a
secret site called "S-4". Lazar alleges that this subsidiary
installation is located several kilometers south of the United
States Air Force facility popularly known as Area 51."
It is this author's contention that people, not aliens, manufactured
everything that Bob Lazar saw at Area 51 and he was unwittingly used to spread
misinformation and disinformation about technology that was really developed
right here on Earth. For example, aliens would have used a stationary phase
array transmitting antenna for the "gravity emitters". But what Bob Lazar saw
were mechanically pivoting emitters below the deck of the Sport Model. Back in
the 1980's it would have been people, not aliens, who would have used relatively primative mechanically pivoting emitters
instead of a non-moving phase array approach. Also, the Sport Model's landing
legs and entry hatch were missing from the Sport Model that Bob had access to
because people couldn't figure out how to make them look "alien" enough.
Getting back to the point: It is this author's contention there
is some truth to what Bob Lazar said about gravity A waves and gravity B waves.
He said gravity A waves are responsible for long range effects, in other words,
the inertial force that all matter experiences and he said this comes from
processes within the nuclei of atoms. This author's research confirms this is likely as explained in the videos linked to below. Gravity B waves are responsible for what
we normally call gravitational attraction thats hold people to planets and keeps
planets in solar systems, etc.. This gravitational force decreases with
distance faster than the much longer range inertial force. It is this author's
contention that these 2 forces come from 2 different but related phenomena.
This is described in detail in a 3 part video uploaded to Youtube back in 2016
called "Where Gravity Comes From, Part 1 of 3" 2 of 3 and 3 of 3.
It is the inertial force that supplies the "external force
effect" that contributes to the total forces affecting the movement of matter
in the universe. This inertial force and the gravitational force are Bob Lazar's Gravity A and Gravity B that together
explain the motions of matter in the universe without the need for dark matter.