Yes I do believe in ghosts
No I don't believe that they exist
and even before the earth formed the rocks and grit it was made from were, most likely, orbiting the sun anyway.
If you want to fire a satellite up into orbit you do need to supply energy to get it up there with a tangental instantaneous velocity.
If you want a planet to hang there in orbit around its star you don't need to supply energy, because all the force is supplied by the gravity of the system and all the motion is explicable by the conservation of angular momentum.
This is because nebulae contract, unlike a ballistic satellite launch.
Last edited by Rammjet; 25th May 2012 at 02:12 PM.
Raar!
That's not a kickstart either. The earth wasn't 'kickstarted', the reason things orbit around eachother in the universe is because as systems contract under gravity they begin to spin to conserve angular momentum*. That's not a kick start because it's not an impulse providing the force.
*just like a professional iceskater, who is spinning around with her arms held out. When she brings her arms in she will spin even faster to conserve the angular momentum she had before hand.
Sure, we can go back to the beginning of time and claim the big bang 'kick started' all this, but that would ignore the fact our universe evolved over time, and that we'd be grossly mis-representing the terms implied because the solar system didn't even exist at that point.
Last edited by Rammjet; 25th May 2012 at 02:22 PM.
Raar!
I'm not sure, that i understood that.
This is how i see it:
Without energy put into it from start:
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With energy from start:
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In the first image a large number of particles are moving randomly, otherwise than their attraction to a collective centre of mass [m] under gravity. They have a very tiny overall moment about the centre due to their random movement.
In the second image the particles have contracted towards [m] and the moment remains the same, but because it's over a smaller distance the speed increases to conserve the momentum.
In the third image individual clumps of particles have condensed into spinning planets, stars, moons. The planets stars and moons are additionally still attracted to one another, and are now in stable orbits where their instananeous tangental speeds are sufficiently large for them to orbit one another 'indefinitely'.
The idea that planets and stars exist initially and need to be pushed around one another is wrong, because the planets and stars condense from large regions of particles, so they never ever exist in a system which needs a kickstart as your diagram implied.
Last edited by Rammjet; 25th May 2012 at 03:15 PM.
Raar!
I would like to point out the sightings of these apparitions is in part the cause of an anomaly caused by a paradox. The paradox may have caused a transcendental veil to be cast on our world allowing for the viewing of what seems to be spectral phenomena to actually be a virtual image of the past projected into our eyes. This could be the likely reason behind ghosts reliving their past ordeals.
In summary, ghosts are paradoxes.
Mftopia, land of dreams. <3
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Like this? ^
Yes, I do believe in ghosts. ( I know, I know, it's silly. )
Think of it like this: A body with great mass is sitting in space. Other masses are floating about randomly, so they pass by the centre of mass with a tangental velocity.
This is how comets get caught in the orbits of stars.
Planets form from contractions in the star's acretion disk, which is already orbiting the star.
Comets and asteroids which get caught in a star or planet's orbit are an easier example for you to understand I think.
Raar!