There is alot of tree roots where i have to dig to get to pipe. I have been told the easiest way to fix this problem is with a compression pipe and fittings
If you're going for style, then get whatever. If you're truly looking for sound quality, try a different brand, like Sennheiser. AiAiAi makes wonderful headphones that are actually worth your money, and are quite slim and fashionable.
Warping space-time is just one explanation. You can also explain gravity the same way you explain the other forcesit's a force with a moderating particle. Gravity's force-carrier (the graviton) is just a little different from that of the electromagnetic force (the photon). It has a spin of 2, which, when you work out the details, is what makes gravity only attractive. Physicists don't model ANY forces as force-at-a-distance. The effects of a gravitational field propagate from the source (a mass) at a finite speed (light speed) just as electromagnetic forces do. This means there are probably gravitational waves, which some astronomers are busy trying to detect. In any case, don't take the models too seriously. The bowling ball thing is just an image, and you've recognized that it has some shortcomings. The point is that if you want to, you can model gravity as a warping of space-time and postulate that objects travel in straight geodesic lines that appear curved to us. It's all just a trick. It can be used to help us calculate the effects of gravity on objects, so it is a very useful trick. But you really shouldn't read too much into it. EDIT: So the mass of the earth warps the space/time around it. So the geodesic (straight line in curved space) that your body would naturally follow (absent any forces other than gravity) would be that of an object falling into the earth. But the ground exerts a normal force on you that keeps you in place instead of falling down the geodesic path.
