I lately got interested again in the Hollow earth theory, and after watching a few videos and reading many comments about it, I thought I make a attempt to clear up some common misconceptions about it, as well sowing you a crude diagram I made with paint to show you how I personally would explain it, or do understand it.
Here is a puush link to the diagram:
http://puu.sh/p0zKB.pngPlease take a look at it first, before reading any further.
First misconception: There is a SUN in the inner earth.-That is not possible, that should be common sense and that for many reasons I cannot get into here, but there are many great explanations to be found on to internet. In case of a central light and heat source it would be anything else than a star. The term SUN is only used to describe what it does, since anybody knows what the sun is. It was originally never actually suggested to be a actual sun or star. I expect this core to be a crystalline structure, whish was created during the forming of earth, due to extreme pressure and heat. This core is hot /liquid inside, therefore providing heat and light. It is allays surrounded/covered by a thick layer of gasses or clouds, that block most heat and light, so it doesn't burn the inner surface. That is due to the odd gravitational property's near the centre of earth, gasses would collect and thick clouds would form there.
Second misconception: The crust is too thin to support the weight of the earth, it would collapse.-Some of the varying thicknesses whish are stated are downright ridiculous, going as low as only 10 to 50 km.
Fact is, the crust would be around 1300km or about 800 miles thick, centre of gravity being at around 400 miles. Which leads us to the next misconception.
Third misconception: The centre of gravity is in the middle of earth, or at its centre. -That is more something most people don't think about when talking about this topic than an actual misconception, but its worth mentioning. This is of cause not possible, the centre of gravity would be along the centre of the crust at around 400 miles down. The crust being about 800 thick.
That also answers the question about; if there are two large opening or holes at the poles, why do the oceans don't drain and flow into the inner earth? Its because that's not where the centre of gravity is, The waters are punched against the crust. Gravitational pull showed in the diagram. Although I should mention that in reality the hole is of cause MUCH large in diameter and the curvature is not nearly as steep. It would probably appear flat.
Another common misconception is: The earth cannot be hollow since calculations of size, gravity and mass compared to other planets don't add up!
This is actually rather simple and funny at the same time since its only common sense and logic, just like maths. If all planets and stars and hollow, and always where, the argument becomes invalid. The only thing that changes is that gravity is a bit stronger then we thought, there is just a bit less mass.
Imagine you are weighting cars that drive by. You now make a assumption of the volume or amount of stuff in the trunk of the car. It tuned our that all cars only have a single small thing in the trunk, whish is otherwise empty. That dosan't mean that your calculations where wrong, just that this little thing weighted more the expected, it has unexpected properties. It is therefore respectively simple to adjust your assumptions or theory's.
This topic is not so much to argue with you about the existence of a hollow earth, I only wanted to share my opinion and thoughts on it. Feel free to use the diagram of any of this if you want, you don't have to credit me if you don't want, in the end is only a bit of research and common sense.