Hollow planets

Kao, Is there any other way to get any data about the interior of the planet? The data is good but the way it is interpreted needs a lot of work. The two types of waves are supposed to have very different ways of moving through the Earth and I wonder how this is known. Then there is the fact that the wave type that does not traval through a liquid appears to do so in the model. It is quite a fine mess. Some day someone will get around to fixing this detail.

Unobtanium doesn't melt in the Earth's core! I saw it in a movie

While there may be some support for the idea of hollow planets(I think PhilJ has basically ripped the theory a new one though), involving UFOs, conspiracy theories, and crazy polar explorers in the whole proposal only hurts the argument, not helps. Well, unless you're teaching at an insane assylum anyway....

"Regret can only change the future" -Me

I used to build speakers for a living and never once noticed bass to be truly omnidirectional. It's only the PERCEPTION of omnidirectional that matters in bass reproduction. I absolutely assure you that most people can go into a club and tell you precisely where the subwoofer is, even a deaf person could(this has been done by the way) find the source of the bass by the feel of it's waves. The waves are just so long that in an areas smaller than the length of the wave, it becomes difficult to distinguish it's source. It's all about the tools you have to detect it with, and the human ear is not very sophisticated in some regards, that being one of them.

"Regret can only change the future" -Me