115. Gravity does not exist

"The existing laws of density and buoyancy perfectly explained the physics of falling objects long before knighted Freemason “Sir” Isaac Newton bestowed his theory of “gravity” upon the world.  It is a fact that objects placed in denser mediums rise up while objects placed in less dense mediums sink down. To fit with the heliocentric model which has no up or down, Newton instead claimed objects are attracted to large masses and fall towards the center. Not a single experiment in history, however, has shown an object massive enough to, by virtue of its mass alone, cause other smaller masses to be attracted to it as Newton claims “gravity” does with Earth, the Sun, Moon, Stars and Planets."

Another blatant lie from Dubay

“Not a Not a single experiment in history, however, has shown an object massive enough to, by virtue of its mass alone, cause other smaller masses to be attracted to it”

Following links show ordinary people using the Cavendish experiment to show gravitational attraction between two objects.  Flat earthers will just say it is fake, but this experiment is so simple you can do it yourself.  Anyone who disbelieves these videos and does not try the experiment for themselves can’t call themselves a truth seeker and have exposed themselves as a truth denier.

https://www.insidescience.org/blog/2015/02/06/measuring-earth-wire

Since we can so easily prove the existence of gravity there is no need to address Dubay’s buoyancy nonsense, but that is addressed below.

Better than experiments are predictions.  In 1846, the planet Neptune was discovered after its existence was predicted because of discrepancies between calculations and data for the planet Uranus. Astronomers found the new planet almost exactly at the position predicted by the calculations of Leverrier (Adams had also calculated the position independently).

https://en.wikipedia.org/wiki/Discovery_of_Neptune

objects placed in denser mediums rise up while objects placed in less dense mediums sink down

Buoyancy as a replacement for Gravity - "... objects placed in denser mediums rise up while objects placed in less dense mediums sink down ..."

This is not how Buoyancy works!  Dubay and his fellow gravity denying flat earthers once again show how little they understand.

The laws of motion dictate that objects will remain stationary unless a force is acting upon them.  With this statement flat earthers have not explained what the force is that moves the objects up or down.

Below I explain how buoyancy actually works ... i.e. how the forces are generated that create buoyancy which I hope will help you to understand why the buoyancy theory of gravity is nonsense.

A floating ball

Let us first consider a buoyancy situation familiar to everyone, a ball floating on water.

The density of the water is greater than air above.  This means that the water exerts more force on the ball.

This results in an upward force being exerted on the ball.  This upward force will want to move the ball upward out of the water.

So why doesn't the ball float upward until it is resting completely above the water like in the diagram to the left?





The reason of course is that there is a downward force that counteracts the upward force.  This force is gravity.  The more dense the ball is, the more mass it has, and the more downward force is exerted by gravity.  I.e. The more dense the ball is, the heavier it is, and the deeper it will sit in the water.  If the ball is denser than the water its mass will be great enough that it will sink.

This is how buoyancy works.  Note that it requires gravity to work!  without gravity, objects would sit on-top of the water as shown.

A Helium balloon

It may not be obvious, but the situation with a Helium balloon is exactly the same.  Air pressure increases the closer to the ground you are because when you are closer to the ground there is more air pressing down from above.

While not as extreme as the situation with the floating ball, the air pressure under the balloon is ever so slightly higher than the air pressure above.  The results in a very small upward force.  As long as the density of the balloon is low enough so that the force exerted by gravity is less than the small upward force caused by the pressure difference, the balloon will rise.

Because the upward force is so small, it does not take much mass for an object to be too heavy to rise and fall instead.  This is why even extremely light objects such as a piece of cotton wool will fall.

Thought experiment - Gravity in a vacuum chamber

Imagine a ball sitting in a vacuum chamber.  In a vacuum there is no air pressure to act on the ball.  If we imagine the ball being released in the middle of the vacuum chamber, which direction does it move it?

Every direction is less dense than the ball to an equal degree, so which direction does it "choose" and why?

It reality of course, the ball will fall towards the ground, so there must be some force acting on the ball to move it towards the ground.

Flat earthers have no answer for this but science does.  It is gravity.


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