FROM THE ANCIENTS TO
NEWTON
THE UNIVERSE
Part 11
By Michael Johnathan McDonald.
Michael Johnathan McDonald, April & May 2006,
U.C. Berkeley, History 181A., Spring 2006.
The Calculations of the Speed of Light, as
understood in the17th Century.
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For Huygens, Descartes treatment of light was the worst of
the worst. 'Light must be a motion, because fire is a
motion', he thought. He thought how does light come to our
eyes? The balls of light would collide in our eyes making
everything fuzzy , he thought, 'Light must become kind of
wave, ' he concluded. He states that light is a pulse
(correct) and it has a vibration. One of his experiments
involves metal balls hanging together and the ends are swung
and the as the ball's on the end smash into a line of balls
( the locus of eather - must have subtle matter to
propagate) the other end swings upward and repeats the
process and the middle balls vibrate - this showed that
light was not a indefinite velocity because the atoms
(balls) would interfere with each other. This was an
experiment on subtle matter and a demonstration on
refraction. The double refraction is what he shows for the
progressive motion of light. Light continues, says
Descartes, but Huygens had a tip from the University of
Paris where people were conducting viewings to see if light
travels great distances; does it have a terminus? " We just
proved it at the academy that light takes time to move,"
Huygens says. The questions people were now asking was: " If
light was always everywhere then what makes a shadow?" The
concept of the speed of light was born. To prove this the
Moon and satellites of Jupiter were studied with
observations of progressive motions. They looked at the
shadow of the Moon or Satellite and kept time and then
waited to the Earth moved to another position around the the
Sun to take another observation. This was done to prove
light was not an infinite velocity. Once there was the two
positions of the Earth recorded with the observations then
they were calculated together to see if distance equaled
time for both positions looking for the constant and
measuring against it.
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René
Descartes Universe
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René Descartes
Universe.
The Cartesian Universe dies because it cannot show
vortices with Kepler's laws.
Descartes only cared about the cause of gravity, Newton
decided he couldn't care less, because God made it, as noted
the ancients from his investigations of history and the
Bible. All Newton did was measure its affects on bodies.
Historians say that Newton gave up on the theory (the cause)
of gravity and focused on the more important Kepler laws.
Kelper's laws were not universally accepted after his death,
it took people as astute as Newton to prove to us they were
in fact significant. |
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Mapping France,
Cartesians say Earth is flat at the equator.
Newton understanding water made up the Earth, apparently
this is a part of his Biblical investigations, he says that
Earth is flatter at the poles and the Earth in the middle
budges because of the water. Well the French solve it.
|
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Stabilizing the clock, The Pendulum & Tides
The annual motions combined to spin. V+v
→ V-v Diurnal. |
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