The expansion theory

[Teej]

Posted this at para, now I wanna see what you guys think of it.

A friend of mine and I were talking and he came up with an interesting theory. I'm not sure if he read it online or if he came up with it, but he called it "The Expansion Theory."

He told me to imagine that everything in the universe is expanding at the same rate. So as I'm typing this, the keyboard, the monitor, and myself are all expanding at the same rate. We wouldn't realize it because it's all proportional.

If this were true, then it would disprove gravity. If I jump, it's not gravity that pulls be back to the earth, it's the earth expanding and catching up to my body. I was thinking about this after we stopped discussing it and thought it was a clever idea but not very likely to be true. But I decided I'd share it with you guys and see if it makes sense or if my friend and I are just crazy.

Note: This theory is not the same as the other expansion theory, that the Universe is spreading out and that we are becoming more and more separated from other solar systems.

[Nemesis]

Problem with this theory is that you never can prove it, because all we measure is based on physical subjects (i.e., 1 metre is the distance light travels in 1/xxxx sec in a vacuum)..
If that would expand (read; that as 'light'), we wouldnt have a referencepoint, because the referencepoint itself is also expanded.

In other words; everything could expand, but it could also shrink.. we'll never know.

[Teej]

Very true. The only way you could tell is if you were watching the Universe from above and if you yourself were not expanding, which is impossible if everything else is expanding. Still an interesting thought, though.

[Nemesis]

Well its funny to know its entirely fictive..

[Nicodemus]

Actually it is not possible and it is possible to disprove..

If you Drop a ball from the top of a building it falls. If when you do this you also throw a ball up, the earth expanding would make it seem as if you had never actually threw it. This is your threory and that is where it is incorrect.
Also when this is happening the other ball is falling downward. Both balls would be traveling in different dirrections yet if both expanded with us and the land around us as well as everything itself, then we would still have gravity because then the earth itself would expand. In turn so would the gravitational pull that we feel although the universe itself would then need also to expand. If not then the gravitational pull would increace until eventually we were the center of the universe itself.

[electra]

It makes sense but that gravity thing is a lil` confusing.I mean if when you jump the earth expands woudn't you expand with it if its all proportional ? and you're forgetting that there's gravity not only on earth...like the gravity of the sun that makes all the planets rotate around it.

[Teej]

Guys, I think you're getting the wrong idea. I don't believe this really happens and I don't believe it ever could. I just think it's fun to think about.